一种负泊松比正弦曲线蜂窝结构的面内冲击动力学分析

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摘要研究了一种全参数化的正弦曲线蜂窝结构，通过Pro/Engineer构建了其参数化模型，采用ABAQUS建立了正弦曲线蜂窝结构的有限元模型。研究了不同振幅、不同胞壁厚度的正弦曲线蜂窝结构在不同冲击速度下的面内动力学响应。研究结果表明，正弦曲线蜂窝结构的反作用力波动情况与其振幅以及冲击速度直接相关。振幅越小、蜂窝结构胞壁越厚，其反作用力波动越明显。速度越高，蜂窝结构的反作用力波动越明显。而振幅较大的正弦曲线蜂窝结构，在不同的速度下，其反作用力表现出了较好的稳定性。正弦曲线蜂窝结构固定端的平台应力主要与其厚度有直接关系，与冲击速度无关。通过对正弦曲线蜂窝结构的能量吸收情况分析表明，随着振幅的增加，其能量吸收能力相对下降，随着速度的提高，蜂窝结构能量吸收能力趋向于一致。研究表明，正弦曲线蜂窝结构的轻微拉胀效应可增强其平面内能量吸收能力，相对普通的常规正六边形蜂窝结构，具有更好的能量吸收效果。

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	邓小林
	刘旺玉

关键词 ：负泊松比, 正弦曲线, 蜂窝结构, 面内冲击

Abstract：

Research a sine curve of the parameterized honeycomb structure, through the Pro/Engineer software build the parameterized model of honeycomb structure, honeycomb structure finite element model was established using ABAQUS software. Different amplitude and wall thickness of the honeycomb structure were studied under different impact velocities. The research results show that reaction of honeycomb structure is directly related to the amplitude of honeycomb structure and the impact velocity. The smaller the amplitude and the thicker the cell wall of honeycomb structure, reaction fluctuations of honeycomb more obvious. The greater the impact velocity，reaction fluctuations of honeycomb more obvious. The greater the amplitude of the honeycomb structure, reaction has good stability. Platform stress mainly depends on the cell wall thickness of cellular structure, has nothing to do with the impact velocity. Energy absorption characteristics for sine curve of honeycombs with different amplitude have research. With the increase of amplitude, energy absorption capacity decreased. With the increase of speed, sine curve of honeycomb structure energy absorption ability tends to be consistent. Research has shown that a slight auxetic effect can enhance the capacity of energy absorption. Sine curve honeycomb structure relative hexagonal honeycomb structure has better energy absorption effect.

Key words： negative poisson's ratio Sine curve Honeycomb structure In-plane impact

收稿日期: 2015-12-28 出版日期: 2017-06-28

引用本文:

邓小林，刘旺玉. 一种负泊松比正弦曲线蜂窝结构的面内冲击动力学分析[J]. 振动与冲击, 2017, 36(13): 103-109.
DENG Xiao-lin，LIU Wang-yu. In-plane impact dynamics analysis of sinusoidal honeycomb structure with negative poisson's ratio. JOURNAL OF VIBRATION AND SHOCK, 2017, 36(13): 103-109.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2017/V36/I13/103

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