行驶于矿山软土路面的自卸车的减振系统协同优化  

Collaborative Optimization on the Vibration Attenuation System of Dump Truck Driving on Mine Soil Road

作　　者：张沙[1] 谷正气[1,2] 徐亚[1] 伍文广[1] 

机构地区：[1]湖南大学汽车车身先进设计制造国家重点实验室,长沙410082 [2]湖南文理学院,常德415000

出　　处：《汽车工程》2017年第6期702-709,共8页Automotive Engineering

基　　金：国家863计划(2012AA041805);中央财政支持地方高校专项资金项目(0420036017);湖南大学汽车车身先进设计与制造国家重点实验室自主课题项目(734215002)资助

摘　　要：大吨位矿用自卸车的行驶工况非常恶劣,严重影响车辆的行驶平顺性和操纵稳定性;同时,矿区路面为沙壤土路面,其变形对矿用自卸车的振动也有显著影响。针对此问题,本文中将同时考虑垂向、纵向和侧向相互作用的轮胎-地面接触模型与整车多体动力学模型集成,实现了在变形地面条件下的车辆地面耦合系统的建模,进行ADAMS/Simulink联合仿真,并通过实车道路试验验证了模型的准确性。结果表明,采用计及路面变形的动力学模型,仿真精度提高了7%以上。在此基础上,通过建立2阶响应面近似模型,利用多岛遗传算法对自卸车油气悬架和横向稳定杆参数进行协同优化,保证了在不破坏整车操纵稳定性的前提下,有效改善了车辆的行驶平顺性。The driving condition of large-tonnage mining dump truck is very severe, which seriously affects the ride comfort and handling stability of vehicle. Meanwhile,the road in mine area is sandy loam and its deforma-tion has also a great influence on the vibration of the truck. In view of these problems, a tire-soil contact model with consideration of interaction among vertical,longitudinal and lateral directions is built and integrated with multi-body vehicle dynamics model,realizing the modeling of vehicle-road coupling system under deformed terrain condition. Then an ADAMS/Simulink co-simulation is conducted with its correctness verified by real vehicle road test. The re-sults show that with the model considering the deformation of terrain,its simulation accuracy is increased by over 7%. On this basis,by setting up a second-order response surface surrogate model and using multi-island genetic al-gorithm ,a collaborative simulation on the parameters of hydro-pneumatic suspension and sway bar of the truck is performed. As a result,the ride comfort of the truck is effectively improved without deteriorating the handling stabili-ty of vehicle.

关 键 词：矿用自卸车 减振系统 联合仿真 协同优化 

分 类 号：U469.4[机械工程—车辆工程]