基于SPH粒子法的汽车高压油箱碰撞CAE计算分析  

CAE Analysis of Vehicle High Pressure Fuel Tank Collision Based on SPH Particle Method

作　　者：刘豪[1] 王康 徐莉[1] 关永学 付康 Liu Hao;Wang Kang;Xu Li;Guan Yongxue;Fu Kang

机构地区：[1]江铃汽车股份有限公司,产品研发总院,江西南昌330052 [2]江西省科技基础条件平台中心(江西省计算中心),江西南昌330003

出　　处：《时代汽车》2024年第10期184-186,共3页Auto Time

基　　金：江西省重点研发计划项目“复杂场景下新能源汽车碰撞数字孪生关键技术”(20232BBE50008)研究成果。

摘　　要：文章基于汽车车体结构、高压燃油箱及其周围零部件组成的子模型,采用LS-DYNA显式求解器,利用SPH 粒子技术,针对整车正面碰撞、侧面碰撞以及后面碰撞过程中,高压油箱周围变形以及其内部油液的晃动对油箱壳体的影响进行有限元模拟和研究。通过碰撞CAE计算分析,得出碰撞过程中油液晃动对油箱的撞击而产生的应力分布及变化过程,分析油箱的变形、应力、应变分布等情况,可以评估汽车在发生高速碰撞时油箱损伤、破坏情况。最终通过在某整车高速追尾CAE模拟中的应用,再现了油液SPH 粒子的有效作用。Based on the sub-model composed of vehicle body structure,high pressure fuel tank and its surrounding components,this paper uses LS-DYNA explicit solver and SPH particle technology to conduct finite element simulation and research on the infl uence of deformation around the high pressure fuel tank and the slosh of its internal oil on the tank shell during the frontal collision,side collision and rear collision of the vehicle.Through collision CAE calculation and analysis,the stress distribution and change process caused by the impact of oil sloth on the oil tank in the collision process are obtained.By analyzing the deformation,stress and strain distribution of the oil tank,the damage and destruction of the oil tank in high-speed collision can be assessed.Finally,through the application of CAE simulation of a vehicle high-speed rear-end collision,the effective effect of oil SPH particles is reproduced.

关 键 词：CAE计算 高压油箱 汽车碰撞 SPH粒子法 

分 类 号：U46[机械工程—车辆工程]