Analysis of closed cell metal composites
Analysis of closed cell metal composites
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DOI：
10.1016/1359-6454(95)00195-6
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发表时间：
1996-05
期刊：
影响因子：
9.4
通讯作者：
M. Ozgur;R. Mullen;G. Welsch
中科院分区：
文献类型：
--
作者：
M. Ozgur;R. Mullen;G. Welsch
复合材料的封闭的金属细胞，其中细胞具有均匀的壁厚，并限制在其内部的流体，使用圆柱形细胞与正方形，六边形和圆形的横截面建模。对它们在压缩中的预测力学行为的分析包括细胞内部的流体和压力的影响。开发了一个专门的有限元程序来计算内部压力。有限元计算预测填充细胞复合材料的压缩刚度。弹性和塑性细胞壁变形的结果。与周围空气电池结构相比，内部加压或流体填充电池的复合材料显示出增加的压缩刚度和延迟的塑性屈服的开始。
Composites of closed metal cells, in which the cells have uniform wall thickness and which confine a fluid in their interior, are modeled using cylindrical cells with square, hexagonal and circular cross sections. The analysis of their predicted mechanical behaviors in compression includes the effects of fluids and pressure in the cell interiors. A specialized finite element program is developed to account for the internal pressure. The finite element calculations predict the compressive stiffness of filled cell composites. Results for elastic and plastic cell wall deformation are also presented. Compared to the ambient air cell structures, the composites of internally pressurized or fluid-filled cells show increased compressive stiffness and delayed onset of plastic yielding.