模型降阶驱动车身零部件侧面碰撞性能快速仿真验证方法

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主题词：车身零部件侧面碰撞 降阶模型 耐撞性优化 碰撞仿真

中图分类号： U467.1+4 文献标志码：A DOI：10.19620/j.cnki.1000-3703.20250561

ARapid Simulation Method for Crashworthinessof Body Partsunder SideImpacts Driven by Model Order Reduction

Zhai Mingyang，Cheng Chen， Tian Hongsheng，Xu Zhongwei，Mao Lizhong （BYDAuto Industry Company Limited，Shenzhen 518118）

【Abstract】Aiming at theproblemsof highcomputational costand loweficiency in the whole-vehiclecollision simulation，combiningthemodeldowgrading technologyandthebodypartsimulationstrategy，thispaperproposesanecient bodypart performance simulationand verificationmethod.Thekeycomponentsareplaced inthe body subsystem for crashworthinesssimulationverification，byplacingthebodyontherigidground，setingthecontactandfrictionfactors，and reproducing the motion atitudeof the whole vehicle toensure the simulation accuracy.Using shrinkageenvelope mesh to replace thenon-crash sideof thebodystructuresignificantlyreduces thenumberofcellmeshes，andachievesmodelorder reduetionandthecomputational eficiencyimprovement.Theresultsshow thatthesimulationeficiencyof thereduced-order modelhasbeeninereasedbyabout45times，whichenablestherapidverificationandoptimizationofthesimulationofkeybody parts while ensuring the simulation accuracy.

Key words：Body parts， Side impact，Reduced-order model， Crashworthiness optimization， rashsimulation

【引用格式】翟明洋，程晨，田洪生，等.模型降阶驱动车身零部件侧面碰撞性能快速仿真验证方法[J].汽车技术，2025（10）：1-9. ZHAI MY，CHENG C，TIANHS，etal.ARapid Simulation MethodforCrashworthiness of BodyParts underSide Impacts DrivenbyModel OrderReduction[J].Automobile Technology，2025（1O）：1-9.

1前言

在车身侧碰安全设计中，由于乘员舱侧面允许侵入距离相对较短，侧围缺少有效的吸能结构，导致车辆侧碰事故对乘员造成较大伤害[1-3]。（剩余11862字）