Abstract This paper presents a multistable variable cross-section laminate (MVCL), which is designed by applying the displacement constraint at the two opposing ends of the laminate. A theoretical model describing the MVCL as rigid bars connected with compliant hinges is built to predict the equilibrium configurations and snap-through loads of the MVCL. The snap-through process of the multistable structure is investigated via experiment and finite element analysis (FEA). Subsequently, the theoretical model is improved by simplifying the middle segment of the MVCL as an elastic beam. Good agreement is obtained between the experimental test, FEA, and improved theoretical model results. It is shown that the current approach can be successfully applied to predict the equilibrium configurations and snap-through loads of an MVCL. The snap-through loads can be adjusted by changing the middle segment length of an MVCL.

中文翻译：

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用变截面法和应用位移约束设计多稳定复合材料层合板

摘要 本文提出了一种多稳态变截面层压板（MVCL），它是通过在层压板的两个相对端施加位移约束来设计的。建立了一个将MVCL 描述为与柔性铰链连接的刚性杆的理论模型，以预测MVCL 的平衡配置和快速通过载荷。通过实验和有限元分析 (FEA) 研究了多稳态结构的快速通过过程。随后，通过将MVCL的中间段简化为弹性梁来改进理论模型。在实验测试、FEA 和改进的理论模型结果之间获得了良好的一致性。结果表明，当前的方法可以成功地应用于预测 MVCL 的平衡配置和快速通过负载。