基于正交试验汽车侧面碰撞结构改进设计.pdf

2010中国汽车安全技术国际研讨会 基于正交试验的汽车侧面碰撞结构改进设计 马春生，张金换，胡经耀，黄世霖1 (清华大学汽车安全与节能国家重点实验室，北京100084) 摘要：通过结构改进设计可以有效提高汽车侧面碰撞乘员保护性能。采用PAM—CRASH软件建市了某轿车的整车侧面碰撞有 限元模璎，并通过仿真计算和试验结果的比较验证了模型的有效性。对原午的侧嘶碰撞特性进行了分析，提出了初步的改进 措施，采用试验设计方法对结构参数进行了优化设计。结果表明优化设计后该车的侧面碰撞安全性显著提高。正交试验是进 行汽车碰撞结构改进设计的有效方法。 关键词：正交试验，侧面碰撞，改进设计，仿真 Structure forAutomotiveSide Basedon ImprovementDesign Impact 0rthogonalExperiment Ma Jinhuan，Hu Shilin Chunsheng,ZhangJingyao，Huang ofAutomotiveand ofAutomotive (StateKeyLaboratory SafetyEnergy,DepartmentEngineering,TsinghuaUniversity,Beijing 100084，China) Abstract：The forside canbe muchstructure whole occupantprotectionperformanceimpact improvedby improvementdesign．The was was vehiclefinite forside withthesoftwareofPAM—CRASH．TheFEmodelvalidated element(FE)modelimpactdeveloped by thesimulationandtestresults．The draft was basedonthe ofthe vehicles comparing improvementdesignproposed analysisoriginal crash inside structure were resultsindicate optimized performanceimpact．Theparameters usingonhogonalexperimentdesign．The thatthecrash forside isprettyimproved．The isaneffectivemethodforstructure safetyperformanceimpact onhogonalexperiment invehicle improvementdesign impact． impact；improvement Keywords：orthogonalexperiment；side design；simulation 汽车侧面碰撞是发生频率高、致死率和致伤率都较大的交通事故形式，事故统计数据表明世界上大约 30％的严重交通事故都与侧面碰撞有关【l】。为增加侧面碰撞发生时对乘员的保护，各国相继制定了侧面碰