液压与气动2025，Vol.49Issue(11)：29-39,11.DOI:10.11832/j.issn.1000-4858.2025.11.004
基于汽车模拟侧碰的液压缓冲器结构优化分析
Structural Optimization Analysis of Hydraulic Buffer Based on Automotive Simulated Side Impact
摘要
Abstract
The use of aluminum honeycomb as the energy-absorbing medium in automotive sideimpact simulation devices has inevitable drawbacks,including uncontrollable buffering performance,non-reusability and high cost.To improve the consistency,controllability,and reproducibility of tests,this study proposes a novel porous hydraulic buffer applied to the FMVSS 213a standard simulated side impact for child restraint systems.Based on the damping principle of the proposed device,a mathematical model and an AMESim simulation model of the automotive sideimpact process are established.Structural parameters designing of the buffer's pressure-relief orifices are optimized through simulation and subsequently validated by physical experiments.The results demonstrate that the designed 14-stage gradient pressure-relief orifice array,combined with a 0.1 mm annular clearance,can stably control the peak acceleration of the sliding seat within 24±1 G,which meets the required acceleration range of 18.5～25.5 G for the test.Furthermore,the relative velocity waveform between the sliding seat and the door assembly exhibits the desired characteristics-remaining stable initially and then linearly decreasing within the collision duration-satisfying the FMVSS 213a waveform requirements.The proposed optimized hydraulic buffer is reusable and reduces testing costs by more than 95％compared with aluminum honeycomb,demonstrating good potential for engineering applications.关键词
汽车模拟侧碰/液压缓冲器/AMESim仿真/动态特性Key words
automotive simulated side impact/hydraulic buffer/AMESim simulation/dynamic characteristics分类
机械工程引用本文复制引用
杨祥明,李志昌,高国彬,过峰,俞建峰,钱陈豪..基于汽车模拟侧碰的液压缓冲器结构优化分析[J].液压与气动,2025,49(11):29-39,11.基金项目
国家自然科学基金(51905215) （51905215）
江苏省研究生科研与实践创新计划(SJCX24_1348) （SJCX24_1348）
南京海关科研项目(2025KJ37) （2025KJ37）
