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Analysis of stress and natural frequencies of high-speed spatial parallel mechanism

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Abstract

In order to grasp the dynamic behaviors of 4-UPS-UPU high-speed spatial parallel mechanism, the stress of driving limbs and natural frequencies of parallel mechanism were investigated. Based on flexible multi-body dynamics theory, the dynamics model of 4-UPS-UPU high-speed spatial parallel mechanism without considering geometric nonlinearity was derived. The stress of driving limbs and natural frequencies of 4-UPS-UPU parallel mechanism with specific parameters were analyzed. The relationship between the basic parameters of parallel mechanism and its dynamic behaviors, such as stress of driving limbs and natural frequencies of parallel mechanism, were discussed. The numerical simulation results show that the stress and natural frequencies are relatively sensitive to the section parameters of driving limbs, the characteristic parameters of material on driving limbs, and the mass of moving platform. The researches can provide important theoretical base of the analysis of dynamic behaviors and optimal design for high-speed spatial parallel mechanism.

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Authors and Affiliations

  1. College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao, 266590, China

    Xiu-long Chen  (陈修龙), Wen-bin Li  (李文彬), Yu Deng  (邓昱) & Yun-feng Li  (李云峰)

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  1. Xiu-long Chen  (陈修龙)
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  2. Wen-bin Li  (李文彬)
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  3. Yu Deng  (邓昱)
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  4. Yun-feng Li  (李云峰)
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Corresponding author

Correspondence to Xiu-long Chen  (陈修龙).

Additional information

Foundation item: Project(51005138) supported by the National Natural Science Foundation of China; Project(BS2012ZZ008) supported by Shandong Young Scientists Award Fund, China; Project(J09LD54) supported by the Natural Science Foundation of Shandong Education Department of China; Project(2011KYJQ102) supported by the Science Foundation of Shandong University of Science and Technology, China; Project(HGDML-1104) supported by Jiangsu Key Laboratory of Digital Manufacturing Technology, China

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Chen, Xl., Li, Wb., Deng, Y. et al. Analysis of stress and natural frequencies of high-speed spatial parallel mechanism. J. Cent. South Univ. 20, 2676–2684 (2013). https://doi.org/10.1007/s11771-013-1783-5

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  • DOI: https://doi.org/10.1007/s11771-013-1783-5

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