Modelling moving discontinuity using XFEM
Greeting to all iMechanicians, I am trying to model motion of discontinuity (grain boundary) using XFEM as it saves me from the computational expense required for mesh adaptation. The material...
View ArticleProblem with Abaqus and Umeshmotion
Hi, I am currently trying to simulate the wear of a damper within a gas turbine using Abaqus 6.9 and the user-subroutine Umeshmotion. I have managed to get the subroutine to compile correctly but...
View ArticleI need some guidance on writing USDFLD subroutine on Abaqus
Hey everyone, I'm very new on Abaqus, and what I'm trying to do is to assign to a model a changing E modulo as a linear function of Z coordinate ( E(Z)=-33936.651*Z+25e06 ). I tried to gather some...
View ArticleSubroutine simulation migration from HETVAL to UMATH
Hi!I'm already simulating a shape memory alloy behavior with the aid of the HETVAL subroutine, but I'd like to use UMATHT instead, since the HETVAL can't simulate correctly heat absortion(cooling...
View ArticleSimple metal cutting example with chip formation in ABAQUS
Hello every one....I am new in abaqus/cae, abaqus/explicit. I have googled but not able to get any tutorial or example for metal cutting with chip formation. just few youtube animation videos are...
View ArticleFROTRAN subrountines for ABAQUS in bone remodeling simulation
I'm new in the computer simulation of adaptive bone remodeling (Bone will adapt to the loads it is placed under). And I know many research cases of numerical model were implemented as FROTRAN...
View ArticleFROTRAN subrountines for ABAQUS in bone remodeling simulation
I'm new in the computer simulation of adaptive bone remodeling (Bone will adapt to the loads it is placed under). And I know many research cases of numerical model were implemented as FROTRAN...
View ArticleHow to learn user subroutines in ABAQUS by FORTRAN?
I'm a freshman in biomechanic and apply to learn user subroutines in ABAQUS by FORTRAN. I have installed the ABAQUS 6.11, VS2008 and IVF 11.1. But I don't know how to call the subroutines in ABAQUS,...
View ArticleABAQUS UEL SUBROUTINE_Abnormal termination signal_Signal 6
Dear valuable members,Thanks for the kind help in advance.I would submit a well known error that I got in my run of the UEL subroutine which has additional dof. the error is:Abaqus Error: The...
View ArticleHow to export NODAL DISPLACEMENT in a UAMP subroutine in ABAQUS?
DEAR ALL, I am a new user in ABAQUS. I want to do an analysis on a cantilever beam, where force applied to the beam deforms it, and depending on its deformation the direction of the force changes....
View ArticleAbout Dflux of abaqus
I would like to use Dflux to give a Temperature and dT/dt related heat flux. Can Dflux be used for this purpose? I am not sure how to get dT/dt ? Or other subroutine can fulfill this purpose? Thank...
View ArticleA Very silly abaqus question... applying a wind load
Dear All, Sorry to ask such a silly question but I am quite new to Abaqus... I am trying to model a tower exposed to wind. I know how the wind pressure varies according to height, but what I dont know...
View ArticleAbaqus "system error code 884"
Hello again Im running a simulation on Abaqus and i got the next text message: Abaqus Error: The executable C:\SIMULIA\Abaqus\6.11-PR3\exec\standard.exe aborted with system error code 884....
View ArticleHow to use USDFLD request variables from other elements in ABAQUS
Hi all, I want to use USDFLD to have diffusion and mechanical coupling analysis. The model is building a cohesive zone between two parts. Before the calculation is executed in each increment, I need...
View ArticleUMAT input DROT not identity even with local direction
Hello, While debuggin my UMAT code for Fung material for Simple shear mode I saw that UMAT is receiving a DROT matrix as input that is not identity. Since I have specified *orientation as show...
View ArticleWriting User Subroutines with ABAQUS
Dear All, I think that many students are looking for some tutorials about writing a UMAT in ABAQUS.You can find a comprehensive tutorial for elastic problems.This file contains: • Motivation• Steps...
View ArticleNon-uniform expansion coefficient alpha in UEXPAN (ABAQUS)
I want to define the expansion coefficient alpha as a function of the depth, alpha(z)=f(z). How can I achieve this in UEXPAN? I cannot find a way to incorporate coordinates in UEXPAN.
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material points will change while using subroutine in ABAQUS
This subroutine using VUSDFLD is to determine position of damage and provide evolution of damage surface, when some elements failed. The “outer” damage status will transfer to “inner” damage status....
View ArticleCalling a File inside of the UEL
Hi everybody, I'm writing a User Difined Element (UEL) for my research. Would you please let me know if it's possible to call a file (txt, dat, etc) inside of the UEL or not? Example: IF...
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