The impacts of time varying mesh stiffness on response sensitivity of linear vibration of the vehicle transmission

With the improving requirements of the dynamic quality of transmission system, only the eigensensitivities analysis could not satisfying the requirements of dynamic characteristics about transmission system of vehicle. It’s need to turn to response sensitivity research to find guideline for reduce vibration of vehicle transmission system in designing stage. This paper studies the impacts of time varying mesh stiffness on sensitivities of dynamic response with respect to design parameters. The lateral-torsional coupling dynamic model which adopting constant torque as input source is built up by lumped parameter method. The sensitivity equations are derived from dynamic equations by Direct Method. And the sensitivity results are obtain by numerical simulation method. The results show the amplitude of sensitivity curve of model calculated by average mesh stiffness is constant, while the amplitude of sensitivity curve of model calculated by time varying mesh stiffness is not. And there is no relationship between the amplitude of response sensitivity and the amplitude of response.