基于流固耦合的罐式半挂列车液体模型构建研究  

Construction and Simulation of Liquid Model of Tank Semi-Trailer Based on Fluid Structure Coupling

作　　者：周淑文[1] 王春晖 张国胜[2] 杨贵军 张思奇[3] ZHOU Shuwen;WANG Chunhui;ZHANG Guosheng;YANG Guijun;ZHANG Siqi(School of Mechanical Engineering and Automation,Northeastern University,Shenyang Liaoning 110819,China;Research Institute of Highway Ministry of Transport,Beijing 100088,China;School of Transportation and Surveying and Mapping Engineering,Shenyang Jianzhu University,Shenyang Liaoning 110168,China)

机构地区：[1]东北大学机械工程与自动化学院,辽宁沈阳110819 [2]交通运输部公路科学研究院,北京100088 [3]沈阳建筑大学交通与测绘工程学院,辽宁沈阳110168

出　　处：《交通节能与环保》2022年第2期43-47,51,共6页Transport Energy Conservation & Environmental Protection

基　　金：中央级公益性科研院所基本科研业务费专项资金项目(2021-9036a)。

摘　　要：为研究罐式半挂车行驶过程中由于液体晃动而导致的车体受力情况,本文基于流固耦合理论,建立等效力学模型近似模拟液体晃动,可以在保证模型准确描述罐内液体受力变化的前提下,简化计算过程。本文首先根据能量守恒定律和牛顿第二定律建立起流固耦合方程,为提高求解效率,将其转化为矩阵求解方式;其次通过对不同充液高度的非满载罐中液体的晃动和液体质心运动轨迹进行研究,建立椭圆摆的运动方程,得到罐内液体质心运动的等效机械运动模型的动态轨迹;最后采用MATLAB的ODE算法进行求解,得到振荡频率和振幅的关系,为罐式半挂车侧翻特性及预防控制研究奠定了基础。In order to study the force of the vehicle body caused by the liquid sloshing during the driving of the tank semi-trailer,based on the fluid-structure coupling theory,this paper establishes an equivalent mechanical model to approximate the liquid sloshing,which can ensure that the model can accurately describe the liquid force in the tank and under the premise of changes,simplify the calculation process. In this paper,the fluid-solid coupling equation is first established according to the law of conservation of energy and Newton’s second law. In order to improve the solution efficiency,it is transformed into a matrix solution method. Trajectory research,the equation of motion of the elliptical pendulum is established,and the dynamic trajectory of the equivalent mechanical motion model of the liquid center of mass in the tank is obtained. Finally,the ODE algorithm of MATLAB is used to solve the problem,and the relationship between the oscillation frequency and the amplitude is obtained.

关 键 词：罐式半挂列车 流固耦合 液体晃动 ODE算法 椭圆摆 

分 类 号：U469.61[机械工程—车辆工程]