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Simuleon provides software, training and consulting services in Computer Aided Engineering and carries out product simulation using Finite Element Analysis and Multiphysics.
Simuleon helps you, developing your products “first time right” !
SIMULIA ABAQUS Reseller
Simuleon is the reseller in Benelux, for the Dassault Systemes SIMULIA product range, which includes:
• Abaqus, High End FEA Software
• Isight, Simulation Automation Software
• Tosca, Topology Optimisation
• FE-Safe, Advanced Fatigue Simulation
• 3DEXPERIENCE Platform
Simuleon provides these products along with the associated training and implementation. SIMULIA covers a vast range of different analysis types using implicit and explicit solver technologies, including linear, non-linear, buckling, thermal and computational fluid dynamics (CFD). Their simulation expertise and training allows you to maximize your return on investment made in simulation software by making it an intrinsic part of the design process.
High-End FEA Consulting
A central part of Simuleon B.V. is their High-End Simulation Consultancy. Their dedicated team of simulation experts use finite element analysis software like Abaqus & Star CCM+, for individual projects. Examples of these projects are in structural, dynamic, thermal, CFD and multiphysics. Simuleon’s consultants also develop methods to help you create and implement simulation strategies to gain real financial and technical benefits for your business.
Performance assessment of a Peristaltic PumpMay 22, 2020
In this blog post, we will be showcasing a fully coupled fluid structure interaction (FSI) analysis, of a peristaltic roller pump. This study will focus on assessing the performance of a peristaltic pump, under operation. This co-simulation analysis, will solve for both the structural and fluid domains’ unknown quantities, during 1 revolution of the rotating mechanism of the pump. Read more
Abaqus from a startup till today – A walk down memory laneMay 14, 2020
If you have an hour left during the day / evening, sit back, relax and watch this inspiring lecture, where Dr. David Hibbitt goes through the actual start-up phase of the Abaqus company until today.
Hyperelastic material models in Abaqus. When to choose what?April 24, 2020
To model the behaviour of rubbers and rubber-like materials, typically hyperelastic material models are used. A hyperelastic material is elastic: after unloading, the material returns to its original shape. The material state therefore does not depend on the history or the rate of deformation, but only on the current loading. The model is based on a strain energy potential, which is a function of the (invariants of the) current strain. Read more
Kinematic vs Distributed coupling constraints in AbaqusApril 11, 2020
In this blog post, we will be discussing the differences between the kinematic and distributing constraints in Abaqus. The differences between these types of constraints will be highlighted in an example model. Read more
Modelling a composite flanged tube including loading with Abaqus/CAEMarch 5, 2020
In this blog, we will be providing information on the modelling of laminated composites with Abaqus. Modelling will be done using the composite layup tool, and material orientations will also be assigned. Read more
6 ways in which we can help you solve your simulation challengesFebruary 11, 2020
We’ve noticed that not everyone is familiar with the different ways in which we can help you if you have a simulation challenge. In this blog post, I want to go through the different options, explain what they are, for who they are available, and how to request this type of help. Read more
Optimization of hip implant done with SIMULIA Abaqus & SIMULIA ToscaJanuary 28, 2020
Though we probably don’t always realize it, we use our hips a lot. After years of loading, they can become damaged and painful. In these cases, replacing the hip with an implant can be a solution. Here we are going to let Tosca design an optimized hip implant, as an example. Read more
Abaqus Hardening Laws on single element modelJanuary 23, 2020
In this blog post, we will be discussing about some of the most commonly used hardening laws that are available within Abaqus, and can be deployed whenever a metal’s plastic (inelastic) behavior and the nature of the applied load (monotonic, cyclic) becomes relevant in the modeling. Read more
Adding translucency for enhanced post processing in AbaqusNovember 11, 2019
In this blog post, we will be discussing about the translucency feature, that is there to help us enhance the results presentation of our fe analyses from within Abaqus Visualization. Read more
Fatigue assessment of a bicycle frame done with Abaqus and Fe-SafeOctober 8, 2019
In this blog post, we will be showcasing a fatigue assessment of a bicycle frame. This fatigue assessment will be against certain cyclic loading scenarios. Cyclic loading scenarios, typical for bicycle manufacturers, can include, pedaling forces, horizontal forces acting on the front fork and vertical load acting on the seat post. Read more
Use mesh-independent fasteners to simulate connection points in AbaqusSeptember 9, 2019
Often two (or more) parts are connected at specific points, for example by a number of screws along a line. In a simulation, the connection needs to be taken into account. Read more
Options to adapt the mesh in Abaqus: an overviewAugust 1, 2019
There are different options to adapt the mesh in Abaqus: ALE adaptive meshing, adaptive remeshing and mesh-to-mesh solution mapping. It can be difficult to keep them apart, so in this blog, I’ll give an overview of what they are and what their purpose is. I’ll start with a summary table and then go into more detail. Read more
Multiscale modelling of a concrete-steel composite using the Abaqus RVE micromechanics pluginJune 12, 2019
Many material that are used nowadays are composites: they consist of more than one material. To simulate a composite, different approaches can be taken at different length scales.
