Optimization of the foam-filled aluminum tubes for crush box application
Optimization of the foam-filled aluminum tubes for crush box application
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DOI：
10.1016/j.tws.2007.07.016
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发表时间：
2008-02
影响因子：
6.4
通讯作者：
H. Zarei;M. Kröger
中科院分区：
文献类型：
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作者：
H. Zarei;M. Kröger
对空方铝管和泡沫填充方铝管进行了轴向冲击破碎试验。此外，为了找到更多的细节破碎过程中，有限元模拟的实验已经完成。为了寻找更高效、更轻便的挤压吸能器，实现最大能量吸收，本文采用多设计优化技术对矩形管进行了优化。根据实际要求，确定了吸收能量最大、重量最轻的最佳管几何形状。以前的工作结果表明，使用高密度蜂窝填充管将导致更多的能量吸收，但重量效率已经损失[Zarei HR，Kröger M.最佳蜂窝填充碰撞吸收器设计。Mater Des 2007;29：193-204]。因此，为了了解不同密度泡沫填充管的挤压行为，进行了全面的研究。MDO过程已被实施，以找到一个最佳的填充管，吸收相同的能量作为一个最佳的空管可以吸收。
Axial impact crush tests on empty and foam-filled square aluminum tubes have been performed. Furthermore, in order to find more details about the crush processes, finite element simulations of the experiments have been done. In terms of finding more efficient and lighter crush absorber and achieving maximum energy absorption, multidesign optimization (MDO) technique has been applied for optimizing the square rectangular tubes. Based on practical requirements the optimum tube geometry, which absorbs maximum energy and has a minimum weight, has been determined. Results of previous work indicated that using high density honeycomb for filling the tubes will results more energy absorption but the weight efficiency has been lost [Zarei HR, Kröger M. Optimum honeycomb filled crash absorber design. Mater Des 2007;29:193–204]. Therefore, a comprehensive study has been performed in order to find out the crush behavior of tube filled with foam with different densities. The MDO procedure has been implemented to find an optimum filled tube that absorbed the same energy as an optimum empty tube can absorb.