Plastic analysis of multilayer sandwich beams with metal foam cores
Plastic analysis of multilayer sandwich beams with metal foam cores
复制标题
泡沫金属芯多层夹芯梁的塑性分析
DOI：
10.1007/s00707-016-1639-9
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发表时间：
2016-09-01
期刊：
影响因子：
2.7
通讯作者：
Wang, T. J.
中科院分区：
文献类型：
--
作者：
Zhang, Jianxun;Qin, Qinghua;Wang, T. J.
研究了完全固支的泡沫金属夹层梁的塑性行为。提出了泡沫金属夹层结构的塑性屈服准则。考虑大挠度引起的弯曲和拉伸的相互作用，推导了受平冲头横向载荷的多层夹层梁的解析解。进行了数值计算，并取得了良好的一致性之间的解析解和数值结果。讨论了多层复合、冲头尺寸和芯部强度对复合效果的影响。使用解析公式，优化设计图表构造，以最大限度地提高承载能力的多层夹层梁对于给定的质量。结果表明，该分析模型可以合理地预测泡沫金属夹层梁的屈服后性能。
The plastic behavior of fully clamped multilayer sandwich beams with metal foam cores is investigated. A plastic yield criterion for multilayer sandwich structures with metal foam cores is proposed. Analytical solutions are derived for the multilayer sandwich beams transversely loaded by a flat punch considering the interaction of bending and stretching induced by large deflections. Numerical calculations are carried out, and good agreement is achieved between the analytical solutions and numerical results. The effects of the multilayer, punch size and core strength are discussed. Using the analytical formulae, optimal design charts are constructed to maximize the load-carrying capacity of the multilayer sandwich beams for a given mass. It is demonstrated that the present analytical model can reasonably predict the post-yield behavior of the multilayer sandwich beams with metal foam cores.