On the micro scale, a detailed model of all materials with their geometries and interaction can be made. This provides insight into the behavior of the combined material, but it can be difficult to determine boundary conditions that match realistic situations. Read more
Modeling of steel fibre-concrete composites with AbaqusMay 15, 2019
In this blog post, we will be discussing about steel fibre reinforced concrete (termed as SFRC) and will be showcasing a way (more modelling ways do exist) to model the interaction between the steel fibre (reinforcement) and the concrete (matrix). Read more
Creating an axisymmetric model from 3D geometry in AbaqusApril 25, 2019
Geometry is often drawn in 3D, also when it is axisymmetric. The analysis will be much faster when making use of the axisymmetry. In such cases, we need to get an axisymmetric cross-section out of a 3D model. In this blog I will show a way to do this with Abaqus. The main idea is to create a sketch on a cross-section of the part and project the relevant edges to this sketch. This sketch is saved and used to create a new axisymmetric part. This isn’t the only way of doing it, but at least it gives an idea. Read more
Geometry Operations in Abaqus FEA softwareMarch 6, 2019
In this blog post, we will be discussing about geometry operations on 3d models, that have been imported in Abaqus as a neutral geometry format, or via the Associative Interface (if you are interested more about the AI, have a look at an earlier blogpost). Read more
Units in AbaqusFebruary 27, 2019
In this blog, I want to discuss units in Abaqus. On one hand, I can be short on it: we can choose what we like, as long as it is consistent. On the other hand, this is a common source of mistakes. Therefore I want to go into a bit more detail. Read more
Fatigue analysis with fe-safeJanuary 12, 2019
In this post, we will be highlighting the main features of Simulia’s fatigue prediction software, fe-safe. Fe safe performs both strain and stress based fatigue calculations, incorporating many different fatigue algorithms (uniaxial strain and stress based, biaxial strain and stress based, advanced thermomechanical fatigue, elastomer fatigue, fatigue of welds etc.). Last but not least, a fatigue calculation example will be shown. This concerns a notched plate under a cyclic fully reversing (tensile-compressive) load. Read more
Abaqus 2019 – Key Features & How to DownloadDecember 12, 2018
Abaqus 2019 is now available. In this blog, we ‘ll list the most significant new features and enhancements, and explain how to obtain and install Abaqus 2019. Read more
SSA & Simuleon join Addnode PLMDecember 6, 2018
Addnode PLM division with TechniaTranscat and Intrinsys, the #1 knowledge leaders in PLM, today announced that they have acquired Strategic Simulation & Analysis Limited (SSA), a UK simulation leader based in Charlbury. SSA´s sister company, Simuleon a simulation leader based in Zaltbommel, Benelux is also part of the acquisition. Read more
Fully coupled thermal structural analysis with AbaqusNovember 1, 2018
In this post, we will be showing some of the capabilities of Abaqus for performing fully coupled thermal-structural analyses. In particular, an exemplary geometry of a mountain bike’s perforated disc together with the breaking pads (included in the caliper-not modelled) will be used to show some of Abaqus’ conjugate heat transfer and multiphysics capabilities. Read more
SIMULIA Electric Drive SimulationOctober 25, 2018
Modeling Bolted Connections with Abaqus FEASeptember 19, 2018
In this blog post, we will be discussing about the different methods in modeling bolted connections with Abaqus FEA. At the last section of the post,we will be showcasing a bolted connection, incorporating a pretensioned bolt. Flanged connections are used extensively in most engineering disciplines. They provide a way of interconnecting various (metallic, plastic etc.) components and their design is often critical for the strength of various components (e.g. bolt strength) and sealing of the assembly. Read more
4 Questions to ask when doing finite element analysis (or problem solving in general)August 31, 2018
When it is clear which question should be answered, the accuracy required tends to become more clear as well. In general a yes or no question (e.g. is the plastic limit reached under this loading?) requires less accuracy than a question that is to be answered with a value (e.g. what is the loading at which the plastic limit is reached?). Read more
Symmetric model generation with AbaqusAugust 8, 2018
In this blog post we will be discussing about the symmetric model generation feature that is incorporated in Abaqus. This feature is targeted towards reducing the solution time needed for an analysis. We will first present the supported features and limitations, followed by an exemplary analysis of a flanged connection wherein this feature can be used. Read more
Dassault Systemes Marketplace for Design & Engineering ServicesJuly 31, 2018
This promotional video is about the Dassault Systemes Marketplace. The place for Design & Engineering Services.
