Effective Moduli of Cellular Materials
Effective Moduli of Cellular Materials
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多孔材料的有效模量
DOI：
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发表时间：
1993
期刊：
影响因子：
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通讯作者：
R. Hall
中科院分区：
文献类型：
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作者：
R. Hall
将某些材料近似为由在空间中随机取向或相对于固定轴随机取向的相同材料性质的单元组成通常是有用的。这种材料的实例是泡沫、多晶体和短切纤维复合材料，所有这些材料都可以表现出整体各向同性或可以由于制造/加工而具有优选的方向。本手稿简要回顾了以前的工作中的建模和绑定的有效模量的细胞的刚度/顺应性矩阵的基础上，这种材料，并提供了新的结果为无约束的三维和二维随机细胞材料与完全不对称的细胞刚度矩阵。这种材料的一个例子是具有相脱粘的短切纤维复合材料。
It is often useful to approximate certain materials as consisting of cells of identical material properties that are randomly oriented in space or with respect to a fixed axis. Examples of such materials are foams, polycrystals and chopped fiber composites, all of which may exhibit overall isotropy or may possess a preferred direction as a result of manufacturing/processing. The present manuscript briefly reviews previous work in the modeling and bounding of the effective moduli of such materials based on the stiffness/compliance matrices of the cells, and contributes new results for unconstrained 3D and 2D random-celled materials with fully unsymmetric cell stiffness matrices. An ex ample of such a material is a chopped fiber composite with phase debonding.