Research on Dynamic Balance of Linkage Considering the Influence of Elastic Deformation Based on Simulation

Abstract:

A method based on mechanical kinetics, Virtual Prototype technology and Finite Element Method (FEM) is proposed, aiming at the dynamic balance of planar linkage with elastic deformation. The method applies to the situation that the elastic deformation of the components can’t be neglected. Translate the key components to flexible bodies by FEM; Build the rigid-flexible multi-body dynamics model by dynamic analysis software, and synthetically optimize the dynamic balance of the model by using the comprehensive indicator which includes input torque, shaking force and moment as the objective function; Finally, according to the parameter result of the previous optimization, the component’s geometrical shape was designed in three-dimensional modeling software. Taking a kind of crank-slide mechanism as an example, it uses this method to optimize a crank-slide mechanism’s dynamic balance and to make the objective function value declined by about 9.2%. The mechanism’s vibration characteristic is improved, so the method is proved to be practical and effective.

• Periodical: Applied Mechanics and Materials (Volumes 217-219)
• Pages: 1465-1470
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.217-219.1465
• Online since: November 2012
• Authors: Qi Bing Li, Yu Huang
• Keywords: Elastic Deformation, Finite Element Method (FEM), Multibody Dynamics (MBD), Planar Linkage, Synthetic Dynamic Balance, Virtual Prototype

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