会议论文详细信息
10th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes | |
Fracture Prediction for High-strength Steel Sheet Subjected to Draw-bending Using Forming Limit Stress Criterion | |
Sekiguchi, C.^1 ; Hakoyama, T.^2 ; Kuwabara, T.^3 ; Fukiharu, H.^4 | |
Graduate School, Department of Mechanical Systems Engineering, Tokyo University of Agriculture and Technology, Tokyo, Japan^1 | |
Institute of Engineering, Tokyo University of Agriculture and Technology, Tokyo, Japan^2 | |
Division of Advanced Mechanical Systems Engineering, Institute of Engineering, Tokyo University of Agriculture and Technology, Tokyo, Japan^3 | |
Engineering Technology Division, CAE Technology Department, JSOL Corporation, Tokyo, Japan^4 | |
关键词: Draw-bending; Drawing speed; Forming limits; Fracture criteria; Fracture prediction; Plane strain tension; Test materials; Tube expansion; | |
Others : https://iopscience.iop.org/article/10.1088/1742-6596/734/3/032012/pdf DOI : 10.1088/1742-6596/734/3/032012 |
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来源: IOP | |
【 摘 要 】
A fracture criterion for sheet metals subjected to draw-bending is investigated using the concept of the forming limit stress criterion. The test material used is a 1.0-mm-thick high- strength steel sheet with a tensile strength of 590MPa. The specimen undergoes bendingunbending under tension when passing over the die profile. The drawing speed was set to 5-100 mm • s-1. The magnitude of true stress σDBwhen a specimen fractured has been precisely determined. Moreover, multiaxial tube expansion tests of the test material are performed to measure the forming limit stress σPTof the test material under plane-strain tension. It is found that σDBis larger than σPTby 2.8-6.3%. Therefore, it is concluded that the forming limit stress criterion is effective as a fracture criterion in draw-bending.【 预 览 】
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Fracture Prediction for High-strength Steel Sheet Subjected to Draw-bending Using Forming Limit Stress Criterion | 1047KB | download |