Parameter design of movable teeth of two-tooth difference pendulum based on dynamic characteristics

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Journal of Vibration and Shock ›› 2021, Vol. 40 ›› Issue (11) : 252-261.

YI Yali1, GUO Zhenghui1, WEI Rui1, GAO Yunfei1, JIN Herong1,2

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Abstract

Here, in order to reduce steady-state response amplitude of movable teeth of a two-tooth difference pendulum bar, and reduce dynamic load of meshing pair and improve running stability of transmission system, a parameter design method for movable teeth of the two-tooth difference pendulum bar was proposed based on dynamic characteristics analysis of movable teeth transmission system.The dynamic model for movable teeth transmission was established to solve and obtain time-varying meshing stiffness of meshing pair, and derive the equivalent meshing stiffness.Combining with the system dynamic analysis model, the steady-state vibration response of each sub-component of the system was calculated.The evaluation function of component dynamic performance was established based on the system transmission stability and dynamic load coefficient of meshing pair.The objective function of system dynamic performance evaluation was established according to weights of sub-components in the system.Through evaluating the objective function, design parameters with good dynamic performance were obtained.The harmonic response simulation analysis for the virtual prototype with 3 groups of design parameters was performed.The simulation results showed that the sweep amplitude of the virtual prototype with the design parameters determined based on dynamic characteristics analysis is the minimum; the study results can provide a technical reference for improving dynamic performance of movable teeth transmission system.

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swing-rod movable teeth / steady-state response / objective function / harmonic response

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YI Yali1, GUO Zhenghui1, WEI Rui1, GAO Yunfei1, JIN Herong1,2. Parameter design of movable teeth of two-tooth difference pendulum based on dynamic characteristics[J]. Journal of Vibration and Shock, 2021, 40(11): 252-261

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