Numerical and experimental investigations on the expansion tube energy absorber
Expansion tube energy absorber is of interest in bumper device on the spacecraft, for example the seat-bumper and its crushing characteristics have shown an excellent performance.This paper contributes to the analysis and investigation of the crushing characteristics of the expansion tube energy absorber, by simulating the response of the 2Al2T4 expansion tube subjected to quasi-static axial compressive loading, using the LS-DYNA finite element code.Corresponding tests were conducted to serve as comparison purpose.Satisfactory level of agreement between simulation and testing results was obtained regarding the main characteristics of the tested expansion tubes such as peak compressive load, energy absorption and the overall compressive response.Formula of the crushing force deduced using plastic mechanic theory was checked.Impact model was also constructed and dynamic simulations were performed to investigate the axial impact response of the expansion tube energy absorber.The simulation results of quasi-static and dynamic compression response of the expansion tube are very similar.
Expansion tube Energy absorption Crashworthiness Quasi-static finite element simulation Dynamic finite element simulation
He Mao Changjie Luo Kai He Ruxu DU
Shenzhen Institutes of Advanced Technology,Chinese Academy of Sciences,Shenzhen,China Institute of Precision Engineering,The Chinese University of Hong Kong,Shatin.N.T,Hong Kong
国际会议
the 3nd International Conference on Digital Manufacturing & Automation (第三届数字制造与自动化国际会议(ICDMA 2012))
桂林
英文
115-120
2012-08-01（万方平台首次上网日期，不代表论文的发表时间）