Based on the micro-mechanics of failure (MMF) theory, the accelerated testing methodology (ATM) and the VUMAT subroutine in ABAQUS, this study put forward a novel microscopic analysis approach for the large deformation failure analysis of composite. The predicted strength accuracy of the MMF approach for the bolted structure was then compared with those calculated based on the Tsai–Wu and Hashin theories, and with the experimental results. Results showed that the MMF method enjoyed the highest strength accuracy with an error of 7.2%, and the component damage initial occurred in matrix of the 90-degree layer and the initial failure of fiber occurred in the 0-degree layer. The failure mode predicted by the MMF approach behaved as shearing mode, which was in agreement with the experimental results. The long-term static strength of the bolted structure was predicted based on the MMF/ATM approach, and a comparison with the test results was conducted.

基于微观破坏力学理论，加速测试方法（ATM）和ABAQUS中的VUMAT子程序，为复合材料大变形破坏分析提出了一种新颖的微观分析方法。然后将MMF方法对螺栓结构的预测强度精度与基于Tsai-Wu和Hashin理论计算的强度精度以及实验结果进行比较。结果表明，MMF法具有最高的强度精度，误差为7.2％，部件破坏最初发生在90度层的基体中，而纤维初始破坏发生在0度层中。MMF方法预测的破坏模式表现为剪切模式，与实验结果吻合。