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An equivalent method for optimised design of nested tube energy absorber under space constraints

  • Lingyu Sun*
  • , Dingxin Leng
  • , Weiwei Chen
  • , Bin Xu
  • , Dayong Hu
  • , Xiaojie Wang
  • , Xiaojie Wang
  • , Jiangxia Shi
  • *Corresponding author for this work
  • Beihang University
  • Institute
  • University of Nevada, Reno

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper investigates the relationship of energy absorption between individual tube and nested tubes system in order to provide an equivalent design method for engineers. Firstly, both analytical and numerical methods were presented to analyze single tube under lateral point-loading compression, and the influences of material model and tube dimensions on energy absorption was studied. Secondly, an energy absorption system consisted of nested tubes was equivalently modeled by the combination of single tube in parallels or/and in series, and the resultant deformation and energy absorption were derived analytically by the present method. Several typical examples were verified numerically. It also discussed the relationship between structural effectiveness and solidity ratio for tube system and its components. Finally, a nested tubes system was optimized based on the requirements of installation space, crush distance and energy absorption capability.

Original languageEnglish
Title of host publicationTransportation Systems; Safety Engineering, Risk Analysis and Reliability Methods; Applied Stochastic Optimization, Uncertainty and Probability
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages25-30
Number of pages6
ISBN (Print)9780791854952
DOIs
StatePublished - 2011
EventASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011 - Denver, CO, United States
Duration: 11 Nov 201117 Nov 2011

Publication series

NameASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011
Volume9

Conference

ConferenceASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011
Country/TerritoryUnited States
CityDenver, CO
Period11/11/1117/11/11

Keywords

  • Energy absorption
  • Finite element analysis
  • Lateral compression
  • Nested tubes
  • Optimization

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