摘要
建立多种车辆和护栏有限元仿真模型,运用多次碰撞试验数据对仿真模型计算结果进行比对,对采用有限元仿真方法评价护栏安全性能的可行性进行分析。研究结果表明,仿真计算可以得到车辆行驶轨迹、结构防护导向、乘员风险和动态变形等护栏安全评价的各项指标,仿真结果与试验结果一致,误差在10%以内,验证了建模方法的正确性,运用有限元仿真方法评价护栏安全性能具有较高可行性。强调运用评价护栏安全性能的仿真模型须通过碰撞试验校核,同时建议通过法规和准则对从事护栏评价CAE工程师进行职业管理。
In order to do feasibility analysis of barrier safety evaluation with finite element simulation method, various vehicle and barrier finite element simulation models were set up and compared to multiple physical test data. The results indicated that all barrier safety indexes, such as, test vehicle trajectory, safety barrier performance, occupant risk and barrier dynamic deformation can be extracted from the simulation results, the reliability of the simulation models are verified because the crash results in simulation are coincident with those in test and the errors are less than 10% between them, and the feasibility of barrier safety evaluation with computer simulation methods is proved. The concept that the simulation model to evaluate barrier safety performance should be checked with crash tests was stressed and the suggestion using regulations and guidelines to manage CAE engineers conducting barrier simulation evaluation was presented.
出处
《振动与冲击》
EI
CSCD
北大核心
2011年第1期152-156,共5页
Journal of Vibration and Shock
基金
公路护栏安全性能评价标准修订项目(JTGF83)
关键词
护栏
安全评价
计算机仿真
有限元分析
碰撞试验
barrier
safety evaluation
computer simulation
finite element analysis
crash test
