摘要
为分析某轻型货车前纵梁碰撞吸能特性,以碰撞理论为基础,运用CATIA软件建立前纵梁有限元分析模型,进行ANSYS/LS-DYNA模拟仿真。结果表明:车架前纵梁在碰撞中的变形吸收了大部分的能量,车架的最大变形位于纵梁的变截面处;纵梁的初速度为13.5 m/s,货车整备质量2.5 t条件下,碰撞发生2 ms后由于材料的塑性变形而产生峰值减速度,随后材料变形失效;车架前纵梁吸能特性与减速度相似,位于碰撞发生2 ms时出现吸能峰值。
Based on the collision theory,the energy-absorbing characteristics of light-duty truck are analyzed by establishing the finite-element model in CATIA and carrying out the simulation through the software ANSYS/LS-DYNA.The results show that most collision energy is absorbed by front rails of vehicle frame.The maximum deformation position is located in variable cross-section of vehicle frame.The deceleration peak caused by the failure of plastic deformation appears 2 ms later,when the initial collision velocity is 13.5 m/s and the whole equipment quality of truck is 2.5 t.Similar to the deceleration,the absorbing peak of vehicle frame appears 2 ms after the collision.
出处
《重庆交通大学学报（自然科学版）》
CAS
北大核心
2013年第3期525-528,共4页
Journal of Chongqing Jiaotong University(Natural Science)
基金
中央高校基本科研业务费专项资金(DL12CB03)
国家自然科学基金(51108068)
黑龙江省教育厅科技项目(11553025)
关键词
车辆工程
正面碰撞
轻型货车
吸能特性
vehicle engineering
frontal collision
light-duty truck
energy-absorbing characteristics
