NUMERICAL SIMULATION AND PREDICTION OF AXIAL IMPACT LOAD FOR THIN-WALLED CIRCULAR TUBE WITH INTERNAL AND OUTER STAGGERED GROOVES

DU JinYu; YANG XiaoXiang; WEI TiePing; GUO JinQuan

doi:10.16579/j.issn.1001.9669.2020.06.020

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NUMERICAL SIMULATION AND PREDICTION OF AXIAL IMPACT LOAD FOR THIN-WALLED CIRCULAR TUBE WITH INTERNAL AND OUTER STAGGERED GROOVES

更新时间：2022-09-22

- NUMERICAL SIMULATION AND PREDICTION OF AXIAL IMPACT LOAD FOR THIN-WALLED CIRCULAR TUBE WITH INTERNAL AND OUTER STAGGERED GROOVES
- Journal of Mechanical Strength Vol. 42, Issue 6, Pages: 1410-1416(2020)
- 作者机构：
  
  1. 福州大学石油化工学院
  2. 福州大学机械工程及自动化学院
  3. 泉州师范学院化学与材料学院
  4. 福建工程学院机械与汽车工程学院
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2020.06.020
  CLC：
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DU JinYu, YANG XiaoXiang, WEI TiePing, et al. NUMERICAL SIMULATION AND PREDICTION OF AXIAL IMPACT LOAD FOR THIN-WALLED CIRCULAR TUBE WITH INTERNAL AND OUTER STAGGERED GROOVES. [J]. 42(6):1410-1416(2020)
DOI：

DU JinYu, YANG XiaoXiang, WEI TiePing, et al. NUMERICAL SIMULATION AND PREDICTION OF AXIAL IMPACT LOAD FOR THIN-WALLED CIRCULAR TUBE WITH INTERNAL AND OUTER STAGGERED GROOVES. [J]. 42(6):1410-1416(2020) DOI： 10.16579/j.issn.1001.9669.2020.06.020.

摘要

薄壁圆管预设不同诱导结构能有效改善吸能特性。利用Ls-Dyna有限元软件模拟内外交错刻槽薄壁圆管受轴向冲击作用时的瞬态响应,对比了不同刻槽形式的薄壁圆管轴向冲击载荷特性;基于Hosseinipour提出的理论变形模型,推导了考虑应变率效应的平均载荷计算式,并通过引入几何参数预测峰值载荷。结果表明:相比薄壁直管,采用一定尺寸的内外交错刻槽薄壁圆管能有效降低62.24%的峰值载荷和56.26%的平均载荷;内外交错刻槽薄壁圆管受轴向冲击时的褶皱变形呈对称状,这与Hosseinipour所提变形模式一致;平均载荷,峰值载荷的预测结果与有限元结果一致。

Abstract

The properties of energy absorption can be effectively improved by different induced structures for thin-walled straight tube.Finite element software（LS-DYNA） was used to simulate the transient response of thin-walled circular tube with internal and outer staggered grooves under axial impact.Axial shock characteristics of force for thin-walled circular tubes with different grooves were compared.The mean load formula considering strain rate effect was derived based on Hosseinipour ’s deformation model.Geometric parameter was introduced to predict peak load.The results show that the thin-walled circular tube with internal and outer staggered grooves can reduce 62.24% peak load and 56.26% mean load compared with thin-walled straight tube.The fold deformation is symmetrical and consistent with Hosseinipour’s deformation model.The prediction results of mean load and peak load are consistent with the finite element results.

关键词

薄壁圆管刻槽平均载荷峰值载荷预测

Keywords

Thin-walled circular tubeGrooveMean loadPeak loadPrediction

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