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采用代理模型获得V-型皱褶芯材等效屈服应力、等效平台应力和几何参数之间的关系,并据此提出了一种承受静力/准静力面外压缩的V-型皱褶芯材均质化等效模型。计算结果与试验结果的对比表明:皱褶芯材的均质化等效模型可以很好地模拟原结构的弹塑性力学特性,并能大大减少计算耗时。对于皱褶夹芯板在结构中,特别是抗坠毁吸能结构中的应用,本文的等效模型提供了一种高效率的计算及优化手段。
The relationship between equivalent yield stress and equivalent platform stress and geometric parameters of V-type corrugated core was obtained by using the proxy model, and a V-wrinkle subjected to static / quasi-static out-of-plane compression Pleated core homogenization equivalent model. The comparison between the calculated results and the experimental results shows that the homogenization equivalent model of the corrugated core can well simulate the elasto-plastic mechanical properties of the original structure and greatly reduce the computational time. For the application of corrugated sandwich panels in structures, especially in crash-proof energy-absorbing structures, the equivalent model in this paper provides a highly efficient calculation and optimization method.