新型柔性护栏碰撞安全性仿真分析及实车验证  

Simulation analysis and real car validation for crashworthiness of a new flexible safe fence

作　　者：雷正保[1] 李丽红[2] 雷沐羲[3] 陈晨晨[2] 

机构地区：[1]长沙理工大学公路工程教育部重点实验室,长沙410004 [2]长沙理工大学道路灾变防治及交通安全教育部工程研究中心,长沙410004 [3]长沙理工大学土木工程与建筑学院,长沙410004

出　　处：《振动与冲击》2013年第22期28-31,共4页Journal of Vibration and Shock

基　　金：中国国家自然科学基金(51175050)

摘　　要：为研究新型柔性护栏碰撞安全性,据国内现有评价标准,通过建立车辆、护栏有限元仿真模型,结合多次实车碰撞试验,对新型柔性护栏碰撞安全性进行综合分析。基于VPG前处理软件,对所建"汽车-护栏"模型从车辆运动轨迹、车体加速度及护栏最大横向位移等方面分析车辆撞击新型柔性护栏的碰撞安全性;通过实车碰撞试验验证护栏对车辆的导向性。结果表明,仿真计算所得车辆运行轨迹、车体加速度等护栏安全评价指标与试验结果一致,满足法规评定标准要求。In order to identify the crashworthiness of a new flexible safe fence, methods were built by establishing a system of vehicle-fence FEA （ finite element analysis） computer simulation model and combining muhiple full-scale impact tests based on the current available evaluation standards. Furthermore, a model of vebicle-guardrail was set up based on virtual proving ground （VPG） pretreatment software, the safety of the impact between vehicle and neotype flexible safe fence was studied from the aspects of moving trajectory of vehicle, acceleration of vehicle and the maximum lateral displacement of guardrail etc. , secondly, a full-scale impact test was conducted for the guidance quality of guardrail to the tested vehicle. The test results indicated that the evaluation indexes of guardrail obtained from simulations agree well with the test results, and meat the requirements of the acceptance criteria.

关 键 词：新型柔性护栏 碰撞安全性 有限元仿真 实车碰撞试验 

分 类 号：U467.14[机械工程—车辆工程]