汽车工程学报2025，Vol.15Issue(4)：489-496,8.DOI:10.3969/j.issn.2095-1469.2025.04.06
某SUV车型行人腿部碰撞安全性的仿真分析与改进设计
Simulation and Design Improvements to Enhance Pedestrian Leg-Impact Safety for an SUV Model
摘要
Abstract
In this paper,based on the 2024 C-NCAP evaluation regulations,a finite element model of an SUV front end impacting a pedestrian's leg was established using ANSA software.Numerical simulations were carried out using LS-DYNA,and test data were employed to validate the model.Evaluation of the injury values obtained from the simulation and testing shows that the thigh bending moment and knee ligament elongation comply with the high performance limits of the 2024 C-NCAP,whereas the calf bending moment T1 does not.Further analysis shows that the lower front-end grille presses against the knee,occupies the X-direction energy-absorbing space,limits the deformation of the front bumper to absorb energy,and thus increases the calf bending moment.Two targeted structural improvements were made:the solid structure in the center of the energy-absorbing foam was replaced by an open-cell structure with a small groove at the upper end,and the license-plate mounting bracket was lowered by 10 mm along the X-direction.After these modifications,the calf bending moment T1 drops to 265.1 Nm,meeting the 2024 C-NCAP high-performance limit,and the thigh bending moment and the knee ligament elongation continue to satisfy the same criteria.关键词
2024版C-NCAP/SUV车型/行人腿部碰撞/结构改进/仿真验证/高性能Key words
version 2024 C-NCAP/SUV models/pedestrian leg impact/structural improvement/simulation verification/high performance分类
交通工程引用本文复制引用
刘森海,关永学,徐莉,李骏,袁杰,郭举..某SUV车型行人腿部碰撞安全性的仿真分析与改进设计[J].汽车工程学报,2025,15(4):489-496,8.基金项目
江西省重点研发计划项目(20232BBE50008):复杂场景下新能源汽车碰撞数字孪生关键技术 （20232BBE50008）
