Faezeh Iranmanesh

14 Questions 11 Answers 0 Followers

Questions related from Faezeh Iranmanesh

What should I do to solve this problem with my UMAT?

Hello everybody, I've written a UMAT code that runs perfectly for single element models. When I try to apply it to multi-element models and more complex geometries, I see that some parameters...

28 October 2021 1,867 1 View

How to solve UMAT multi-element problem?

Hello All, I have written a UMAT code to predict the anisotropic elastoplastic behavior of a material (with damage). I have applied this UMAT to a single quad element and it works as predicted. It...

17 September 2021 4,202 1 View

How to identify a constitutive model parameters using AI/machine learning?

Hello everybody, I was wondering to ask you to share with me the works that used AI/machine learning for determining the parameters of a constitutive model. Thanks. regards, Faezeh

30 May 2021 4,058 2 View

What is the problem with my UMAT(my stress and state variables are not carried to the next increment correctly)?

Hello everybody, I've implemented a UMAT subroutine and I debugged it for one plastic increment. There is a problem that when one increment ends, and the stress and all state variables are saved...

20 May 2021 901 4 View

Why do my parameters (including matrices) keep changing in a Fortran subroutine (UMAT subroutine)?

I am debugging my Fortran code for my UMAT subroutine, and I noticed that some of my parameters keep changing throughout a subroutine which is strange to me. For example I have the following...

27 April 2021 5,455 6 View

How should I implement a load-unload test case using a UMAT in Abaqus?

Hello, I have generated a UMAT code and I wanted to test it for a single load-unload test. To do so, is it enough to create a load-unload FEM model in Abaqus and implement the UMAT for it or I...

22 April 2021 7,669 1 View

How to incorporate a variable in damage model?

I would like to use CDM (continuum damage mechanics) for modeling damage in my constitutive model and I need to incorporate a variable (or its effects) into my mechanical damage that doesn't...

16 December 2020 7,454 2 View

Mathematical or computational modelling of protein oxidation?

I am looking for a research paper about the mathematical or computational modelling of protein oxidation (caused by reactive oxygen species).. I would really appreciate that if someone helps me...

18 November 2020 2,487 3 View

Can FEM model learn from experimental results?

I am looking for a research in which the finite element model was trained based on experimental results.

03 October 2020 9,458 19 View

Is it possible to do a baseline correction for a DSC test without having the empty pan line?

Hello all, I have some old DSC data from long time ago. I need to do baseline correction for them but I don't have empty pan line for these data. I found out that for baseline correction, before...

29 June 2020 6,924 0 View

Why does stresses evolve in only one element in Abaqus explicit?

I am trying to run my VUMAT code with a model in Abaqus/explicit. After that the run has been completed, I observed that the stresses have been evolved in only one element as shown in the attached...

28 May 2020 5,610 3 View

How to do baseline correction for DSC test data?

I have some raw DSC test data and I need to do baseline correction. I don't know how should I do it. I would appreciate it if someone can help me with this.

17 May 2020 8,637 7 View

Problem with nonlinear curve fitting?

Hello all, Actually, I am dealing with an issue that I can't get desirable results out of my curve-fitting problem. I used lsqcurvefit in the first place. Then, I added MultiStart to my code as...

01 May 2020 5,049 2 View

How to plot multiple datasets onto one figure in curve fitting toolbox?

Hi everybody I'm using curve fitting tool of MATLAB for fitting a curve to my x-y data.I want to plot multiple data sets ((x1,y1),(x2,y2),(x3,y3),....) onto one figure after fitting a curve to...

17 July 2016 4,709 3 View