General Mechanical

General Mechanical

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Don’t know how to evaluate residual stress

    • Woochan Lee
      Subscriber

      I want to evaluate residual stress in cantilever beam after I applied bending load. 

      But I don't know how.

      Pleas tell me how to simulate residual stress in static stuctural.

    • Sampat Kumar
      Ansys Employee

      Hi  Woochan,
      Do you want to calculate the stress distribution throughout the Beam profile? Will you please explain the work flow of your project? 

      Regards,
      Sampat

    • peteroznewman
      Subscriber

      Add a Plasticity model such as Bilinear Isotropic Hardening to your material, or use the Steel NL from the library. The default Structural Steel material does not have plasticity defined, so you will not see any permanent deformation after bending that material past the yield point.

      Use a two step solution sequence. Step 1 apply a force large enough to exceed the yield stress. Step 2 set the force to zero.  At the end of Step 2, the beam will show some permanent deformation after it springs back from the deformation at the end of Step 1. The beam will also have residual stress.

      Under Analysis Settings, you must turn on Large Deflection.  You may also need to set both Step 1 and 2 to have Auto Time Stepping turned on and set the Initial and Minimum Substeps to 10 and Maximum Substeps to 100 to help the solution converge.

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