To read this content please select one of the options below:

Simultaneous identification of multi-parameter for power hardening elastoplastic problems in three-dimensional geometries

Chunyun Zhang (Key Laboratory of Advanced Technology for Aerospace Vehicles of Liaoning Province, State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian, China)
Jie Mei (Science and Technology on Space Physics Laboratory, China Academy of Launch Vehicle Technology, Beijing, China)
Yushuai Bai (Key Laboratory of Advanced Technology for Aerospace Vehicles of Liaoning Province, State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian, China)
Miao Cui (Key Laboratory of Advanced Technology for Aerospace Vehicles of Liaoning Province, State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian, China)
Haifeng Peng (Key Laboratory of Advanced Technology for Aerospace Vehicles of Liaoning Province, State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian, China)
X. W. Gao (Key Laboratory of Advanced Technology for Aerospace Vehicles of Liaoning Province, State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian, China)

Engineering Computations

ISSN: 0264-4401

Article publication date: 9 August 2022

Issue publication date: 23 August 2022

126

Abstract

Purpose

The purpose of this study is to simultaneously determine the constitutive parameters and boundary conditions by solving inverse mechanical problems of power hardening elastoplastic materials in three-dimensional geometries.

Design/methodology/approach

The power hardening elastoplastic problem is solved by the complex variable finite element method in software ABAQUS, based on a three-dimensional complex stress element using user-defined element subroutine. The complex-variable-differentiation method is introduced and used to accurately calculate the sensitivity coefficients in the multiple parameters identification method, and the Levenberg–Marquardt algorithm is applied to carry out the inversion.

Findings

Numerical results indicate that the complex variable finite element method has good performance for solving elastoplastic problems of three-dimensional geometries. The inversion method is effective and accurate for simultaneously identifying multi-parameters of power hardening elastoplastic problems in three-dimensional geometries, which could be employed for solving inverse elastoplastic problems in engineering applications.

Originality/value

The constitutive parameters and boundary conditions are simultaneously identified for power hardening elastoplastic problems in three-dimensional geometries, which is much challenging in practical applications. The numerical results show that the inversion method has high accuracy, good stability, and fast convergence speed.

Keywords

Acknowledgements

Financial support of this work by the National Nature Science Foundation of China (12172078) and the Fundamental Research Funds for the Central Universities (DUT21LK04) is gratefully acknowledged.

Citation

Zhang, C., Mei, J., Bai, Y., Cui, M., Peng, H. and Gao, X.W. (2022), "Simultaneous identification of multi-parameter for power hardening elastoplastic problems in three-dimensional geometries", Engineering Computations, Vol. 39 No. 8, pp. 2990-3011. https://doi.org/10.1108/EC-12-2021-0733

Publisher

:

Emerald Publishing Limited

Copyright © 2022, Emerald Publishing Limited

Related articles