摘要
基于扁壳理论推导了在集中载荷作用下,双曲扁壳的抗凹刚度的表达形式。根据扁壳中心局部产生微凹痕的临界外载荷作为汽车扁平类零件在轻量化过程中的一项重要指标。并通过仿真分析,验证了轻量化零件的耐撞性。
Automobile body lightweighting and crashworthiness are two important objectives of car body design.In this paper,based on the shallow shell theory,the expression of indentation stiffness of double curvatured shallow shell is drawn under the concentrated load condition.The critical loads resulting in the local trivial dent in the center of the shallow shell is regarded as the important index for the lightweight of the automobile parts.This rule is applied to the lightweight design of bumper system by using high strength steel instead of mild strength steel.The crashworthiness simulation of the lightweight part proves the validity of the light weighting process.
出处
《机械设计与研究》
CSCD
2004年第5期74-76,共3页
Machine Design And Research
关键词
扁壳理论
抗凹刚度
轻量化
shallow shell
indentation stiffness
lightweight
crashworthiness
