Modeling Study on Stiffness Characteristics of Hydraulic Cylinder under Multi-Factors

IF 1.2 4区工程技术 Q3 ENGINEERING, MECHANICAL

Strojniski Vestnik-Journal of Mechanical Engineering Pub Date : 2017-07-17 DOI:10.5545/SV-JME.2017.4313

H. Feng, Q. Du, Yuxian Huang, Y. Chi

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引用次数: 29

Abstract

For a complex mechanical system driven by hydraulic cylinders, the dynamic response characteristics of the mechanical system are significantly affected by the stiffness characteristics of hydraulic cylinders. This paper comprehensively studies the impacts of various factors on the stiffness characteristics of the hydraulic cylinders, including the oil bulk modulus, the air content in the hydraulic oil, the axial deformation of the piston rod, the volume expansion of the cylinder barrel, the volume expansion of the metal pipes and the flexible hoses, and the deformation of the hydraulic cylinder sealing. By combining the theoretical analysis and the experimental results, the level of each impacting factor was quantified, and the stiffness model of the hydraulic cylinder was established. Finally, comparative analysis of the stiffness was conducted by taking the experimental hydraulic cylinder as an example; it was verified that the calculated results of the proposed hydraulic cylinder stiffness model approximated the experimental results. Compared with stiffness models presented in current literature, the average accuracy was improved by more than 15 %.

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多因素下液压缸刚度特性建模研究

对于由液压缸驱动的复杂机械系统，液压缸刚度特性对机械系统的动态响应特性影响很大。本文综合研究了油液体积模量、液压油中空气含量、活塞杆轴向变形、缸筒体积膨胀、金属管和柔性软管体积膨胀、液压缸密封变形等因素对液压缸刚度特性的影响。结合理论分析和实验结果，量化了各影响因素的水平，建立了液压缸刚度模型。最后，以实验液压缸为例进行了刚度对比分析;验证了所建立的液压缸刚度模型的计算结果与实验结果接近。与现有文献中提出的刚度模型相比，平均精度提高了15%以上。

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

Strojniski Vestnik-Journal of Mechanical Engineering 工程技术-工程：机械

CiteScore

3.00

自引率

17.60%

发文量

审稿时长

4.1 months

期刊介绍： The international journal publishes original and (mini)review articles covering the concepts of materials science, mechanics, kinematics, thermodynamics, energy and environment, mechatronics and robotics, fluid mechanics, tribology, cybernetics, industrial engineering and structural analysis. The journal follows new trends and progress proven practice in the mechanical engineering and also in the closely related sciences as are electrical, civil and process engineering, medicine, microbiology, ecology, agriculture, transport systems, aviation, and others, thus creating a unique forum for interdisciplinary or multidisciplinary dialogue.