基于2024版C-NCAP FRB工况的某乘用车平台车型结构耐撞性优化  

Optimization of Structural Crashworthiness of a Passenger Vehicle Platform Model Based on the 2024 Version of C-NCAP FRB Trail

作　　者：虞科炯 周枫[1] YU Kejiong;ZHOU Feng

机构地区：[1]泛亚汽车技术中心有限公司,上海201208

出　　处：《上海汽车》2024年第5期16-22,共7页Shanghai Auto

摘　　要：正面100%重叠刚性壁障(FRB)工况是考核整车被动安全性能的重要测试之一。针对2024版C-NCAP中的FRB工况,对某乘用车平台的两款不同车型开展结构耐撞性研究。通过分析Base状态的变形模式、加速度响应曲线及结构入侵指标等结果,给出了耐撞性优化方向。从区分设计前端吸能盒、规划能量吸收与传递路径、引导结构产生理想变形模式3个方面,提出了具体的优化方案。结果表明:优化后PHEV和ICE车型的有效加速度均明显降低,结构侵入值未见超标,能够较好地满足2024版C-NCAP五星评价要求。The 100%overlap rigid barrier(FRB)trail is one of the important tests for evalu⁃ating the passive safety performance of the vehicle.In response to the FRB test conditions in the 2024 version of C-NCAP,a study on the structural crashworthiness of two different vehicle models on a cer⁃tain passenger car platform is conducted.By analyzing the deformation modes,acceleration response curves,and GAST of the Base state,the direction of crashworthiness optimization is provided.Spe⁃cific optimization solutions are proposed from three aspects:distinguishing the design of the front crush box,planning the energy absorption and transfer paths,and guiding the structure to generate ideal deformation modes.The results show that after optimization,the effective accelerations of PHEV and ICE are significantly reduced,the structural intrusion values are within limits,and they can well meet the five-star rating requirements of the 2024 version of C-NCAP.

关 键 词：C-NCAP规程 正面碰撞 FRB工况 耐撞性 结构优化 

分 类 号：U463[机械工程—车辆工程]