Calculation of Tensile Strength of Unidirectional Composites Based on Probability Theory and Monte Carlo Method

2019 2nd International Conference on Advanced Materials, Intelligent Manufacturing and Automation

Zou, Jiajun^1 ; Cao, Ruizhi^1 ; Shao, Minqiang^1

College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Jiangsun, Nanjing

210016, China^1

关键词: Failure Probability;    Linear distribution;    Longitudinal tensile strengths;    Probability modeling;    Probability theory;    Two dimensional distribution;    Unidirectional composites;    Weakest-link principle;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/569/2/022005/pdf
DOI  :  10.1088/1757-899X/569/2/022005

来源: IOP

【 摘 要 】

In this paper, Monte Carlo method combined with the random critical-core probability model is proposed to calculate the longitudinal tensile strength of unidirectional composites. This method considers two-dimensional distribution of fibers on the cross-section, while the theoretical analysis method only takes the linear distribution of fibers into account. Using the weakest link principle, the failure probability and average strength of the unidirectional composites are obtained. The results show that the calculated values of longitudinal tensile strength of T300/5208 composite and unidirectional C/C composites agree well with the experimental results.