Computation of material parameters of Chaboche kinematic hardening model using Grey wolf optimization and uniaxial ratcheting prediction of SS316 Stainless Steel
International Journal of Mechanical Engineering |
© 2019 by SSRG - IJME Journal |
Volume 6 Issue 8 |
Year of Publication : 2019 |
Authors : Jagabandhu Shit |
How to Cite?
Jagabandhu Shit, "Computation of material parameters of Chaboche kinematic hardening model using Grey wolf optimization and uniaxial ratcheting prediction of SS316 Stainless Steel," SSRG International Journal of Mechanical Engineering, vol. 6, no. 8, pp. 33-38, 2019. Crossref, https://doi.org/10.14445/23488360/IJME-V6I8P105
Abstract:
This paper deals with the computation of hardening parameters using the Grey wolf optimization (GWO) approach with finite element (FE) simulation to study the uniaxial ratcheting behavior of SS316 stainless steel. Chaboche's kinematic hardening model is used to predict this kind of cyclic plastic phenomenon of the material. Ratcheting strain occurs even after the saturation of the material. The parameters obtained from a strain-controlled saturated hysteresis loop are used in the material model. The material model is a plugged infinite element commercial package, ABAQUS, for simulation of ratcheting behavior. The finite element simulation is based on the Von-Mises yield function, flow rule, kinematic hardening rule, and yield surface consistency condition. The proposed optimization technique, GWO, is used for material parameters optimization of SS 316 steel. The simulation results are compared to the one obtained using manually determined parameters. The simulation results confirm the potentiality and efficacy of the proposed KHA method.
Keywords:
hardening parameters, Grey wolf optimization, Finite element, ratcheting, Von-Mises yield function.
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