mba論文面向用戶的小批量中型客車正面碰撞安全性分析pdf

1、南京航空航天大學(xué)碩士學(xué)位論文面向用戶的小批量中型客車正面碰撞安全性分析姓名：王可申請學(xué)位級別：碩士專業(yè)：機(jī)械設(shè)計(jì)及理論指導(dǎo)教師：尹明德2011-03面向用戶的小批量中型客車正面碰撞安全性分析 II Abstract As one important problem of traffic safety problems,more and more attention has been attached to the automobile

2、safety problem in collision. To make the drives have wider field of view, large and medium-sized bus mostly use flat structure,which will lead to cockpit spaces become into energy absorbing area during frontal impact , c

3、onsequently, the passengers especially drivers will be severely damaged.The key to protect the drives from serious damage is that to limit the deformation of cockpit within a range so as to ensure the drives a certain ra

4、nge of safety operation area. This paper established the bus body skeleton geometric entities model and collision finite element model for one bus;then dissussed some application technique points of the collision simula

5、tion modeling ,for instance,to do data exchange at each stage of the finite element modeling by setting specific file format and comprehensively utilizing each software advantage such as CATIA,Hypermesh and FEMB;at last,

6、 Based on the explicit dynamic analysis program LS-DYNA,solved the frontal impact analysis, and evaluated the safety of the original bus during frontal impact . To a great extent,the collision endoergic design of bus str

7、ucture is equivalent to the collision endoergic design of thin-walled component .After accomplished studies on collision endoergic performance of the thin-walled straight beam component at diffeent cross section ,thickne

8、ss and partial weakening ,this paper designed the bus buffer endergonic structure , modified and improved the foreside structure of the bus body,and got good results.These work provide theoretical foundation for improvin