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  1. PeteTranc

    Abaqus invalid nodal coordinate values

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

    The ratio of deformation speed to wave speed exceeds 1.0000 in at least one element error in ABAQUS

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

    Adding tool orientation during the machining process in Abaqus

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

    Abaqus scripting & UMAT subroutine or linking Abaqus & MATLAB for an iterative process?

    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...
  5. PeteTranc

    Abaqus scripting & UMAT subroutine or linking Abaqus & MATLAB for an iterative process?

    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.
  6. PeteTranc

    Abaqus job not running?

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

    Load on projected area - Shells

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

    Abaqus invalid nodal coordinate values

    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...
  9. PeteTranc

    Inital stress as a predefined field

    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...
  10. PeteTranc

    Inital stress as a predefined field

    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 -...
  11. PeteTranc

    Extract the data from a batch of analyses

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

    Export Stress and element ID from Abaqus using a Python script

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

    Export Stress and element ID from Abaqus using a Python script

    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...
  14. PeteTranc

    Meshing an irregular part in Abaqus

    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...
  15. PeteTranc

    Abaqus Standard or Explicit?

    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.
  16. PeteTranc

    Abaqus topology optimization

    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...
  17. PeteTranc

    problem with TOSCA ABAQUS

    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.
  18. PeteTranc

    Problem solved - Optimization parameterfile does not exist.

    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...
  19. PeteTranc

    ADAMS/CAR unknown error

    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...
  20. PeteTranc

    ADAMS/CAR unknown error

    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.

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