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首页> 外文期刊>International journal of mechanics and materials in design >On the FE modeling of closed-cell Aluminum Foam
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On the FE modeling of closed-cell Aluminum Foam

机译：关于闭孔铝泡沫的有限元建模

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This investigation is concerned with the development of a multi-unit-cell which enables the modeling of the mechanical response of metallic foams subject to oblique loadings. The geometry of the cell was derived from careful observation of the foam morphology. The new closed unit cell is formed by the use of ellipsoids which are interconnected through a truncated pyramid. In this approach, we represent the morphology of closed-cell aluminum foams through the use of corresponding average uniform geometrical and mechanical properties. Extensive multi-unit-cell finite element analyses were conducted to examine the effect of key geometric parameters on the collapse load, normalized crush force versus deformation characteristics as well as the corresponding energy absorption. The numerical simulations were compared with crush test experiments involving different oblique loads. In spite of showing an initial stiff response, which is typical in idealized numerical models, the results revealed that the developed multi-unit-cell is able to simulate the crush behavior of closed-cell foams.
机译：该研究与多单元室的发展有关，该单元能够对承受倾斜载荷的金属泡沫的机械响应进行建模。孔的几何形状是通过仔细观察泡沫形态而得出的。新的封闭式晶胞是通过使用椭圆形而形成的，这些椭圆形通过截棱锥相互连接。在这种方法中，我们通过使用相应的平均均匀几何和机械性能来代表闭孔铝泡沫的形态。进行了广泛的多晶胞有限元分析，以检查关键几何参数对塌陷载荷，归一化压溃力与变形特性以及相应能量吸收的影响。将数值模拟与涉及不同倾斜载荷的压溃试验进行了比较。尽管显示出初始的刚性响应（这是理想化的数值模型中的典型值），但结果表明，开发的多单元泡沫能够模拟闭孔泡沫的挤压行为。

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