THEORETICAL STUDY ON THE CRASHWORTHINESS OF CORRUGATED TUBE

ZHANG Ping; MA Jian; NA JingXin

doi:10.16579/j.issn.1001.9669.2015.04.005

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THEORETICAL STUDY ON THE CRASHWORTHINESS OF CORRUGATED TUBE

更新时间：2022-09-22

- THEORETICAL STUDY ON THE CRASHWORTHINESS OF CORRUGATED TUBE
- Journal of Mechanical Strength Vol. 37, Issue 4, Pages: 676-681(2015)
- 作者机构：
  
  1. 长安大学汽车学院,陕西省道路交通智能检测与装备工程技术研究中心
  2. 吉林大学汽车仿真与控制国家重点实验室
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2015.04.005
  CLC：
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ZHANG Ping, MA Jian, NA JingXin. THEORETICAL STUDY ON THE CRASHWORTHINESS OF CORRUGATED TUBE. [J]. 37(4):676-681(2015)
DOI：

ZHANG Ping, MA Jian, NA JingXin. THEORETICAL STUDY ON THE CRASHWORTHINESS OF CORRUGATED TUBE. [J]. 37(4):676-681(2015) DOI： 10.16579/j.issn.1001.9669.2015.04.005.

摘要

针对波纹管受轴向压缩时的吸能特性,开展理论分析研究。考虑波纹管发生轴对称变形下的吸能机理,推导出平均压溃力的理论计算公式,从中可以看出它主要受到波纹管几何结构参数、材料性能参数和加载速度的影响。对比数值模拟结果,表明所建立的理论分析模型基本正确。基于理论模型和数值模拟研究了几何结构参数和加载速度的影响规律,随着波纹角的减小和波距的增大,平均压溃力呈加速增大的变化趋势;动态加载时平均压溃力约增大80%。研究工作为波纹管在结构耐撞性领域的应用提供了理论指导和设计帮助。

Abstract

The energy absorbing property of corrugated tube subjected to axial crushing was researched through theoretical analysis. In view of the energy absorbing mechanism for axisymmetric deformation mode,a calculation formula for the mean crush load was put forward. It shows that the mean crush load is mainly influenced by the tube geometric parameters,material properties and loading rate. The theoretical analysis method was proved with the simulation results. Based on the theoretical analysis and numerical simulation effects of geometric parameters on the mean crush load were studied. Decreasing corrugation angle or increasing corrugation wavelength leads to accelerated increasing the mean crush load. Compared to the quasi-static crushing tests,the mean dynamic crush loads increase at about 80%. This work provides valuable theoretical guidance and design reference for the application of corrugated tube to structural crashworthiness field.

关键词

耐撞性波纹管轴向压缩轴对称变形理论分析

Keywords

CrashworthinessCorrugated tubeAxial crushAxisymmetric deformationTheoretical analysis

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