• Jorgen

    Calibration of a material that softens after yield 

    by
    Jorgen
    Published on 2012-03-04 22:34

    Some polymers (e.g. thermoplastics, adhesives) exhibit a reduction in stress after yielding. This behavior can be difficult to capture using a simple material model. This presentation illustrates how MCalibration can be used to create and calibrate a material model (the PNM) from the PolyUMod library that can predict a significant reduction in stress after yield.

    MCalibration: How to run a parametric study 

    by
    Jorgen
    Published on 2012-03-04 19:17

    When working with an Abaqus, ANSYS, or PolyUMod material model is can be very useful to examine which of the material parameters are most important, and how each material parameter influences the predicted stress-strain response. These tasks are easy to perform using a parametric study in MCalibration. This document illustrated how it can be performed.

    MCalibration: How to calibrate any Abaqus material model 

    by
    Jorgen
    Published on 2012-03-01 13:28

    This tutorial illustrates how MCalibration can be used to calibrate any of the built-in material models in Abaqus. The approach is based on the "Abaqus-Template" material model framework that is available in MCalibration.

    MCalibration: How to activate a failure model 

    by
    Jorgen
    Published on 2012-03-01 10:08

    This tutorial shows how to activate a failure model with any of the PolyUMod material models. The attached pdf-file and MCalibration files contain all the details. Using a failure model allows for element deletion in Abaqus/Explicit once a critical stress or strain condition is reached.

    Advanced Finite Element Modeling of Solid Polymers - May 2012 

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    *EST = Eastern Standard Time (Boston time)

    This course is presented in two lecture ...
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    Experimental Testing and Finite Element Modeling of Solid Polymers - April 2012 

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    • Do you perform FEA of polymer components but don't know the tradeoffs, pitfalls, and benefits of different constitutive
    ...
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    Polymer Classes 2012 

    by
    Jorgen
    Published on 2012-01-08 21:53

    The schedule for our 2012 training classes is now available. The classes cover the following topics: polymer mechanics, experimental testing, material model selection, and advanced finite element modeling techniques.
    The next class is on May 8 - 9, 2012. Register now while space is still available.

    Both online (web-based) and in-person (classroom-style) training classes are available. The training classes are targeted to people with an interest in learning the state of the art in testing and analyzing the mechanical performance of parts made from plastics, rubbers, thermosets, or other types of polymers.

    Finite Element Modeling of Solid Polymers - Part 1 - Feb 2012 

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    *EST = Eastern Standard Time (Boston time)

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    Polymer Modeling Training Classes 2012 


    Veryst Engineering offers both online (web-based) and in-person (classroom-style) training classes covering the following topics: polymer mechanics, experimental testing, material model selection, and advanced finite element modeling techniques. The training classes are targeted to people with an interest in learning the state of the art in experimental testing and finite element modeling of parts made from plastics, rubbers, thermosets, or other types of polymers.

    All classes include theory review and hands-on exercises. The online (web-based) classes can be taken directly from your office, and are made interactive using online exercises and by participating by phone or headset with a microphone. The in-person (classroom-style) training classes are given in our offices in Needham, MA, USA.

    The classes are given by Dr. Jorgen Bergstrom.

    The following classes are offered in 2012:

    February 15 - 16, 2012 Finite Element Modeling of Solid Polymers (Part 1)

    This is the original training class that we have been giving for a number of years. It provides a great introduction to a large number of topics.    		 Web-based
    April 3 - 4, 2012 Experimental Testing and Finite Element Modeling of Solid Polymers

    This is a hands-on class that combines: experimental testing of elastomers and thermoplastics, selection and calibration of a suitable material model, and incorporation of the calibrated material model into different FE programs. The experiments will be performed in the same lab as the class.    		 In-person
    May 8 - 9, 2012 Advanced Finite Element Modeling of Solid Polymers (Part 2)

    This class is an extension of the original Part 1 class, and covers in more depth the theory of different material models, and hands-on exercises designed to teach how to use the different models to solve real problems.    		 Web-based
    September 12, 2012 Failure Predictions of Rubbers and Thermoplastics using FEA

    Predicting failure of different polymers can be difficult due to material non-linearities and sensitivity to the load environment. In this class we will discuss different techniques that can be used to predict both brittle and ductile failure, including fatigue, of different types of polymers.    		 Web-based
    October 16 - 17, 2012 Finite Element Modeling of Solid Polymers (Part 1)

    This is the original training class that we have been giving for a number of years. It provides a great introduction to a large number of topics.    		 Web-based
    November 27 - 28, 2012 High-Strain Rate Testing and Modeling of Solid Polymers

    Foams, elastomers, and other polymers are often exposed to high-strain rates and impact events. Due to the strain-rate dependence of these materials it is important to have accurate experimental data in order to select and calibrate a suitable material model. In this class we will demonstrate the use of split Hopkinson-bar tests and traditional uniaxial tests, and also provide hands-on excersices for how to use the experimental data to calibrate suitable material models. All experiments will be performed in the same lab as the class.    		 In-person

    We also give company-specific training classes. These classes can be targeted to the specific needs of a company, and are typically given in-person at the company location. Contact Dr. Jorgen Bergstrom for more info.

    REGISTRATION INFORMATION
    To register to any of the classes, please send an email to seminars@veryst.com containing the following:
    • Your name
    • Name and date of the class you want to register for

    We will then respond with payment information, etc.

    The fee for the two-day web-based classes is: $550.
    The fee for the one-day web-based classes is: $275.
    The fee for the two-day in-person classes is: $1600.

    Please register at least two weeks before the start of the class. Registrations the last week before the class are subject to a 10% surcharge.
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