Measurement and analysis of the structural performance of cellular metal sandwich construction
Measurement and analysis of the structural performance of cellular metal sandwich construction
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DOI：
10.1016/s0020-7403(00)00070-9
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发表时间：
2001-08-01
影响因子：
7.3
通讯作者：
Evans, AG
中科院分区：
文献类型：
--
作者：
Bart-Smith, H;Hutchinson, JW;Evans, AG
对多孔金属芯薄夹层结构的弯曲性能进行了测试和模拟。基于工作面屈服、岩心剪切和压痕的破坏荷载准则，绘制了主要破坏现象的机理图。先前开发的核心材料的本构律已纳入数值模拟。与实测响应进行了比较。最初的差异归因于岩心厚度的影响，通过输入岩心剪切性能测量具有相同厚度的材料来纠正。对刚度、屈服载荷和极限载荷的解析估计与数值模拟和实验结果进行了比较。2001爱思唯尔科学有限公司版权所有。
The bending performance of sandwich construction with thin cellular metal cores has been measured and simulated. A mechanism map has been generated to characterize the predominant failure phenomena based upon collapse load criteria for face yielding, core shear and indentation. A previously developed constitutive law for the core material has been incorporated into numerical simulations. Comparisons have been made with the measured response. Initial discrepancies attributed to a core thinness effect were rectified by inputting core shear properties measured on materials having the same thickness. Analytical estimates for the stiffness,, yield load and limit load are compared with the numerical simulations and experimental results. (C) 2001 Elsevier Science Ltd. All rights reserved.