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The input file seems OK. I have checked it on another computer. The main difference is the OS.

Probably to much deformation for elements. Check element hourglassing. Maybe some additional info i was reading the other day...

I am trying to change the rigid body orientation = the displacement is applied to the rigid body. You already accommodated the orientation. [pipe]

For example I went the Abaqus/python way... But only using python as a iterative pre and post, for .inp generation - letting Abaqus solve its thing. If I understand correctly you are trying to develope a new constitutive relationship. If the inbuild abaqus models are not sufficient than UMAT is...

Try searching on github... Some crazy UMAT things lurk there.. But anyway diving into UMAT and making significant changes greatly increases your change to become unstable.

also try the command "abaqus licensing dslsstat -usage" in the command prompt/terminal emulator.

Yeah. I would also assume that surface traction is the way to go. Anyway what is the advanced option to set the load?

I am experiencing a strange error from the when I submit the job. "Error in job Job-1: in keyword *NODE, file "Job-1.inp", line 9: Invalid nodal coordinate values were specified for the following nodes: 1 2 3 ..." and so on. I am running the Abaqus 2021 version on Arch/Linux and the Job-1.inp...

I have finaly came up with a solution. The problem was in my argument to define initial stress to a defined set of elements Set-all. Abaqus seems to do that automatically (if meshes are the same), therefore leaving the argument blank successfully applies the initial stress imported from a...

I am trying to define a stress field as a initial condition. My procedure Analysis 1 - Job-1: Step-1: load "elasto-plastic deformation" Step-2: unload "residual stress visible" Created a set of all elements: *Elset, elset=Set-all, instance=Part-1-1, generate 1, 100, 1 Analysis 2 -...

I have exported stress data from a .odb using a Python script. See this post: http://www.eng-tips.com/viewthread.cfm?qid=423642

Thanks cooken. S.elementLabel was exactly what I nedded.

I would like to export Cauchy stresses and Element IDs from a generic .odb I have written this entry level Python script that writes stresses to a .txt file: ----------------------CODE START------------------------------------ from odbAccess import * # open the result contatinig output...

I believe that what you are trying to achieve can be done by first sectioning the part and than appliying mesh controls in the meshing module of abaqus. I attached some screen shots. http://files.engineering.com/getfile.aspx?folder=166e333b-0438-4ce4-acfd-f02000328f28&file=1.PNG...

I am still quite new to Abaqus and FEM in general so take my advice with a pinch of salt. If you are simulating a sequence of applied loads try a static/general step for each applied load. In that way you include the loading history of each applied torque.

Try the following: 1. increase the constrained volume percentage. example from 50% to 90% of initial volume 2. set max optimization cycles to round 5 just to see it tosca is solving correctly 3. decrease volume percentage and repeat step 2 until you reach your bottom reduction. Try to play with...

judging from the job monitor picture the analysis failed in step 3. If i see correctly the step time is really small so I assume that step 3 is a linear perturbation step. Have you tried changing this step in to a standard one? Maybe that helps.

thread799-372015 I got the same error message: Error in Opt-Process-1: Optimization parameterfile given by --opt <parameter-file> does not exist. Error in Opt-Process-1: Check that parameterfile "Opt-Process-1.par" exist ! Error in Opt-Process-1: Optimization process failed with an error. I...

I remember doing that in the past and each time it failed after I set the first HardPoint, any HardPoint. My problem regarding the ''Actuator reached upper force limit'' at the start of this tread was resolved by adjusting the spring preload, more precisely lowering it. After that, Adams...

GregLocock, thank you for the suggestion. I will check if our license includes MSC support. We are using educational licenses, which were hard to acquire in the first place, so I hope for the best... Meanwhile, if someone sees what went wrong, please comment.