A Reliable Fracture Angle Determination Algorithm for Extended Puck's 3D Inter-Fiber Failure Criterion for Unidirectional Composites

被引：1
作者：
Gong, Yaohua [1 ]
Huang, Tao [1 ]
Zhang, Xun'an [1 ]
Jia, Purong [1 ]
Suo, Yongyong [1 ]
Zhao, Shuyi [2 ]
机构：
[1] Northwestern Polytech Univ, Sch Mech Civil Engn & Architecture, Xian 710129, Peoples R China
[2] AECC Commercial Aircraft Engine Co Ltd, Shanghai 201100, Peoples R China
来源：
MATERIALS | 2021年 / 14卷 / 21期
基金：
中国国家自然科学基金;
关键词：
extended Puck's criterion; UD composites; fracture angle; stress exposure; algorithm; EFFICIENT; STRENGTH;
D O I：
10.3390/ma14216325
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Determination of the fracture angle and maximum exposure value of extended Puck's 3D inter-fiber failure (IFF) criterion is of great importance for predicting the failure mechanism of unidirectional fiber-reinforced composites. In this paper, a reliable semi-analytical algorithm (RSAA) is presented for searching fracture angle and corresponding exposure value for the extended Puck's failure criterion. One hundred million cases are tested for verifying the accuracy of the present and other algorithms on Python using the strength-value-stress-state combinations more universal than those in previous literatures. The reliability of previous algorithms is discussed and counterexamples are provided for illustration. The statistical results show RSAA is adequate for implementation in extended Puck's criterion and much more reliable than previous algorithms. RSAA can correctly predict the results with a probability of over 99.999%.
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页数：14
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