Deformation Behavior of TRIP590 Advanced High Strength Steel under Biaxial Loading

doi:10.3901/JME.2016.06.046

Abstract

Abstract: In order to explore the complex deformation behavior of TRIP590 advanced high strength, the stress-strain relations of it under different biaxial loading paths are investigated with theoretical, experimental and finite element methods. The biaxial tensile tests of cruciform specimen for TRIP590 advanced high strength steel sheet are performed and the biaxial tensile properties are obtained under different loading paths. Based on elastic-plastic theory and the generalized Hook’s law, the biaxial tensile true stress-true strain curves including elastic and plastic strain are presented using Mises and Hill48(the parameters of Hill48 yield function are calculated with two methods) yield criteria. The theoretical and experimental results are compared with each other and the accuracy and errors of different yield criteria are analyzed. The finite element method(FEM) simulation of the biaxial tensile tests of the cruciform specimen are carried out using ABAQUS FE software based on two yield criteria. In addition, the load-displacement curves measured directly from the experiment process are compared with the results of FEM simulation and the accuracy of different yield criteria is analyzed further. The feasibility of the calculation of biaxial stress-strain curves using the biaxial tensile tests of cruciform specimen adopted in this study is verified. The research results can provide important technical help for the application of TRIP590 advanced high strength steel in actual forming process.

Key words: biaxial tension, finite element method(FEM) simulation, TRIP590 advanced high strength steel, yield criterion

CLC Number:

TG301

WANG Haibo, WAN Min, LI Qiang, WU Xiangdong, ZHAI Jing. Deformation Behavior of TRIP590 Advanced High Strength Steel under Biaxial Loading[J]. Journal of Mechanical Engineering, 2016, 52(6): 46-58.

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