准静态压缩载荷作用下U型折叠式夹层板芯层变形机理研究

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振动与冲击 ›› 2022, Vol. 41 ›› Issue (8) : 223-230.

论文

李遥，刘昆，沈超明，王加夏

作者信息 +

A study on the deformation mechanism of U-type corrugated cores sandwich panels subjected to quasi-static compression load

LI Yao,LIU Kun,SHEN Chaoming,WANG Jiaxia

Author information +

文章历史 +

摘要

折叠式夹层板具备优越的力学性能，可满足船舶设计的诸多要求，已开始应用于高端船舶的设计制造中。本文以U型折叠式夹层板为研究对象，从试验、仿真以及解析三方面，研究了面内准静态压缩载荷作用下U型折叠式夹层板的解析预报方法。通过设计开展准静态压缩试验以及相应的数值计算，分析得出了U型夹层板在准静态压缩载荷作用下结构变形的特征并对夹层板的变形过程进行归纳分类；在此基础上，提出了折叠式夹层板结构在准静态压缩载荷下的变形模式，建立了折叠式夹层板塑性变形的几何数学模型，并推导出夹层板结构变形抗力的解析计算公式，最后以试验和仿真结果为依据验证解析计算方法和公式的正确性。结果表明：解析结果与试验和仿真结果吻合较好。本文的解析方法对折叠式夹层板压皱性能设计及评估具有指导意义。

Abstract

The corrugated cores sandwich panel has excellent mechanical properties and can meet many requirements of ship design. It has been applied in the design and manufacture of high-end ships. Therefore, this paper takes the U-type corrugated cores sandwich panels as the research object. The analytical prediction methods of U-type corrugated cores sandwich panels under in-plane quasi-static compression load are studied though experiment, simulation and theoretical analysis. By designing and carrying out quasi-static stamping test and corresponding simulation, the deformation characteristics of the U-type corrugated cores sandwich panels were analyzed and the deformation process were summarized and classified. On the basis, the deformation mode of the U-type corrugated cores sandwich panels are proposed, the geometric mathematical models of the plastic deformation of the U-type corrugated cores sandwich panels are established, and the analytical calculation formulas of the deformation resistance of the U-type corrugated cores sandwich panels are deduced. Finally, the calculated results are compared with the test results for verification. The results show that the analytical results are in good agreement with the experimental and simulation results. The analytical method presented in this paper has guiding significance for the design and evaluation of crushing performance of corrugated cores sandwich panels.

导出引用

李遥，刘昆，沈超明，王加夏. 准静态压缩载荷作用下U型折叠式夹层板芯层变形机理研究[J]. 振动与冲击, 2022, 41(8): 223-230

LI Yao,LIU Kun,SHEN Chaoming,WANG Jiaxia. A study on the deformation mechanism of U-type corrugated cores sandwich panels subjected to quasi-static compression load[J]. Journal of Vibration and Shock, 2022, 41(8): 223-230

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