冲击载荷下箭头型负泊松比蜂窝结构动态吸能性能研究

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振动与冲击 ›› 2021, Vol. 40 ›› Issue (11) : 70-77.

论文

白临奇，史小全，刘宏瑞，孙雅洲

作者信息 +

Dynamic energy absorption performance of arrow type honeycomb structure with negative Poisson’s ratio under impact load

BAI Linqi, SHI Xiaoquan, LIU Hongrui, SUN Yazhou

Author information +

文章历史 +

摘要

以箭头型负泊松比蜂窝结构为研究对象，在已有的冲击载荷下蜂窝结构平台应力理论模型的基础上，着重考虑平台区和平台应力增强区，建立了其受冲击载荷时吸收能量的理论模型，得到了其在冲击载荷下不同阶段吸收能量及对应等效应力大小与几何参数的关系。基于ANSYS仿真软件模拟了在冲击载荷作用下，箭头型负泊松比蜂窝结构的吸能和应力情况，对比验证了仿真结果与理论模型。结果表明,利用所建立的理论模型能够较为准确地描述蜂窝结构在冲击载荷下的动态吸能性能，并为负泊松比蜂窝结构的几何参数选择和优化设计提供指导。

Abstract

Here, taking an arrow type honeycomb structure with negative Poisson’s ratio as the study object, based on the existing theoretical stress model of honeycomb structure platform under impact load, its theoretical model of energy absorption under impact load was established considering platform area and platform stress enhancement area, and relations between the absorbed energy and the corresponding equivalent stress and geometric parameters in different stages under impact load were obtained.Based on the simulation software ANSYS, the energy absorption and stress of the arrow type honeycomb structure with negative Poisson’s ratio under impact load were simulated.The simulation results were compared with the theoretical model results to verify the theoretical model.The results showed that the proposed theoretical model can accurately describe the dynamic energy absorption performance of honeycomb structure under impact load, and provide a guidance for geometric parameter choosing and optimal design of honeycomb structure with negative Poisson’s ratio.

导出引用

白临奇，史小全，刘宏瑞，孙雅洲. 冲击载荷下箭头型负泊松比蜂窝结构动态吸能性能研究[J]. 振动与冲击, 2021, 40(11): 70-77

BAI Linqi, SHI Xiaoquan, LIU Hongrui, SUN Yazhou. Dynamic energy absorption performance of arrow type honeycomb structure with negative Poisson’s ratio under impact load[J]. Journal of Vibration and Shock, 2021, 40(11): 70-77

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