MPDB工况下某微型电动汽车碰撞相容性与耐撞性研究  

Research on Collision Compatibility and Durability of a Micro Electric Vehicle in MPDB Condition

作　　者：张旺 覃玄 王兴东 唐有镜 Zhang Wang;Qin Xuan;Wang Xingdong;Tang Youjing(School of Automotive Engineering,Hubei University of Automotive Technology,Shiyan 442002,China)

机构地区：[1]湖北汽车工业学院汽车工程学院,湖北十堰442002

出　　处：《湖北汽车工业学院学报》2024年第1期1-6,共6页Journal of Hubei University Of Automotive Technology

基　　金：国家自然科学基金(11502075)。

摘　　要：根据2020版E-NCAP要求,利用LS-DYNA进行某微型电动汽车在MPDB工况下的碰撞仿真分析。以SD、OLC、前围板最大侵入量、B柱加速度峰值为评价指标,改变保险杠刚度、前纵梁刚度和离地高度,分析车辆关键参数对相容性和耐撞性的影响。结果表明:较大的保险杠刚度、较小的纵梁刚度和更高的离地高度可保证微型电动车相容性较好,同时提高耐撞性。以此为依据,对微型电动车进行改进。改进后的微型电动车在兼顾相容性的同时,前围板最大侵入量降低了22.1%,B柱加速度峰值降低了1.1%。According to the 2020 edition E-NCAP requirements,LS-DYNA was used to simulate the collision of a certain micro electric vehicle under MPDB.Compatibility indexes SD,OLC,barrier break-down and durability indexes maximum front panel intrusion and peak B-pillar acceleration were includ-ed in the evaluation criteria.By varying bumper stiffness,front longitudinal beam stiffness,and ground clearance,the impact of these key vehicle parameters on collision compatibility and durability were ana-lyzed.The results indicate that higher bumper stiffness,lower longitudinal beam stiffness,and greater ground clearance contribute to better collision compatibility and improved durability for mini electric vehicles.Based on these findings,improvements were made to the mini electric vehicle.As a result,the modified vehicle maintains compatibility while reducing the maximum front bumper intrusion by 22.1%and decreasing peak B-pillar acceleration by 1.1%.

关 键 词：E-NCAP MPDB 微型电动车 碰撞相容性 

分 类 号：U467.14[机械工程—车辆工程]