文档介绍：??????????????????????????????????????????????????????????????傦?????????????????????????????????????????????????????僘?????????а???????????????к??????? ???????????????僘????????а?????о?/ ????僘???/ ????僘??亦?僘????а????????????僘??????????: ??????????????????? Abstract In the bus structure, the body is bearing unit and functional unit. As bearingunit, body in the passenger car driving to pressure from roads and other plex load role. Car many important ponents are body for thecarrier, so the body in the whole bus system occupies very important position, thestrength and stiffness of the direct influence on the bus service life and a functional unit, the body should provide the driver with convenient workingenvironment, for the crew to fortable riding environment, protectthem from bus when exercising vibration, noise, exhaust gas invasion and outside harsh climate; in the traffic accident, reliable body structure and occupant protection system helps to reduce the crew and pedestrian injuries caused by. Inrecent years, with the development of society and the improvement of economic Key Words:analysis Coach bus, Semi-integral body, Design, Finite element ???1ㄐ??.............................................................................................4 ?ウ??.....................................................................................4 ?ウ??.....................................................................................5 UG???????................................................................5 ????????ウ??..........................................................6 ?????ウ?????..........................................................7 ?2 ㄐ???????..........................................................................8 ?????????..................................................................8 ??????..............................................................................9 ?????????.............................