IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v14y2021i6p1604-d516586.html
   My bibliography  Save this article

Rigid-Flexible Modal Analysis of the Hydraulic 6-DOF Parallel Mechanism

Author

Listed:
  • Chenyang Zhang

    (School of Mechatronics Engineering, Harbin Institute of Technology, West Dazhi Street No. 92, Harbin 150000, China)

  • Hongzhou Jiang

    (School of Mechatronics Engineering, Harbin Institute of Technology, West Dazhi Street No. 92, Harbin 150000, China)

Abstract

In view of the problems encountered in previous hydraulic 6-DOF parallel mechanism projects, flexible modes appear that the actual natural frequencies of x and y degrees of freedom of the parallel mechanism are lower than those obtained through calculation. The phenomenon above not only decreases the dynamic response characteristics of the mechanism, but also leads to doubts about the actual performance of the mechanism. The real reason for the phenomenon above is solved in this paper. First the flexible structure of the hydraulic cylinder is analyzed and simplified, and then the dynamic model of the rigid-flexible 6-DOF parallel mechanism is established with the extended Hamilton’s principle. Finally the rigid-flexible modes are calculated with the dynamic model obtained, further analysis and verification with a simulation model and an experimental platform are also conducted. Results show that the phenomenon of the flexible modes is mainly caused by the O-rings of the step-seals of the guide sleeve and those with less elasticity should be adopted to keep the dynamic characteristics of the parallel mechanism.

Suggested Citation

  • Chenyang Zhang & Hongzhou Jiang, 2021. "Rigid-Flexible Modal Analysis of the Hydraulic 6-DOF Parallel Mechanism," Energies, MDPI, vol. 14(6), pages 1-11, March.
  • Handle: RePEc:gam:jeners:v:14:y:2021:i:6:p:1604-:d:516586
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/14/6/1604/pdf
    Download Restriction: no

    File URL: https://www.mdpi.com/1996-1073/14/6/1604/
    Download Restriction: no
    ---><---

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Zhiqiang Zhang & Dacheng Cong & Zhidong Yang & Yunfei Cai & Junwei Han, 2021. "Studies on Frequency Response Characteristics of High-Speed Railway Train End Relationship Test System with Flexible Bases," Energies, MDPI, vol. 14(19), pages 1-13, September.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jeners:v:14:y:2021:i:6:p:1604-:d:516586. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.