内凹-星型三维负泊松比结构设计及冲击吸能特性

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振动与冲击 ›› 2024, Vol. 43 ›› Issue (6) : 75-83.

论文

王玮婧1,2，张伟明2，郭孟甫3，杨金水1，马力2

作者信息 +

Design and impact energy absorption characteristics of concave-star three dimensional negative Poisson’s ratio structures

WANG Weijing1,2，ZHANG Weiming2，GUO Mengfu3，YANG Jinshui1，MA Li2

Author information +

文章历史 +

摘要

负泊松比结构因其反常的变形机制在缓冲吸能领域具有可观的应用前景。本文设计并表征了一种参数可调的新型负泊松比结构。采用理论和数值模拟相结合的研究手段，系统地研究了结构的静/动态力学性能和吸能特性。研究结果表明：新结构具有较好的力学性能和参数可调性。在静态压缩条件下，新型蜂窝结构具有更高的刚度和更优异的吸能性能，其比吸能值是内凹型蜂窝结构的2.64倍，是星型蜂窝结构的3.89倍。在动态冲击条件下，内凹-星型结构的吸能性能在低速时优于两种传统蜂窝结构（内凹和星型），在中高速时其吸能优势有所退化，与内凹型蜂窝结构相当，但远高于星型蜂窝结构。

Abstract

Negative Poisson’s ratio structures have considerable application prospects in the field of energy absorption due to their abnormal deformation mechanism. This paper designs and characterizes a novel negative Poisson’s ratio structure with adjustable parameters. The static/dynamic mechanical properties and energy absorption characteristics are systematically studied using a combination of theoretical and numerical simulation research methods. The research results show that the new structure has excellent mechanical properties and adjustable parameters. Under static compression conditions, the new structure has higher stiffness and better energy absorption performance, with a specific energy absorption value 2.64 times that of the concave honeycomb structure and 3.89 times that of the star-shaped honeycomb structure. Under dynamic impact conditions, the energy absorption performance of the concave-star structure is better than that of two traditional honeycomb structures (concave and star-shaped) at low velocity, and its energy absorption advantage degrades at medium and high velocities, which is equivalent to the concave honeycomb structure but much higher than the star-shaped honeycomb structure.

导出引用

王玮婧1,2，张伟明2，郭孟甫3，杨金水1，马力2. 内凹-星型三维负泊松比结构设计及冲击吸能特性[J]. 振动与冲击, 2024, 43(6): 75-83

WANG Weijing1,2，ZHANG Weiming2，GUO Mengfu3，YANG Jinshui1，MA Li2. Design and impact energy absorption characteristics of concave-star three dimensional negative Poisson’s ratio structures[J]. Journal of Vibration and Shock, 2024, 43(6): 75-83

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