汽车乘员护栏耦合碰撞系统模型及安全性仿真

《汽车乘员护栏耦合碰撞系统模型及安全性仿真》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、机床与液压Jun．2012HydromechatronicsEngineeringVo1．40No．12DOI：10．3969／j．issn．1001-3881．2012．12．010Automobile--Occupant--GuardrailCouplingCollisionSystemModelandSafetyPerformanceZHANGYong，OUJian，DENGGuohongChongqingAutomobileInstitute，ChongqingUniversityofTechnology，Chongqing400054，ChinaAbs

2、tract：ToimprovethecollisionresistanceofguardraiI，theideaImotionruleofautomobileandcollision·-proofmechanismofguardrailisstudiedinprocessofthatautomobilecolideswithguard·-raiI．InLS-DYNAsoftwareplatform．basedonthestructureparametersofautomobileandSafetyPerformanceEvaluationStandardsofE

3、xpresswayGuardraiI．thefiniteelementmodelof“auto—mobile-occupant-guardrail”collisioncouplingsystemisestablished．Collisionsimulationresultshowsthat，theguardrailabsorbs62．2％kineticenergybydeforming，whichplaysafavorableroleinguiding．Thedepa~ureangleofautomobileis8．2。，andthesecondawaccide

4、ntcouldbeavoidedefectively．Themaximumtransversaldeformationofguardrailis750mm：dummy’sheadperformanceindexHPCis508；dummy’schestperformanceindexTHPCis25．2mm；dummy’slegperformanceindexFPCis1．15kN；alIoftheseperformanceindexesaresmalerthanstandardvaluedefinedintheregulation．sotheoccupantw

5、ilInotbeinjuredwhentheauto—mobilecollideswiththeguardrail．Keywords：automobile，guardrail，collision，coupling，finiteelementInthisway，itcanbeensuredthatroadissafefromthe1．Introductiontechnologyside，evenifcollisionaccidentoccurs，theseverityofaccidentcanbeloweredfurthest，andsafetyInrecenty

6、ears．tramcsafetyhasbecomeseriousofoccupantcanbeguaranteed[2]dimcultyallaroundtheworld．Statisticdatashowthat『1]，inChina，about45％trafficaccidentson2．Automobile-occupant-guardrailcouplingcommonarterialhighwayarecausedbyautomobilescollisionsystemfiniteelementmodelrunofthehighway；onexpres

7、sway，about30％traf-ficaccidentsarecausedbyautomobilesrunoffthe2．1．FiIIiteelementmodelofautomobilehighway．Proportionofseriousvirulenttrafficacci．dentsishigherthan62％ofthiskindofaccidents．Toreducethecomputingtimeandensurethere—Animportantreasonfortheseaccidentsisthattheliabilityofsimula

8、tionresuts．t