轿车发动机罩静态刚度分析  

The static stiffness analysis of car engine hood

作　　者：朱天军[1,2] 孔现伟[1,2] 索乾[1,2] 张俊[1] 

机构地区：[1]河北工程大学机电工程学院,河北邯郸056038 [2]中国汽车技术研究中心,天津300300

出　　处：《河北工程大学学报（自然科学版）》2013年第2期87-91,共5页Journal of Hebei University of Engineering:Natural Science Edition

基　　金：国家自然科学基金(51205105);河北省自然基金资助项目(E2012402014)

摘　　要：针对轿车发动机罩性能设计要求,利用静态刚度试验测试系统,分别在抗凹、弯曲、扭转和侧向载荷工况下对轿车发动机罩进行了静态刚度试验。结果表明:发动机罩内板结构是影响抗凹刚度重要因素,刚度越小,残余变形越大;弯曲刚度和扭转刚度反映发动机罩整体性能;侧向刚度不满足目标值,需要对内板结构和铰链进行结构优化。该静态刚度试验对轿车发动机罩CAE仿真及概念设计改进提供了试验支持。This article proposes the engine hood performance design requirement.The car engine hood was tested in the dent resistance,bending,torsional and lateral load conditions though the test static stiffness system.The test results show as follows： The structure of the hood inner panel is the important factors to dent stiffness,the smaller stiffness,the residual deformation is larger;The bending and torsion stiffness reflect the overall performance of the engine hood;Lateral stiffness does not meet the target value,the structure of the hood inner panel and hinge are needed to optimize.Static rigidity provides a test support for CAE simulation and conceptual design improvements of the engine hood.

关 键 词：静刚度 抗凹刚度 弯曲刚度 扭转刚度 侧向刚度 

分 类 号：TH12[机械工程—机械设计及理论]