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- W4385293851 abstract "Abstract It is well known that ratcheting can cause failure in piping components or systems subjected to seismic or other cyclic loads. Commercial finite element codes cannot accurately simulate the ratcheting responses recorded in tests on piping components and systems. The reason for this can be traced to inadequate constitutive models in the existing analysis codes. To overcome this deficiency, we have incorporated an improved cyclic plasticity model, based on the Armstrong-Frederick kinematic hardening rule in conjunction with the Drucker-Palgen plastic modulus equation, into an ANSYS user subroutine. The analysis results for straight pipes subjected to constant internal pressure and quasi-static cyclic bending obtained from the modified ANSYS code are compared to experimental data, as well as to results from ABAQUS and the original ANSYS code. The simulations from the modified ANSYS are satisfactory and show a significant improvement over the original ANSYS and the ABAQUS codes." @default.
- W4385293851 created "2023-07-28" @default.
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- W4385293851 date "1996-11-17" @default.
- W4385293851 modified "2023-09-25" @default.
- W4385293851 title "Improved Simulation of Ratcheting in Straight Pipes" @default.
- W4385293851 doi "https://doi.org/10.1115/imece1996-0556" @default.
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