7 tips to help Abaqus run fasterJune 30, 2018
Maybe you recognize this: you set up your model, start running the job, open the monitor window and … it stays empty, longer than you would like. The simulation is taking longer than you hoped or expected and you wonder: “how can I do this faster (without significantly reducing the accuracy of the results)?” In this blog I’ll discuss some ideas and experience we’ve had related to simulation speed. Read more
SIMULIA Realistic Simulation for Food & Beverage PackagingJune 27, 2018
This video shows the possibilities of the Dassault Systemes 3DEXPERIENCE Platform with use of Abaqus technology to predict performance of packaging.
Abaqus Associative Interface for SOLIDWORKSJune 7, 2018
In this post, we will be highlighting the installation and use of the CAD associative interface for interconnecting Solidworks with Abaqus. By using the CAD interface, geometry modifications performed with Solidworks can be transfered in the Abaqus CAE with a push of a button without the need for manually updating previously assigned boundary conditions or interactions.
Concrete frame under earthquake loading using AbaqusMay 8, 2018
In this post, we will be demonstrating the setup of an earthquake analysis. The structure to be investigated will be a concrete frame. The earthquake input signal will have the form of an acceleration time history (lateral accelerations vs time) with a signal frequency of 100 Hz.
Simulating welding using the Abaqus Welding Interface – Part 2May 4, 2018
In a previous blog, I have shown how to model welding for a simple case with Abaqus. Here sequential thermal-structural analysis is used to apply temperatures calculated in a thermal analysis in a subsequent structural analysis. Also, the model change option is used to remove and reactivate bead material, simulating its deposit.
Welding simulation using Abaqus – Part 1April 20, 2018
Welding is a process that joins materials by causing fusion: the base metal is melted and typically a filler material is added to form a pool of molten material. When simulating the welding process in order to assess the structural behavior of a welded joint, there are two main challenges when setting up the model:
- Thermal and structural behavior needs to be coupled to each other
- Material needs to be added during the welding process. This also changes the boundaries and thus the location of the boundary conditions.
Nieuw Dassault Systemes – Simulation on the Platform R2018xApril 11, 2018
This video shows the possibilities of Simulation on the platform, powered by Abaqus Technology
Coupled Thermal-Stress Analysis and Expansion Joints in AbaqusMarch 7, 2018
In this post we will be showing an exemplary analysis with Abaqus Standard. This analysis will incorporate a coupled thermal-stress problem of a cylindrical shell (e.g. a pipe enclosing a high temperature fluid used in a factory). This pipe will be connected to a metallic expansion joint that will have the purpose of undertaking the thermal extension of the pipe. The purpose of the coupled analysis will be to demonstrate the mapping of result values via the predefined field option.
Using Abaqus for thermal analysis: steel vs silicone for baking browniesMarch 3, 2018
While Abaqus is used most for mechanical analysis, there are other options as well. Thermal analysis is one of the possibilities. In this blog, I will show how to set up such a thermal analysis using Abaqus.
Non-parametric optimization of a clap skate using Tosca TopologyFebruary 8, 2018
What do you do when you want to find a good design?
Have a brain storm session, come up with different designs, try each one out and choose the best one?
Or let the computer help you, by changing parameters such as dimensions and finding the design that matches the requirements best, possibly using Isight?
While such a parametric optimization is powerful in finding the best variation around a theme, non-parametric optimization can come up with a completely new theme: a new design concept. In this blog, we’ll take a look at non-parametric topology optimization using Tosca and Abaqus.
