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基于破坏机制、最大应力和Tsai-Wu破坏准则,提出复合层压板的最小质量设计。其目的是论证复合材料设计中最近提出的FMB破坏准则的有效性。破坏准则认为不同的破坏机制,如,纤维破坏、模具破裂、纤维压缩破坏以及模具压碎,与不同的荷载条件相关。将遗传算法用于优化研究中,当层压板受到压-压荷载时,与破坏机制和最大破坏应力准则相比,在破坏包络图的第三象限,Tsai-Wu破坏准则预测超过预期层压板质量达到86%。破坏机制以及最大破坏应力标准给出了可比较的质量标准。破坏准则可以考虑用于复合结构的强度设计。
Based on the failure mechanism, the maximum stress and the Tsai-Wu failure criterion, the minimum mass design of composite laminates is proposed. The purpose is to demonstrate the validity of the recently proposed FMB failure criterion in composite design. The failure criterion considers different failure mechanisms, such as fiber failure, mold rupture, fiber compression failure and mold crush, related to different load conditions. The genetic algorithm is used in the optimization research. When the laminate is subjected to pressure-compression load, compared with the failure mechanism and the maximum failure stress criterion, in the third quadrant of the damage envelope graph, the Tsai-Wu failure criterion predicts to exceed the expected laminate Quality reached 86%. The failure mechanism and the maximum stress of failure criterion give comparable quality standards. Failure criteria can be considered for strength design of composite structures.