汽车碰撞波形梁半刚性护栏的简化计算  

Simplified calculation method for car crashing wave-beam semi-rigid barrier process

作　　者：许颖[1] 王鹏 

机构地区：[1]哈尔滨工业大学深圳研究生院,深圳518055 [2]广州荣柏生建筑工程设计事务所,广州510170

出　　处：《深圳大学学报（理工版）》2012年第4期364-370,共7页Journal of Shenzhen University(Science and Engineering)

基　　金：国家自然科学基金资助项目(50808054)~~

摘　　要：应用Newmark β法,对汽车碰撞半刚性护栏进行简化计算,解决碰撞过程中的非线性问题.分别对不考虑汽车转动和考虑汽车转动建立了简化模型,对汽车碰撞护栏进行时程分析.通过与LS-DYNA有限元模拟结果对比表明,考虑汽车转动的简化计算方法能较准确地对碰撞过程进行时程分析,帮助护栏设计人员更清楚了解碰撞过程和碰撞作用机理,有利于护栏的优化设计.A simplified calculation method on the basis of Newmark β is used to solve the nonlinear problem during the car crashing wave-beam semi-rigid barrier process. Time-history analysis is carried out by the simplified models with and without considering rotational in-plane degree-of-freedom. Compared with the LS-DYNA finite element simulation, it shows that the simplified calculation method can provide accurate time-domain analysis for the collision process by considering two translational and one rotational in-plane degree-of-freedom. The simplified calculation method helps the barrier designer to understand the collision process more clearly and make the barrier design more reasonable.

关 键 词：结构力学 波形梁半刚性护栏 NEWMARK β法 综合刚度 时程分析 

分 类 号：U417.1[交通运输工程—道路与铁道工程]