轻型货车前纵梁碰撞吸能特性分析  

Energy-Absorbing Characteristics of Front Rail of Light-Duty Truck in the Course of Collision

作　　者：都雪静[1] 王占宇[1] 陈琳[2] 陆昊[1] 

机构地区：[1]东北林业大学交通学院,黑龙江哈尔滨150040 [2]国家汽车质量监督检验中心(襄阳),湖北襄阳441004

出　　处：《重庆交通大学学报（自然科学版）》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)

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.

关 键 词：车辆工程 正面碰撞 轻型货车 吸能特性 

分 类 号：U463.32[机械工程—车辆工程]