非公路矿用宽体自卸车行驶性能仿真分析

发布时间：2019-04-24 01:50

【摘要】：本文是以吉林大学与厦门厦工重工有限公司的合作项目“XGQ3650矿用自卸车车架研究”为依托，，针对非公路矿用宽体自卸车载重量大、工作时间长、实验成本高、无行业标准等特点，运用多体动力学、理论力学、材料力学等理论，对该非公路矿用宽体自卸车的通过性、操作稳定性以及平顺性进行了分析。并将研究成果应用于实际工程中，为非公路矿用宽体自卸车的设计与改进提供了一定的理论依据与技术支持。首先，针对对仿真结果影响较大的钢板弹簧、车架以及路面进行了研究。应用美国汽车工程学会推荐的钢板弹簧三连杆设计标准建立了前后钢板弹簧模型。考虑到车架变形对仿真结果的影响，将车架进行柔性化处理。另外，利用正弦叠加原理建立了各种实验路面。建立包括前悬架系统、后悬架系统、转向系统、柔性车架、驾驶室、路面等在内的整车刚柔耦合模型。将所建立模型的仿真结果与实验结果进行对比分析，验证了所建立的多体动力学模型的正确性，为后继的仿真分析打下了基础。然后，利用所建立的整车刚柔耦合模型，分析了该非公路矿用宽体自卸车的通过性。分别分析了该车在搓板路工况、上下坡工况以及侧倾坡工况下前后悬架系统的受力与位移，并提出相应的改进意见。最后，利用所建立的整车刚柔耦合模型，借鉴相应国家标准分析了该非公路矿用宽体自卸车的操作稳定性与平顺性。为非公路矿用宽体自卸车的设计提供了依据。
[Abstract]:Based on the cooperative project of Jilin University and Xiamen Industry heavy Industry Co., Ltd, "Research on the frame of XGQ3650 Mine dump truck", this paper aims at the large load weight, long working time and high experimental cost of the off-road mine wide-body dump truck. Based on the theory of multi-body dynamics, theoretical mechanics, material mechanics and so on, the passage, operation stability and ride comfort of the off-road mine wide-body dump truck are analyzed by means of the theory of multi-body dynamics, theoretical mechanics and material mechanics. The research results are applied to practical engineering, which provides a certain theoretical basis and technical support for the design and improvement of wide-body dump truck for off-road mining. Firstly, the leaf spring, frame and road surface which have great influence on the simulation results are studied. The model of front and rear leaf spring is established by using the design standard of leaf spring three-link recommended by American Society of Automotive Engineering. Considering the influence of frame deformation on the simulation results, the frame is flexible. In addition, various experimental pavements are established by using the principle of sine superposition. A rigid-flexible coupling model including front suspension system, rear suspension system, steering system, flexible frame, cab, road surface, etc. The simulation results of the established model are compared with the experimental results, and the correctness of the established multi-body dynamics model is verified, which lays a foundation for the subsequent simulation analysis. Then, by using the rigid-flexible coupling model of the whole vehicle, the passage of the wide-body dump truck for off-road mining is analyzed. This paper analyzes the force and displacement of the front and rear suspension system under the working conditions of rubbing plate road, up and down slope and side slope respectively, and puts forward the corresponding suggestions for improving the load and displacement of the front and rear suspension system. Finally, based on the rigid-flexible coupling model of the whole vehicle, the operation stability and ride comfort of the off-road mine wide-body dump truck are analyzed with reference to the relevant national standards. It provides a basis for the design of wide-body dump truck for off-road mining.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD57

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