LAUSR

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.