Mojtaba Khaleghi

4 Questions 10 Answers 0 Followers

Questions related from Mojtaba Khaleghi

What is the difference between creep in viscoelastic materials and creep in metals?

Hi In metal forming we have creep for rate dependent plasticity. We have creep in visco-elastisity too. What is the difference between these creeps?

09 March 2015 6,250 9 View

How to define a strain rate dependent pressure amplitude in Abaqus?

Hi all docs and engineersI'm modeling inflation of a polymer sheet under a constant pressure load. i wrote UMAT for viscoelastic behavior of the polymeric sheet. My constitutive equation holds for...

05 March 2015 3,536 4 View

In UAMP subroutine how can I specify props in abaqus CAE?

Hi researchers In UAMP there are props variables like UMAT subroutine but i don't know how to specify constants in abaqus cae like UMAT. in UMAT you specify props in property module but where...

22 February 2015 962 5 View

How can I define strain rate dependent parameters in UMAT for shell element?

Hi friends I'm writing a user subroutine for a viscoelastic material and material parameters are depend on shear strain rate. I use DSTRAN(3)/DTIME to relate parameters to the shear strain rate in...

17 February 2015 915 2 View