摘要
客车骨架早期局部开裂问题影响客车的可靠性和耐久性。通过Patran和Nastran软件对某客车车身骨架进行了多种工况下的有限元强度分析。分析结果表明:该客车在各种工况下应力集中的位置基本一致,且与客车发生早期开裂的位置吻合,主要发生在前后悬架钢板脚附近以及侧窗立柱与上下梁的焊接处。根据强度分析结果对客车结构薄弱处进行改进优化,使其达到使用要求,提高了客车的可靠性和耐久性。
Early local cracking of bus body frame affects its reliability and durability. In this paper, the strength calculation of bus body frame was discussed under many kinds of operating modes through Patran and Nastran software. The analysis result indicates that concentrated stress area is almost same under different operating modes and is consistent with the position of the early cracking. It mainly ap-pears near by the foot plate of front and rear suspension and the welding area of windows column and beam. According to the results of strength analysis,the weaknesses of the bus structure are improved on the base of analysis results and make it optimize the requirements,and improve the reliability and durability of the bus.
出处
《重庆理工大学学报（自然科学）》
CAS
2014年第11期1-5,共5页
Journal of Chongqing University of Technology：Natural Science
关键词
客车车身骨架
有限元
强度分析
改进优化
bus body frame
finite element
strength analysis
structural optimization
