Ride comfort analysis and optimization of a hydro-pneumatic suspension system for a mining dump truck

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-05-30 DOI:10.1177/09544070241251736

Qihang Liu, Xiumei Liu, Handui Feng, Beibei Li, Shen Liu, Yunlong Luo, Taiyang Sha

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Abstract

Mining dump truck is an important carrier used for short-distance round-trip transportation of ore and other materials in open-pit mines. This paper takes XDR80t mining dump truck produced by XCMG as the research object. The integrated virtual prototype model of hydro-pneumatic suspension mechanical and hydraulic systems is established by ADAMS and AMESim. The co-simulation environment is carried out to realize the virtual prototype modeling and simulation. Using the wheel and chassis centroid acceleration data collected at the site, a method based on frequency domain integration is proposed to calculate the displacement data which is used as the model input. Comparing the simulation test results with the field test results, both the errors of the suspension cylinder dynamic stroke and the body vertical acceleration root mean square (RMS) values are around 5%. The dynamic response of the vehicle body under typical road excitation at different vehicle speeds is analyzed by co-simulation. For low-speed obstacle crossings at 10 or 20 km/h, the original suspension system with only non-rod chamber interconnections system is able to ensure the ride comfort of the vehicle. While the speed is increased to 25 or 30 km/h, there will be a certain failure of the interconnecting suspension because of the poor fluid circulation condition, and the body vibration will be seriously aggravated. Therefore, the rod chamber of the cylinder is connected to guarantee the smooth flow of oil. The peak value of acceleration is reduced from 39.55 to 24.74 m/s2 at high speed, when the suspension was changed from a form with only non-rod chambers interconnected to both rod and non-rod chambers interconnected. When driving on random road, the RMS value of acceleration decreased by about 21.9%. This improved interconnected hydraulic system can effectively improve the ride comfort of the mining dump truck.

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矿用自卸车液压气动悬挂系统的乘坐舒适性分析与优化

矿用自卸车是露天矿山短途往返运输矿石等物料的重要载体。本文以徐工集团生产的 XDR80t 矿用自卸车为研究对象。利用ADAMS和AMESim建立了液气悬架机械液压系统的集成虚拟样机模型。通过协同仿真环境实现虚拟样机的建模与仿真。利用现场采集的车轮和底盘中心点加速度数据，提出了一种基于频域积分的方法来计算位移数据，并将其作为模型输入。将仿真测试结果与现场测试结果进行比较，悬架油缸动态行程和车身垂直加速度均方根值的误差均在 5%左右。通过联合仿真分析了不同车速下典型路面激励下车身的动态响应。在以 10 或 20 km/h 的速度低速通过障碍物时，仅采用非杆腔互连系统的原始悬架系统能够确保车辆的乘坐舒适性。当车速提高到 25 或 30 km/h 时，由于流体循环状况不佳，互联悬架会出现一定的失效，车身振动会严重加剧。因此，为了保证油液的顺畅流动，油缸的杆腔是连通的。当悬架从只有非连杆室相通的形式变为连杆室和非连杆室都相通的形式时，高速行驶时的加速度峰值从 39.55 m/s2 降至 24.74 m/s2。在随机道路上行驶时，加速度均方根值降低了约 21.9%。改进后的互联液压系统可有效提高矿用自卸车的驾乘舒适性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.