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  1. MG83

    Elastic-Plastic Analysis for brittle materials

    Hi, I have a project which is a part of pipeline equipment (insulation joint) that contains a brittle filler between metallic parts. How can i perform elastic-plastic analysis? Is it possible to use perfect plastic for that material?
  2. MG83

    Elastic plastic Ratcheting

    Hi Please tell me in order to evaluate elastic-plastic ratcheting in a vessel, which kind of load should be considered, Design pressure or operating pressure? Thanks
  3. MG83

    Design procedure for Piping Tee

    Hi, Can anyone tell me a procedure to design an Equal Tee? The client has been asked us to consider proof test according to MSS-SP75 rely on actual ultimate strength. So i performed an Elastic-Plastic FEA according to ASME viii-2 but the Tee will shakedown because of the high proof test...
  4. MG83

    Hydro Bend test via ASME VIII Div2

    Hi, According to B31.8 para 833 we have to consider bending moment on pipeline equipment such as Insulating Joints. So we perform hydrostatic pressure + Bending test on a prototype equipment. The question is "how to use div2 part5 criteria in such test?" and "how to interpret the stresses...
  5. MG83

    Plastic Strain increment after reaching the Ultimate tensile strength

    I have analyzed an E-P 3D model and the solution has converged. Stress-strain data droved from Annex 3-D of ASME VIII-2. But i saw while equivalent stress reached the ultimate tensile strength limit (sigma uts,t) in time step 0.85 , the plastic strain is 0.12 . Also in time step 0.93 the stress...

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