Why do polymers have rate-dependent behavior?
How can you capture this behavior with modern test methods?
What models are available in FE codes, and how can I find the parameters for my test data?
Modern solid mechanics FE codes have built-in, advanced material models that can capture the complex behavior of polymers, including rate-dependent yield, plasticity, creep, stress-relaxation, and anisotropy. Designing your part without taking these into account can lead to extra iterations in the design cycle, field failures, or overdesign, resulting in greater financial manufacturing costs.
Using advanced, modern test methods can enable simulation and test engineers to capture all these complex material effects, but measuring the mechanical behavior is the first step. Using your data to select and calibrate a material model will enable engineers to predict potential failures earlier in the design.
On this four-session online course, you’ll learn how to design a test plan, how to capture the test plan, and then calibrate your material model. You’ll then see the power of these models in your simulations to enable more accurate FE simulations. We’ll cover the behavior of all polymers, including elastomers, TPEs/TPVs/TPUs, thermoplastic and thermosets, fluoropolymers, adhesives, and composites. We’ll discuss hyperelastic material models, linear and non-linear viscoelastic models, and non-linear viscoplastic material models, including when to use each one.
Anyone with some experience in FE modeling and some knowledge of polymers.
Experience with a solid mechanics FE program will help, though examples will be code-independent. Prior knowledge of material models will help as well. No experience with material testing is required.
The key takeaways from this class are:
Travel and training budgets are always tight! The e-Learning course has been developed to help you meet your training needs.
If your company has a group of engineers or specific training requirements across any subjects, please contact us to discuss options.
FEAap13 | Conduct validation studies in support of FEA |
FEAsy8 | Prepare a validation plan in support of a FEA study |
MASkn1 | Identify the materials commonly used in your industry sector and indicate which properties led to their use. |
MASkn2 | List material failure and damage mechanisms with cause and effect statements, for materials commonly used in your industry sector. |
MASkn3 | Identify those material properties commonly used in analysis and simulation within your organisation. |
MASkn4 | List any material temperature limits (high and low) specified for the materials commonly used in your industry sector. |
MASco2 | Explain the terms Isotropic, Orthotropic, Anisotropic and Homogeneous. |
MASco5 | Discuss the general issue of scatter in material properties relevant to your analysis and simulation and how this is allowed for. |
MASco7 | Describe the following constitutive behaviour for materials relevant to your industry sector: elastic- perfectly plastic, hyperelastic, viscoelastic, viscoplastic. |
MASco10 | Discuss situations where knowledge of material data is falling behind analysis capability. |
MASco11 | Discuss the terms kinematic hardening, isotropic hardening, Bauschinger effect, hysteresis loop. |
MASco14 | Discuss the general characteristics of thermoplastics, thermo-setting plastics and elastomers. |
MASco15 | If relevant to your industry sector, explain how use of a modulus and allowable stress can be used in a small displacement linear elastic analysis of a plastic component. |
MASco18 | Describe the effects of strain rate (if any) on the behaviour of materials used in products within your organisation. |
MASco24 | Describe how different classes of materials behave under stress. |
MASap1 | Employ material constitutive data appropriately in analysis and simulation. |
MASan1 | Compare test results and simulation to check that the material model chosen is consistent with the actual material behaviour |
MASsy1 | Specify appropriate material properties and constitutive laws for models, which are consistent with the materials being used in the environment being modelled and at the load levels specified. |
MASev1 | Assess the significance of simplifying material behaviour on the objectives of analyses. |
PLASap1 | Define elastic perfectly plastic and bi-linear or multi-linear hardening constitutive data as appropriate. |
PLASap7 | Using standard material data, derive a true stress vs true strain curve to be used for nonlinear analysis. |
CTDkn4 | List the range of creep and time-dependent constitutive models available in any finite element used. |
CTDkn6 | State the basic definitions of stress relaxation and creep. |
CTDco10 | Discuss the complexities arising from a multiaxial stress state and illustrate how these are normally handled. |
CTDap1 | Define creep constitutive data as appropriate. |
Event Type | eLearning |
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Member Price | £330.59 | $414.00 | €398.47 |
Non-member Price | £488.69 | $612.00 | €589.03 |
Tutor: | Sean Teller |
Start Date | End Date | Location | |
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Session Times | | Online | |
Session Times | | Online | |
*it is your individual responsibility to check whether these e-learning courses satisfy the criteria set-out by your state engineering board. NAFEMS does not guarantee that your individual board will accept these courses for PDH credit, but we believe that the courses comply with regulations in most us states (except Florida, North Carolina, Louisiana, and New York, where providors are required to be pre-approved)
Just as with a live face-to-face training course, each registration only covers one person. If you plan to register more than one person, please send an email to e-learning @ nafems.org in advance for group discounts. For NAFEMS cancellation and transfer policy, click here.
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