CAJ | 학술논문

根据多体动力学在Adams环境中建立了某款工程车辆的模型,以汽车地面力学中Bekker承压模型和Jo-nasi剪切模型为基础建立了刚性轮和弹性轮模型以模拟轮胎地面接触,并将轮胎地面接触模型用S函数描述,以提高仿真运行速度和计算精度.最后借助Adams-Matlab联合仿真工具,对车辆与松软地面相互作用问题进行了仿真计算,研究了地面特性对车辆行驶平顺性的影响.仿真计算结果表明,同车辆行驶速度、路面不平度和载荷一样,地面土壤力学特性对车辆行驶平顺性也有重要影响.该联合仿真模型能将地面变形因素考虑到车辆平顺性分析中,为非公路车辆悬架优化设计提供了思路和研究基础.
근거다체동역학재Adams배경중건립료모관공정차량적모형,이기차지면역학중Bekker승압모형화Jo-nasi전절모형위기출건립료강성륜화탄성륜모형이모의륜태지면접촉,병장륜태지면접촉모형용S함수묘술,이제고방진운행속도화계산정도.최후차조Adams-Matlab연합방진공구,대차량여송연지면상호작용문제진행료방진계산,연구료지면특성대차량행사평순성적영향.방진계산결과표명,동차량행사속도、로면불평도화재하일양,지면토양역학특성대차량행사평순성야유중요영향.해연합방진모형능장지면변형인소고필도차량평순성분석중,위비공로차량현가우화설계제공료사로화연구기출.
A kind of construction truck model is built in Adams based on multi-body dynamic theory.The rigid and elastic wheels of tire-soil contact models are proposed based on the Bekker pressure model and the Jonasi shear soil model, and they are described in the form of S-function to enhance the calculation efficiency and simulation accuracy.Finally, the interaction of truck and soil is simulated by Adams-Matlab co-simulation to study the influence of soft terrain on the ride comfort of vehicles.The co-simulation results reveal that the terrain properties have a great influence on the ride comfort of vehicles as well as driving speed, road roughness and cargo weight.This co-simulation model is convenient for adding the factor of terrain deformation to the analysis of vehicle ride comfort.It can also be used to optimize suspension system parameters especially for off-road vehicles.