Xflow CFD demonstrating the Magnus effectJanuary 3, 2018
In the current post, we will be focusing on introducing XFlow CFD by demonstrating an aerodynamic effect primarily observable in spheres or cylinders following certain trajectories while spinning at the same time.
Modelling hyperelastic behavior using test data in AbaqusDecember 11, 2017
In this blog, the hyperelastic behaviour modelling in Abaqus will be discussed. This will be implemented by fitting relevant experimental data with appropriate strain potential energy functions that are built-in in Abaqus and deciding on the function that best models the rubber materials behaviour. Additionally a finite element model will be demonstrated, wherein the designated material behaviour will be show cased.
SIMULIA Xflow CFD – Rotating SprinklerOctober 21, 2017
Converting Engineering Stress-Strain to True Stress-Strain in AbaqusOctober 13, 2017
This blog focuses on the difference between Engineering Stress-Strain and True Stress-Strain. Furthermore we will explain how to convert Engineering Stress-Strain to True Stress Strain from within Abaqus. Abaqus offers many possibilities with respect to material modelling. Apart from including elastic properties, also various options are offered for modelling of plasticity. Usually for accurately modelling materials, relevant testing is conducted.
Using skins and stringers to create shell or beam reinforcements with Abaqus FEASeptember 20, 2017
A bulk material may be reinforced with a stiffer outer layer or a beam structure connected to it. In Abaqus, such layers or beams can be included by creating shells or beams that are tied to the bulk material. It is more efficient, however, to use a skin to model a shell layer, or a stringer to model a beam. With these options additional shell (skin) or beam (stringer) elements are created that share nodes with the underlying mesh. They don’t need to be meshed separately and no tie is required. Properties can be defined similar to regular shell or beam elements.
Buckling, Post-Buckling & Imperfections modelled with Abaqus FEASeptember 14, 2017
In this blog, we will describe the possibilities for Buckling and the methodology to take into account imperfections.
Buckling refers to the sudden collapse of a structural member , subjected to high axial compressive loading. This collapse takes the form of a sudden lateral deflection of the structural member. Therefore the structure’s load bearing ability is compromised under buckling. Based on the structure’s characteristics, either a consequent full collapse can occur or the structure’s load bearing capacity is restored in the post-buckled region. When the structure exhibits this sudden lateral deflection under axial compression, it is said that the buckling load has been reached. The importance of considering buckling during structural design is outlined by the fact that the buckling load is lower than the maximum load the structure can withstand under axial compression.
SIMULIA – Additive Manufacturing – Concept to ProductionAugust 11, 2017
Bolt pretensioning with use of Abaqus scriptingJuly 12, 2017
For many engineering applications, bolted connections are used extensively for holding various components together and transferring of loads among those components (e.g. bolted connections for connecting trusses, L or T-type flanges).
Modeling Grains of Complex Shapes and Particle Fragmentation using Discrete Element Method (DEM) in AbaqusMay 27, 2017
The discrete element method (DEM) in Abaqus is intended for modeling events in which large numbers of discrete particles collide with each other and with other surfaces. It is not meant for modeling deformation of a continuum but is useful for simulations involving discontinuous media such as gravel. DEM can be used together with finite elements for modeling discrete particles interacting with deformable continua or other rigid bodies.
How Abaqus treats initial overclosures of contacting surfacesApril 26, 2017
In this blog, we will explain and show the different methods Abaqus has to treat an initial overlap of contact surfaces, with an axisymmetric O-ring as example.
Modelling crack propagation using XFEMMarch 11, 2017
In a previous blog I showed how to model a stationary crack and calculate the J-integral to determine whether the crack propagates. Abaqus offers different techniques to simulate crack propagation, including surface- and element-based cohesive behaviour and the virtual crack closure technique. When using one of these methods with conventional FEM, the location of the crack needs to be prescribed beforehand. When the eXtended Finite Element Method (XFEM) is used, this is not necessary. In this case, enrichment terms are added to the normal displacement interpolation, so a crack within an element can be described. In this blog I will explain how to model crack propagation using the surface-based cohesive behaviour approach and XFEM.
Modelling a crack using AbaqusMarch 4, 2017
In many cases it is important to know whether a crack will propagate. Simulating this requires special techniques, especially for sharp cracks. In a perfectly sharp crack, loading is applied to a single point, causing a singularity with an infinitely large stress. In a simulation it is not possible to obtain an infinitely large stress. The loading will be localised in a single element and therefore the results will depend strongly on the mesh, which is unwanted. In the real world, perfectly sharp cracks do not exist; a crack will always have a finite thickness.
