Simulation of residual stress measuring process in a fiber material cylinder using slitting method

2nd International Symposium on Application of Materials Science and Energy Materials

材料科学;能源学

Hu, Xiaoyi^1 ; Liu, Dalie^1

School of Engineering, Zhejiang AandF University, Hangzhou, Zhejiang, China^1

关键词: Fiber materials;    Finite element simulations;    Measurement model;    Nonuniform stress distribution;    Residual stress fields;    Slitting method;    Stress measuring;    Temperature-stress field;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/490/2/022082/pdf
DOI  :  10.1088/1757-899X/490/2/022082

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In order to measure the residual stress in fiber material more conveniently by strain gauge, A measurement scheme based on slitting method and finite element simulation is proposed in this paper. The measurement models with different crack depth are established, and the influence of the distance from crack to strain foil are also investigated. In addition, the residual stress field is estimated by temperature-stress field analogy. Simulation results show that the distance from strain gauge to crack should better be between 0.3 and 0.5 times of the cylinder radius. By counting the difference between different stress-depth curves of the crack slitting, the inner stress in the cylinder with non-uniform stress distribution can be evaluated.