基于材料和结构一体化的高速列车吸能部件的抗撞性分析和优化

With the acceleration of urbanization and the overall speed of China's railroad, how to improve the operation safety and reduce high-speed train accident loss, realize modern vehicles people-oriented design ideas, minimize drivers and passengers in the accident casualties has become one hot topic of railway vehicles research..How to ensure the safety of the body structure has also become a difficult problem. Anti-crashworthiness analysis of absorbing structure and material is brought forward here. A methodology of global sensitivity analysis(GSA) is proposed based on response surface method and Sobol method to evaluate the contribution of design parameters for vehicle nonlinear crash problem, and anti-crashworthiness analysis of the integrated design of structure and material of absorbing parts are also studied. Our aim is to give some good ideas for the design of the absorbing structure. The works consist of the following four parts: crash numerical simulation of high-speed train; anti-crashworthiness of absorbing structure/material; A methodology of global sensitivity analysis of anti-crashworthiness parameters; the integrated design of structure and material. .The large deformation crash Software PAM-CRASH is applied to do the numerical simulation and the optimization is carried on the basis of the Science and engineering computation software integration platform SIPESC, which is developed by the State Key Laboratory of structural analysis for industrial equipment of Dalian University of Technology. On the background of the rapid developing of China's railroad, Through crash simulation and optimization, the project study the problem of train safety and hope to give theoretical basis and advise to the factory production department.

随着我国铁路的全面提速，如何提高高速列车运行安全性，实现现代车辆以人为本的设计思想，最大限度减少司机和旅客在事故中的伤亡，成为轨道车辆研发的热点课题之一。如何保证车身结构安全性已成为设计者面临的难题，项目正是为解决此难题，开展吸能材料和结构的耐撞性分析，进行列车吸能结构耐撞性设计参数的全局灵敏度分析、开展吸能材料/结构一体化的耐撞性研究，希望能为列车吸能结构的设计做有益的探索。由四部分内容组成：高速列车碰撞数值仿真；吸能结构/材料的抗撞性设计；列车吸能结构的耐撞性参数的全局灵敏度分析方法研究；列车吸能结构的"结构-材料一体化"抗撞性设计。数值模拟基于大变形碰撞软件PAM-CRASH进行，优化基于大连理工大学自主研发的工程与科学计算软件集成平台SiPESC进行。项目研究铁路安全性问题，通过碰撞模拟和优化，能提炼出一种对吸能结构优化的有效的方法，用力学的方法和理论为吸能结构的设计提供依据。

随着我国铁路的全面提速，如何提高高速列车运行安全性，实现现代车辆以人为本的设计思想，最大限度减少司机和旅客在事故中的伤亡，成为轨道车辆研发的热点课题之一。如何保证车身结构安全性已成为设计者面临的难题，项目正是为解决此难题，开展吸能材料和结构的耐撞性分析，进行列车吸能结构耐撞性设计参数的全局灵敏度分析、开展吸能材料/结构一体化的耐撞性研究，希望能为列车吸能结构的设计做有益的探索。由下面五部分内容组成：高速列车碰撞数值仿真；吸能结构/材料的抗撞性设计；列车吸能结构的耐撞性参数的全局灵敏度分析方法研究；列车吸能结构的“结构-材料一体化”的抗撞性设计；吸能结构优化后的数值模拟。数值模拟基于大变形碰撞软件PAM-CRASH进行，优化基于大连理工大学工业装备重点实验室自主研发的工程与科学计算软件集成平台SiPESC进行。本项目以国内铁路大发展为背景，研究铁路安全性问题，希望研究成果为实际提供理论依据。