摘要
汽车的座椅横梁在碰撞事故中起着保障乘客生存空间的重要作用,对其进行填充优化设计可以有效地提高车辆的安全性能。基于泡沫铝材料高比吸能与轻质的特点,设计了三组泡沫铝与薄壁钢管组成的复合结构,将其填充到汽车的座椅横梁中。通过对座椅横梁填充结构三点弯曲与轴向压缩的有限元模拟,研究了其抗弯曲与抗压缩性能,并对填充方案进行了优化。结果表明,填充座椅横梁的承弯和轴压承载性能相较于原件分别提升了193.6%和241.4%,并通过模拟车辆侧面碰撞证明了填充座椅横梁提高车辆耐撞性能的有效性。
Automobile seat crossbeams play an important role in ensuring the living space of passengers in a collision accident.The reasonable filling design may effectively improve the safety performance of automobiles.Based on the characteristics of high specific energy and light weight of aluminum foam,three different kinds of composite structure composed of foamed aluminum and thin-walled steel pipe were designed and filled into automobile seat crossbeams.The bending and compressive properties of the filled seat crossbeams under three-point bending and axial compression were studied by finite element simulation,and then the best filling scheme was optimized.The results show that the bending and axial bearing capacity of the filled seat crossbeam are improved by 193.6%and 241.4%respectively compared with the original one,and the effectiveness of filled seat crossbeams to improve the crashworthiness of vehicle is proved by the side impact simulation.
作者
张元瑞
汪高飞
张永亮
郑志军
叶坚
瞿元
虞吉林
ZHANG YuanRui;WANG GaoFei;ZHANG YongLiang;ZHENG ZhiJun;YE Jian;QU Yuan;YU JiLin(CAS Key Laboratory of Mechanical Behavior and Design of Materials,Department of Modern Mechanics,University of Science and Technology of China,Hefei 230026,China;Chery Automobile Co.,Ltd.,Wuhu100192,China)
出处
《机械强度》
CAS
CSCD
北大核心
2022年第1期140-147,共8页
Journal of Mechanical Strength
基金
新能源汽车暨智能网联汽车创新工程项目
国家自然科学基金项目(11772330)资助~~。
关键词
座椅横梁
泡沫铝
复合结构
有限元仿真
填充设计
Seat crossbeam
Aluminum foam
Composite structure
Finite element simulation
Filling design
