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首页> 外文期刊>Journal of mechanics of materials and structures >EXPERIMENTAL AND NUMERICAL ENERGY ABSORPTION STUDY OF ALUMINUM HONEYCOMB STRUCTURE FILLED WITH GRADED AND NONGRADED POLYURETHANE FOAM UNDER IN-PLANE AND OUT-OF-PLANE LOADING
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EXPERIMENTAL AND NUMERICAL ENERGY ABSORPTION STUDY OF ALUMINUM HONEYCOMB STRUCTURE FILLED WITH GRADED AND NONGRADED POLYURETHANE FOAM UNDER IN-PLANE AND OUT-OF-PLANE LOADING

机译：平面内和平面外荷载作用下梯度和非梯度聚氨酯泡沫填充蜂窝结构的实验和数值能量吸收研究

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This study aims to investigate the effect of honeycomb structure filled with graded and nongraded polyurethane foam on reaction force during energy absorption under in-plane and out-of-plane loadings. Three types of aluminum AL5052 honeycomb structures without filling, with graded filling and with nongraded filling were manufactured and subjected to quasistatic compression loading. In order to investigate the effect of reaction force and energy absorption capacity, honeycomb cores with different densities were selected. Afterward, the behavior of honeycomb structures was numerically simulated in the ABAQUS software. The results of finite element analysis show that using foam filling in honeycomb structures increases energy absorption. The structures filled with graded foam, shows better performance with the rate of stiffness reduction from impact location compared to those filled with nongraded foam. Energy absorption for graded foam structure occurs at a longer time period comparing to nongraded one. The energy absorption capacity of the structure under out-of-plane loading is much higher than in-plane loading, but its reaction force is very high. The results of empirical tests are greatly similar to that of numerical studies. Therefore, it is possible to use simulation in ABAQUS environment for solving more complex problems.
机译：这项研究的目的是研究在平面和平面外载荷作用下，充有梯度和非梯度聚氨酯泡沫的蜂窝结构对能量吸收过程中反作用力的影响。制造了三种不带填充的铝制AL5052蜂窝状结构，分等级填充和不分等级填充，并承受了准静态压缩载荷。为了研究反作用力和能量吸收能力的影响，选择了不同密度的蜂窝芯。之后，在ABAQUS软件中对蜂窝结构的行为进行了数值模拟。有限元分析的结果表明，在蜂窝结构中使用泡沫填充可增加能量吸收。与填充非渐变泡沫的结构相比，填充渐变泡沫的结构显示出更好的性能，并且从冲击位置降低了刚度。与非梯度泡沫相比，梯度泡沫结构的能量吸收发生的时间更长。结构在平面外载荷下的能量吸收能力远高于平面内载荷，但其反作用力非常高。实证检验的结果与数值研究非常相似。因此，可以在ABAQUS环境中使用仿真来解决更复杂的问题。

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