LS-DYNA的改制型M2类车车身结构设计  

Body Structure Design of Reformed M2 Vehicle Based on LS-DYNA

作　　者：刘善英 吴磊 陈祖兴 黄志杰 LIU Shanying;WU Lei;CHEN Zuxing;HUANG Zhijie(Dongfeng Liuzhou Automobile Company Limited,Liuzhou 545006,China;Equipment Manufacturing College,Liuzhou Railway Vocational and Technical College,Liuzhou 545006,China)

机构地区：[1]东风柳州汽车有限公司,广西柳州545006 [2]柳州铁道职业技术学院装备制造学院,广西柳州545616

出　　处：《汽车实用技术》2022年第7期58-63,共6页Automobile Applied Technology

基　　金：广西高校中青年教师科研基础能力提升项目(2020KY44004)。

摘　　要：文章基于N1类多用途汽车车型,采用LS-Dyna软件对车身结构进行拓展优化仿真分析,评估优化前后侧翻结构强度。并根据优化结果开展实车试制与试验,验证优化方案可靠性。结果表明,优化前,B柱下部塑性折弯,前挡风玻璃横梁变形严重,优化后,车身变形显著降低,车身上部与生产空间距离达到92mm,安全裕度高;根据优化结果对实车进行改制加强,并按法规开展试验,结果显示车身至生存空间的最小距离为115 mm,达到仿真分析要求,满足法规强度;通过仿真分析对N1类多用途汽车车型进行结构优化,可针对性加强车身,从而达到GB—17578《客车上部结构强度要求及试验方法》法规要求,经济、可靠。Based on the N1 type multi-purpose vehicle model, this paper uses LS-Dyna software to carry out an extended optimization simulation analysis of the body structure to evaluate the strength of the optimized front and rear rollover structures;and according to the optimization results, real vehicle trial production and tests are carried out to verify the reliability of the optimization scheme;the results show that, before the optimization, the lower part of the B-pillar was plastically bent, and the front windshield beam was seriously deformed. After the optimization, the body deformation was significantly reduced, and the distance between the upper body and the production space reached 92 mm, with a high safety margin;according to the optimization results, the actual vehicle was restructured and strengthened, and carry out tests according to regulations. The results show that the minimum distance from the car body to the living space is 115mm, which meets the requirements of simulation analysis and meets the strength of regulations. GB—17578 Strength Requirements and Test Methods of Passenger Car Superstructure regulations, economical and reliable.

关 键 词：M2类车 仿真分析 结构优化 车身结构设计 实车验证 

分 类 号：U463[机械工程—车辆工程]