J4 ›› 2008, Vol. 19 ›› Issue (3): 374-377.
• 车辆工程 •
Shi Yuliang;Zhu Ping;Shen Libing;Lin Zhongqin
A method of redesigning the front rail using tailor-welded blanks was studied, in order to reduce the weight of front rail and enhance its crashworthiness on conditions of satisfying strength and stiffness requirements. By CAE analysis of stress distribution in the rail in the case of self-weight, the number of parent sheets and weld line distribution were determined. By establishing the constraint inequalities of strength, bending stiffness and torsion stiffness, the thickness determination was performed. The full-width frontal impact simulation of the whole car after redesign in the front side rails shows that the front rail of tailor-welded blanks has a better crashworthiness in comparison of original design, while it has a lightweight effect of 17.7%.
finite element method
施欲亮;朱平;沈利冰;林忠钦. 汽车前纵梁的拼焊板轻量化设计研究[J]. J4, 2008, 19(3): 374-377.
Shi Yuliang;Zhu Ping;Shen Libing;Lin Zhongqin. Lightweight Design Study of Automotive Front Rail with TWB Structure[J]. J4, 2008, 19(3): 374-377.