手性Kelvin点阵结构设计及抗冲击性能研究

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振动与冲击 ›› 2025, Vol. 44 ›› Issue (6) : 74-81.

冲击与爆炸

手性Kelvin点阵结构设计及抗冲击性能研究

续凯旋1,2，李恩奇3，周仕明1,2，李道奎*1,2

作者信息 +

Chiral Kelvin structure design and impact resistance study

XU Kaixuan1,2，LI Enqi3，ZHOU Shiming1,2，LI Daokui*1,2

Author information +

文章历史 +

摘要

手性点阵结构具有轻质化、高比刚度、高比强度等优点，同时具有较好的抗冲击性能。首先在Kelvin单胞结构基础上基于旋转杆件手性结构的变形机理设计了手性Kelvin单胞结构，其次通过冲击实验对比分析了手性对结构抗冲击性能的影响并对结构抗冲击性能提升的原理进行了揭示，最后研究了拓扑结构参数对结构抗冲击特性的影响。结果表明引入手性后结构的冲击应力峰值和平台应力指标有较大幅度提升，冲击应变能小幅度下降；手性Kelvin结构通过减小结构刚度和提高结构变形整体性的方式提升结构抗冲击性能；中心结构直径是影响结构抗冲击性能的主要因素，中等水平的中心结构直径和连接杆角度可以使手性Kelvin结构具有最好的抗冲击性能。研究拓展了三维手性点阵结构的构型范围，为手性Kelvin结构的参数化设计、力学分析以及在抗冲击方向的应用提供了参考。

Abstract

Chiral lattice structures offer advantages such as lightweight, high specific stiffness, and high specific strength, along with enhanced impact resistance. This research introduces a chiral Kelvin designed by leveraging the deformation mechanism of rotational rod chiral structure. Impact experiments are conducted to analyze the effect of chirality on impact resistance, revealing the underlying principles of the performance enhancement. The study examined how topological parameters influence the impact resistance. Results show that chirality significantly boosts peak impact stress and plateau stress, while marginally decreasing strain energy. The chiral Kelvin improves impact resistance by reducing stiffness and enhancing overall deformability. The central diameter is the primary factor of the impact resistance, with moderate values of the central diameter and the angle of the connecting rods being optimal for the best impact resistance in chiral Kelvin. The study broadens the design scope of 3D chiral lattice structures and provides references for parametric design, mechanical analysis, and impact-resistant applications of chiral Kelvin.

导出引用

续凯旋1, 2, 李恩奇3, 周仕明1, 2, 李道奎1, 2. 手性Kelvin点阵结构设计及抗冲击性能研究[J]. 振动与冲击, 2025, 44(6): 74-81

XU Kaixuan1, 2, LI Enqi3, ZHOU Shiming1, 2, LI Daokui1, 2. Chiral Kelvin structure design and impact resistance study[J]. Journal of Vibration and Shock, 2025, 44(6): 74-81

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