基于多参数协同优化的THOR假人胸部伤害研究

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中图分类号：U461.91 文献标识码：A 文章编号：1003-8639（2025）11-0079-03

Research on THOR Dummy Chest Injury Based on Multi-parameter Collaborative Optimization

LiHong,Guan Yongxue,Zhang Xinhua,Wang Liangjie,Wu Xiaowei (Jiangling Motors Corporation Ltd.,Nanchang 33oo52, China)

【Abstract】Aiming at the problem that the chest compresson amount (54mm)of the THOR dummy far exceeded the high-performancelimit (35mm)ofC-NCAPin the Mobile DeformableBarierCrash(MPDB)testofacertaindeveloped vehiclemodel,thispaperconductsanoptimizationstudy.Firstly,basedonthesimulationmodelofthequalifiedrestraint system forbenchmarking,the safety belt end plate pretensioner and the dynamic locking tongue were added,reducing the chest pressure to 46.4mm and the damage by nearly 14% . To achieve the full score goal, five parameters such as theforcelimiting level of the seat belt were taken as design variables,with the goal of minimizing chest compression and the constraintof head injury (HIC≤400,3ms acceleration≤64g).Theradial basis function response surface model was constructed relying on the LSOPT software,and multi-arameter collaborative optimization was carried out in combination withthe genetic algorithm.Undertheoptimal parametercombination,the simulation verified thatthechest presure dropped to 32.73mm.Sensitivity analysis clearly indicates thatthe force limiting grade of the seat belt has the most significant impact on chest pressure.The final vehicle test showed that the chest pressre was 33.4mm, meting thefullscoretarget.Itconfirmedthattheoptimizationstrategy was effctiveandreliable,providingareference for he development of occupant protection in vehicle collisions.

【Key words 】THOR dummy; chest compression volume; collaborative optimization; sensitivity analysis

0 引言

随着汽车安全法规及消费者评价体系「如中国新车评价规程（China-New CarAssessmentProgram,C-NCAP）、欧洲新车评价规程（Euro-New Car AssessmentProgram,EuroNCAP）1日益严格，乘员保护性能要求不断提升。（剩余5557字）