Topology Optimization of an Abaqus model in ToscaFebruary 22, 2017
In the current blog we will show some capabilities of one of Simulia’s extended products, Tosca. As a quick recap, based on your license you can use your tokens to run Simulia Abaqus or you can also use your licenses to run products of the extended portfolio:
Whats new in SIMULIA Abaqus 2017January 25, 2017
How to use Abaqus CEL to model air pressure?January 12, 2017
In most simulations, air and the pressure it exerts is not taken into account. There are situations thinkable, however, in which air plays an important mechanical role. An air gun is an example of this: compressed air exerts a force on a projectile, causing it to be propelled. In this blog, I will show how to model air using CEL, using a chamber in which air is compressed with a plug resting on it as an example.
5 Tips for buying FEA SoftwareJanuary 4, 2017
This blog focusses on the things that could be useful when considering using, buying or leasing Finite Element Analysis Software. These tips can be used for both future FEA users as well as managers and decision makers who are thinking about starting to use FEA Software, or think about upgrade and expand their existing FEA Software.
Material calibration using Abaqus (and Isight)November 24, 2016
When performing a finite element analysis many modelling choices must be made. One of them is the choice of material properties. This can have a big influence on the outcome of the simulation. In many cases some material properties are known, for example in a data sheet. These normally do not directly correlate to the parameters required by Abaqus. When not all the required material properties are known, experimental data must be obtained. Based on this data, a material model and material parameters must be defined.
Abaqus FSI Drop Test – 100 liter HDPE Fuel tankOctober 27, 2016
This blog shows how we performed a drop test for a Polyethylene 100 liter Fueltank containing fluid with SIMULIA Abaqus FEA Software. The goal of this analysis is to predict the possible material behaviour and failure that will lead to leakage.
This example involves a fluid-filled plastic tank falling from a height of roughly 15 meters onto a flat, rigid floor. The tank as shown in the pictures below is made of high-density polyethylene with a wall thickness of 5 mm everywhere. The tank is filled almost completely (about 90%) with water. A realistic simulation for the tank must account for both the exterior forces on the tank from the floor impact, as well as the interior forces of the water pushing against the walls of the tank. Resulting stresses and strains in the tank will be used to determine its structural feasibility.
Foam Indentation with Abaqus FEAOctober 19, 2016
This blog shows how we performed an Indentation Force Deflection (IFD) test for a Polyurethane Foam Sample, following the ASTM D 3574. The goal of this analysis is to show the Force behaviour over time during indentation.
The Geometry, Material & Boundary Conditions
Generate geometry & parts from mesh – Geostatic Analysis – Abaqus FEAOctober 13, 2016
In this blog we will focus on a problem that happens when working with input files. Not exclusively but it is often encountered when performing geostatic finite element analysis (FEA). Briefly, the problem is that the analysts work with finite element models where no geometry is available but only a mesh. Working without geometry brings an important limitation: re-meshing and therefore local refinement is not possible.
5 reasons why you should use a mid-surface shell mesh for thin-walled partsSeptember 8, 2016
It happens all the time. Too often we still see companies that trust on simulations being performed with a solid-mesh, while the geometry is thin walled, like with sheet-metal, extruded parts or plastic parts. If you ask the people why they didn’t use a shell mesh, most of the time they will tell you it will take too much time to generate a mid-surface shell model, or they think it is not feasible capturing the necessary detail in the analysis, so they decided to just ignore the rules.
From Blow Molding process to Structural Performance with Abaqus FEAJuly 15, 2016
In this blog we will focus on the capabilities of Simulia Abaqus to assist in simulating the Blow-Stretch Molding process and use those outcomes like varying wallthicknesses, axial and circumferential Strains, and local obtained material specifications to use that as a basis for a Top Load Analysis on the same plastic bottle.
Abaqus Explicit – DropTest with DEMMay 31, 2016
This video shows the behaviour of a plastic container in a droptest which contains spherical pellets modelled with Discrete Element Method (DEM).
Modelling rubber materials with AbaqusApril 23, 2016
In this blog we will focus on the capabilities of Simulia Abaqus to assist in modelling rubber like materials.
