摘要
本文将辊冲成型工艺引入拖挂式房车底盘设计和制造。对标某典型拖挂式房车底盘,通过对高强度材料的连续成型,构造一体化的底盘纵梁,并做相应的结构改进,对比分析了两种底盘在满载弯曲和满载制动工况下的受力情况。结果表明:由于辊冲工艺可以实现变截面超长零件的加工和一次冲孔,这一优势带来的材料改进、结构改进和主要构件数量的减少,使底盘纵梁加工在实现轻量化的同时显著提升了生产效率和装配效率。此外,基于高强度板材的变截面纵梁,大大提升了结构的可设计性,进而使承载性能的显著提高成为可能。与某款额定载质量为1.4 t的对标底盘相比,结构优化后的底盘可以承受2.4 t的载荷,且此时两者的变形量相似。
In this paper,roll stamping technology is introduced into the design and manufacture of trailer chassis.Through continuous molding of high strength materials,an integrated chassis rail is constructed,and the corresponding structural improvement is made for a typical trailer chassis.The stress conditions of the two chassis under full load bending and full load braking conditions are compared and analyzed.The results show that because the roller punching process can realize the processing of ultra-long parts with variable section and one punch,the material improvement,structural improvement and the reduction of the number of main components brought by this advantage make the processing of chassis rail significantly improved in terms of production efficiency and assembly efficiency while realizing the lightweight.In addition,the variable section longitudinal beam based on the high strength sheet greatly improves the designability of the structure,which in turn makes it possible to significantly improve the bearing performance.Compared with the base plate with a fixed load mass of 1.4 t,the optimized chassis can bear the load of 2.4 t,and the deformation of the two is similar.
作者
靳春宁
高妍
高世哲
邹天下
刘洋
张智恒
Jin Chunning;Gao Yan;Gao Shizhe;Zou Tianxia;Liu Yang;Zhang Zhiheng(School of Automotive Engineering,Dalian University of Technology,Dalian 116024;Sinotruk Automotive Research Institute,Jinan 250100;School of Mechanical and Power Engineering,Shanghai Jiao Tong University,Shanghai 200241)
出处
《汽车工程》
EI
CSCD
北大核心
2023年第5期865-872,共8页
Automotive Engineering
基金
国家自然科学基金重点项目(U21A20165)
国家自然科学基金面上项目(52072057)资助。
