Design and Crashworthiness of Novel Energy-Absorbing Box Filled with the3D Negative Poisson's Ratio Structure

LU Huan; WANG Xiaopeng; CHEN Tianning

doi:10.7652/xjtuxb202410017

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Design and Crashworthiness of Novel Energy-Absorbing Box Filled with the3D Negative Poisson's Ratio Structure

更新时间：2025-07-28

- Design and Crashworthiness of Novel Energy-Absorbing Box Filled with the3D Negative Poisson's Ratio Structure
- Vol. 58, Issue 10, Pages: 188-198(2024)
- 作者机构：
  
  1. 西安交通大学机械工程学院,西安,710049
  2. 机械结构强度与振动国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202410017
  CLC： TH122
- Online First：10 October 2024，
  
  Published：2024
- 稿件说明：
移动端阅览
LU Huan, WANG Xiaopeng, CHEN Tianning. Design and Crashworthiness of Novel Energy-Absorbing Box Filled with the3D Negative Poisson's Ratio Structure[J]. 2024, 58(10): 188-198.
DOI：

LU Huan, WANG Xiaopeng, CHEN Tianning. Design and Crashworthiness of Novel Energy-Absorbing Box Filled with the3D Negative Poisson's Ratio Structure[J]. 2024, 58(10): 188-198. DOI： 10.7652/xjtuxb202410017.

摘要

针对现有吸能盒结构形式单一、缓冲吸能效果有限的问题

在现有研究的基础上

将3D负泊松比结构填充到薄壁圆管中设计一种填充圆管型吸能盒

探索汽车吸能盒结构的新构型设计

改善吸能盒的缓冲吸能性能。首先

建立了3D负泊松比结构填充方管和圆管型吸能盒的几何模型

利用落锤冲击实验对3D打印加工的吸能盒样件进行了低速冲击

并建立了结构的低速冲击有限元模型

研究结果表明

结构的落锤实验结果与低速冲击仿真结果吻合较好

证明了结构低速冲击有限元模型的准确性; 随后

基于有限元模型

对比分析了填充型方管、填充型圆管和原始方管吸能盒的耐撞性能

研究发现

相较于原始方管吸能盒和填充方管型吸能盒

填充圆管型吸能盒具有更低的初始峰值力、更高的平均碰撞力

综合耐撞性能更优异; 最后

结合响应面方法和NSGA-Ⅱ算法

对填充圆管型吸能盒的耐撞性进行多目标优化

优化结果表明

优化后吸能盒的比吸能提高了14.7%

初始峰值应力降低了18.5%

综合耐撞性能得到了明显改善。该研究为负泊松比结构在汽车吸能盒上的应用探索提供了新的思路。

Abstract

For the single structural form and limited buffering energy absorption capacity of existing energy-absorbing boxes

a filled circular tube energy-absorbing box is designed by filling the 3D negative Poisson's ratio structure into a thin-walled circular tube based on the existing research to explore the new structural design and improve the buffering energy absorption capacity of automobile energy-absorbing boxes. Firstly

the geometric model of the square tube and circular tube energy-absorbing boxes filled with the 3D negative Poisson's ratio structure are established

the sample processed by 3D printing is subjected to low-velocity impact in the drop hammer impact test

and the low-velocity impact finite element(FE)model of the structure is established. The research results show that the drop hammer test results of the structure were in good agreement with the low-velocity impact simulation results

which proved the accuracy of the FE model. Subsequently

based on the FE model

the crashworthiness of the filled square tube

filled circular tube and original square tube energy-absorbing boxes are compared and analyzed. It is found that compared with the original square tube energy-absorbing box and the filled square tube energy-absorbing box

the filled circular tube energy-absorbing box exhibited a lower initial peak force

a higher average collision force

and a better comprehensive crashworthiness performance. Finally

the response surface method and NSGA-Ⅱ algorithm are applied to perform a multi-objective optimization on the crashworthiness of the filled circular tube energy-absorbing box. The optimization results show that the specific energy absorption of the optimized energy-absorbing box increased by 14.7%

and the initial peak force decreased by 18.5%

which indicated that the comprehensive crashworthiness performance was significantly improved. This study can provide a new idea for the application of negative Poisson's ratio structure in automobile energy-absorbing boxes.

关键词

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