中央分隔带半刚性护栏的拓扑优化  

Topological Optimization of Central Median Semi-rigid Guardrail

作　　者：雷正保[1] 阳彪[1] 肖林辉[1] 

机构地区：[1]长沙理工大学汽车与机械工程学院,长沙410004

出　　处：《武汉理工大学学报（交通科学与工程版）》2015年第3期459-462,共4页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国家自然科学基金项目资助(批准号:51175050)

摘　　要：根据双波护栏的基本设计尺寸,建立拓扑区域.利用耐撞性拓扑优化方法,对梁板设计域进行了不同工况下的拓扑优化分析,并得出了中央分隔带护栏梁板拓扑构型;针对所提取的近"倒U"形梁板拓扑构型进行了仿真验证分析.分析结果表明:在0.2质量分数下的梁板拓扑构型的车辆碰撞后运行轨迹、车体加速度等护栏安全评价指标与试验结果一致,均小于评定标准的20 g,满足碰撞安全性标准要求.According to the basic design size double of wave guardrail ,was established the topological region .The beam topological configuration was acquired by several crashworthiness topology optimi‐zation analyses in the beam design domain .The crashworthiness verification analysis of new configu‐ration in “Inverted U” type was gained under the simulation software .The analysis results indicated that the beam topological configuration in 0 .25 mass fractions was achieved the the results showed a consistent trajectory ,body acceleration guardrail safety evaluation and test results calculated after ve‐hicle collision simulation ,and met the requirements of the acceptance criteria .

关 键 词：中央分隔带护栏 元胞自动机 耐撞性 拓扑优化 

分 类 号：U467.14[机械工程—车辆工程]