• About PolymerFEM.com

    by
    Jorgen
    History
    The PolymerFEM web site was created by Dr. Jorgen Bergstrom in March 2002.

    Background
    This site is an independent forum for discussing constitutive models for polymers and their implementation in general purpose finite element programs. What you will find here are general information about material behavior, useful constitutive models, and numerical implementations. The goal of this site is to become a useful reference for constitutive models for polymers. Researchers and users are encouraged to submit results and to request information.

  • Recent Forum Posts

    shriisall

    Shift Functions and Reduced Time

    Hi, .

    For thermorehelogically simple materials in viscoelasticity, we know that the use of shift functions to calculate relaxation times (tau) at different temperatures

    tau(T) = tau(Tref)A(T) ...

    shriisall 2010-09-07 14:31 Go to last post
    moslempayandeh

    Fortran 11 to Abaqus 6.10

    Dear

    I have problem with Abaqus 6.10 and fortran 11,0,6 on WIN 7 x64 platform

    When I run Abaqus verification it passes all C++ Fortran requirement but when it checks for subroutine for...

    moslempayandeh 2010-09-07 08:21 Go to last post
    dundar

    thanks for answering and clearing me about...

    thanks for answering and clearing me about negative parameters.
    i guess i've found the problem. the stress curve i obtain from my abaqus model is always decelerating regardless of the material model...

    dundar 2010-09-07 04:57 Go to last post
    yaojiang

    negative parameters may indicat that the strain...

    negative parameters may indicat that the strain energy density function is not stable for certain loading condition, although they may be fine for your experimental conditions.
    although I though my...

    yaojiang 2010-09-06 17:44 Go to last post
    joe_peng

    Hi Jorgen, Thanks for your experiment data, i...

    Hi Jorgen,

    Thanks for your experiment data, i searched it for quite long time on internet,
    Ii am using Ansys to simulate some rubber key behavior, do you have the material spec of NR with 55 pph...

    joe_peng 2010-09-06 08:18 Go to last post

  • Recent Blog Posts

    Jorgen

    linking error

    The line with the text "disk full" indicates that your hard drive is full!
    Please next time ask your question on the forums page instead.

    -Jorgen

    Jorgen 2010-08-10 18:03 Go to last post
    Jorgen

    Incorporation of Huemer model in abaqus CAE using subroutine

    I recommend that read about user-frictional subroutines in Abaqus.

    Also, please post your question on the Forums page instead.

    -Jorgen

    Jorgen 2010-08-20 23:51 Go to last post
    saeed

    Modal analysis of aluminum foam in ANSYS

    Dear Jorgen,
    I posted my question on Forums page again on date 2010-06-28 03:46 as suggested by you, but still did not recieved any answer from your side. I am waiting for your suggetions.

    saeed 2010-04-22 07:23 Go to last post