Residual stress - Ansys welding simulation

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Discussion Overview

The discussion revolves around the determination of residual stresses due to TIG welding and the challenges participants face in transitioning from thermal analysis to structural analysis using ANSYS software. The scope includes technical explanations and problem-solving related to simulation techniques in welding processes.

Discussion Character

  • Technical explanation, Debate/contested, Homework-related

Main Points Raised

  • One participant is developing a model to determine residual stresses from TIG welding and has successfully completed a thermal analysis but struggles with the structural analysis phase.
  • Another participant is working on a similar problem related to friction stir welding and is also facing challenges in obtaining results for residual stresses.
  • A suggestion is made for users of APDL to create a second model with structural elements, utilize the LDREAD command to import thermal solutions, and apply boundary conditions before solving.
  • A different participant expresses interest in learning ANSYS Workbench for TIG welding analysis but encounters difficulties in moving the heat source during transient thermal analysis.

Areas of Agreement / Disagreement

Participants express various challenges and approaches related to welding simulations, but there is no consensus on solutions or methodologies, indicating multiple competing views and unresolved issues.

Contextual Notes

Limitations include potential dependencies on specific software versions, assumptions about user familiarity with ANSYS commands, and the need for further clarification on boundary conditions and heat source movement in simulations.

se7h
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Hello, first of all I apologize if there is already a topic with this solution but this is my first time here, and I'm a little lost :frown:

I'm developing a work which consists in the determination of residual stresses due to TIG welding. I have developed the model and ran a successful thermal analysis, however I am having trouble in moving to a structural analysis. I've read a few scripts but I can not load the temperature history for further structural analysis. The software I'm using is the ANSYS 12.0.

Thank you for your attention.

(I apologize for any mistake of vocabulary)
 
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do you get the solution of your above mention problem?
Even I am working on simulation of friction stir welding in ansys and facing similar problem in getting result for residual stresses induced due to welding
 
If you are using APDL then what you have to do is:

1. Create a second model that has structural elements. (Just change the element type and recreate the model, if you are using APDL this is very easy.)
2. Use the LDREAD command to import the thermal solution onto the structural elements
3. Apply any additional boundary conditions
4. Solve and post process.
 
Hi i try to learn ansys workbench, i want to develop tig welding analysis in ansys workbench but i can not. i try yo do transient thermal analysis but i can't move the heat source(tig welding). Can you help me? Thanks...
 

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