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Dynamic analysis of an over-constrained parallel mechanism with the principle of virtual work

Author

Listed:
  • Miao Chen
  • Qing Zhang
  • Yunfei Ge
  • Xianrong Qin
  • Yuantao Sun

Abstract

This research presents the mathematical modelling of kinematic and complete dynamic analysis of a novel over-constrained parallel mechanism, which consists of two universal-prismatic-revolute joint limbs and one revolute-revolute-universal joint limb. The kinematic model is constructed based on the closed-loop vector method and the velocity Jacobian matrix is deduced, velocity-mapping relationships between all moving components and moving platform are also performed. Afterwards, inertia and applied forces are analysed, the complete dynamic equations with the classical Stribeck friction model of the proposed structure is established based on the principle of virtual work. A theoretical numerical example is given to solve kinematics and dynamics solutions, and theoretical forces from developed dynamic formulation are verified by the physic model simulation in Simscape and the rigid-flexible coupling model simulation in Adams. A good agreement between the theoretical results and multi-body software simulation is found.

Suggested Citation

  • Miao Chen & Qing Zhang & Yunfei Ge & Xianrong Qin & Yuantao Sun, 2021. "Dynamic analysis of an over-constrained parallel mechanism with the principle of virtual work," Mathematical and Computer Modelling of Dynamical Systems, Taylor & Francis Journals, vol. 27(1), pages 347-372, January.
    • Handle: RePEc:taf:nmcmxx:v:27:y:2021:i:1:p:347-372
    DOI: 10.1080/13873954.2021.1920618
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