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Elasto-dynamic analysis of a novel 2-DoF rotational parallel mechanism with an articulated travelling platform

  • Recent Progress and Novel Applications of Parallel Mechanisms
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Abstract

This paper carries out the elasto-dynamic analysis of a novel 2 degrees-of-freedom (DoF) rotational parallel mechanism (RPM) with an articulated travelling platform by means of kineto-elasto dynamic method. The architecture of the proposed 2-DoF RPM is firstly described, and then its kinematic analysis is carried out by closed-loop vector method. On the basis of finite element analysis, the elasto-dynamic models of movable components are established before assembling to formulate the elasto-dynamic equations of the whole mechanism in the light of deformation compatibility conditions. The free vibration equation is then achieved to evaluate the natural frequency of the novel 2-DoF RPM. Finally, an example is illustrated and the results are verified by finite element software. It shows that the relatively high natural frequencies and good dynamic performance make the novel 2-DoF RPM a promising solution for pose-adjusting module of 5-DoF machine centre.

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Acknowledgments

This research work was supported by the National Natural Science Foundation of China (Grant No. 51205278, 51475321), Ph.D. Programs Foundation of Ministry of Education of China (Grant No. 2012003211003, 2012003212003), and Tianjin Research Program of Application Foundation and Advanced Technology (Grant No. 13JCQNJC04600).

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Authors and Affiliations

  1. Key Laboratory of Mechanism Theory and Equipment Design Ministry of Education, Tianjin University, Tianjin, 300072, China

    Yimin Song, Gang Dong, Tao Sun & Binbin Lian

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  1. Yimin Song
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  2. Gang Dong
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  3. Tao Sun
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  4. Binbin Lian
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Correspondence to Tao Sun.

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Song, Y., Dong, G., Sun, T. et al. Elasto-dynamic analysis of a novel 2-DoF rotational parallel mechanism with an articulated travelling platform. Meccanica 51, 1547–1557 (2016). https://doi.org/10.1007/s11012-014-0099-3

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  • DOI: https://doi.org/10.1007/s11012-014-0099-3

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