基于最优负刚度结构改善土壤压实机平顺性的方法

IF 0.6 4区工程技术 Q4 ENGINEERING, MECHANICAL

International Journal of Vehicle Design Pub Date : 2023-01-01 DOI:10.1504/ijvd.2023.131052

Nguyen Van Liem, Dengke Ni

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引用次数: 1

摘要

为了提高土壤压实机的平顺性，提出了采用负刚度结构设计驾驶员座悬架和液压支架对驾驶室进行隔离的新方法。建立了考虑轮鼓与变形地形相互作用的非线性车辆动力学模型，对NSS的性能进行了评价。基于遗传算法，优化NSS的参数，进一步提高乘坐质量。通过座舱和驾驶室在频域和时域上的位移和加速度来评价车辆的平顺性。通过实验验证了研究结果。结果表明，采用最优NSS时，座椅和驾驶室加速度的均方根(RMS)和功率谱密度比不采用NSS时明显降低。在整车工作状态下，RMS座椅的加速度明显衰减了67.54%。因此，将优化后的NSS应用于越野车辆的座椅悬架，可以提高乘坐舒适性。

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Method of improving the soil compactor's ride quality based on the optimal negative stiffness structure

A new driver's seat suspension designed by the negative-stiffness-structure (NSS) and cab's isolation used by the hydraulic mounts are proposed to enhance the soil compactor's ride quality. A nonlinear vehicle dynamics model that considers the interaction between the wheel/drum and deformable terrains is established to evaluate the NSS's performance. Based on the genetic algorithm, NSS's parameters are optimised to further improve ride quality. The ride quality is evaluated through the displacement and acceleration of the seat and cab in the frequency and time domains. The research results are also verified via the experiment. The results show that the root-mean-square (RMS) and power-spectral-density of the seat and cab accelerations with the optimal NSS are strongly reduced in comparison without NSS. Especially, the RMS seat's acceleration is markedly attenuated by 67.54% under the vehicle working condition. Therefore, the optimal NSS applied on off-road vehicle's seat suspension could enhance the ride quality.

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来源期刊

International Journal of Vehicle Design 工程技术-工程：机械

CiteScore

1.10

自引率

0.00%

发文量

审稿时长

9 months

期刊介绍： IJVD, the journal of vehicle engineering, automotive technology and components, has been established for over a quarter of a century as an international authoritative reference in the field. It publishes the Proceedings of the International Association for Vehicle Design, which is an independent, non-profit-making learned society that exists to develop, promote and coordinate the science and practice of vehicle design and safety. Topics covered include Vehicle engineering design Automotive technology R&D of all types of self-propelled vehicles R&D of vehicle components Interface between aesthetics and engineering Integration of vehicle and components design into the development of complete vehicle systems Social and environmental impacts of vehicle design Energy Safety.