Rubber materials such as thermoplastics are largely used in the industry; to list some of the areas where these materials can be found we can mention tyre industry, consumer pack goods, medical or sealing solutions but rubbers are also present in many others engineering fields.
How to simulate Top load, Squeeze load and Crush load for plastic bottle?March 17, 2016
The geometry describes a PET bottle which can contain 0.5 l of drinkable liquid. Performing a top load analysis is important to determine the vertical stiffness of the bottle. This top load is also important to determine the vertical stack ability.
6 Tips solving non convergence with Abaqus FEAFebruary 25, 2016
Every engineer trying to solve non-linear finite element analyses has experienced it: convergence difficulties. In this blog I will give ideas for finding the cause of the convergence issues, as well as some common solutions in Abaqus FEA.
How to calculate drag coefficient for motorcycle?February 13, 2016
As with most of the projects we do within Simuleon, there is always a clear reason why customers ask us to perform a simulation. In this project it is all about setting up a simulation which determines the amount of Dragforce and the Drag Coefficient for this unique electric motorcycle.
Realistic Finite Element Analysis – What we learned the hard way?November 26, 2015
This article focuses on our experience gained in FEA consultancy, practical testing and validation. What issues did we experience and how did Simuleon address those challenges? Due to existing NDA’s and sensitivity of customer names, an anonymous case is described.
How Topology Optimization adds Innovation for 3D-Printed ProductsOctober 14, 2015
This article focuses on the possibilities for increasing innovation with Topology Optimization for Additive Manufactured Parts. Topology Optimization provides freedom to create unique structures that are a perfect fit for that given structural behaviour.
How to model coating in Abaqus?October 7, 2015
In many engineering applications the role of a coating layer is a key factor for determining its performance. The concept consists on applying a superficial cover to the substrate (ground material). Such coating is typically a few microns and will determine the distinctive characteristics of the product.
SIMULIA SIMPACK – BMW ValvetrainJuly 13, 2015
Complete inlet valve train model of 6-cylinder engine.
SIMULIA SIMPACK – Jaguar Landrover
Multibody dynamics for active ride simulations
Abaqus 2016 – Whats New Sneak PeekJune 30, 2015
Please note that the functionality as mentioned below for Abaqus 2016 is not officially confirmed or released yet. The possible improvements and enhanced functionalities were presented during the SCC 2015 in Berlin and is considered as public domain information.
How does Non-Linear Analysis increase innovation for Life Sciences & Biomechanical Engineering?May 20, 2015
This article focuses on the possibilities for increasing innovation in Non-Linear Analysis for Life sciences & Biomechanical Engineering. We will talk about the different areas of usage, their benefits and the possible pitfalls. Both Simuleon B.V. and our joint venture partner: Strategic Simulation & Analysis Limited from UK, have participated in numerous projects for the Life Sciences & Biomedical Industry.
How to ensure SAFETY during plastic deformation in VALVES?May 18, 2015
This article focuses on Finite Element Analysis for plastic or metal valves in the higher pressure range within the Valve industry, and how plastic deformation in the valve housings can be estimated on a more efficient way. Both Simuleon B.V. and our joint venture partner: Strategic Simulation & Analysis Limited from UK, have participated in projects for the Oil & Gas industry, in this case: High Pressure Valves.
What does it take to optimize your designs for best performance with the use of Finite Element Analysis?March 30, 2015
This article focuses on using optimization technologies such as topology based optimization, shape optimization and parameter-based optimization together with Finite Element Analysis software in order to optimize your designs for best performance. I will explain the differences, the benefits and the possibilities of using these techniques.
Why should you consider performing non-linear finite element analysis?March 6, 2015
In these days, everything is about innovation and a better position and marketshare then your competition. So if you work for a company which develops and produces their own products, the question raises; how do you develop an outstanding product which differentiates from competition on performance, quality, serviceability and life?
How to achieve convergence in advanced contact analysis for finite element modelling?January 20, 2015
Performing Contact Analysis can be one of the more complex non-linear finite element challenges in the daily life of a structural engineer. As we have many involvements with people performing these non-linear contact analysis for their finite element model, we notice that there are a lot of challenges which often are not addressed well because a lack of convergence and ever reducing time-steps. This is where we see a lot of trial and error approaches with the hope on a possible solution. Unfortunately many times the “hope” ends in a hugely stressful situation where you need to ask another company to do the analysis for you because you can’t seem to get it running properly.