Frequency Response and Jump Avoidance in a Nonlinear Passive Engine Mount

SAGE Publications - Tập 12 Số 11 - Trang 1205-1237 - 2006
Reza N. Jazar1, Ryan W. Houim2, A. Narimani3, M. F. Golnaraghi4
1Department of Mechanical Engineering, Manhattan College, Riverdale, NY 10471, USA
2Department of Mechanical and Nuclear Engineering, High Pressure Combustion Lab, University Park, PA 16802, USA
3L3 Communication Electronic Systems, Toronto, ON, Canada
4Department of Mechanical Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada

Tóm tắt

This paper explores a model for a nonlinear one-degree of freedom passive vibration isolator system, known as a smart engine mount. Nonlinearities are employed to analyze and possibly improve the behavior of the optimal linear mount. Nonlinear damping and stiffness rates of the isolator have interacting effects on the dynamic behavior of the mount. The frequency response of the system is obtained using the averaging perturbation method, and a parametric analysis shows that the effect of nonlinear stiffness rate on frequency response is opposite to that of the nonlinear damping rate. Stability of the steady state periodic response has also been analyzed. Jump avoidance criteria are introduced, and the conditions for jump avoidance are studied. Closed form solutions for the absolute acceleration and relative displacement frequency responses are derived, since they are essential to use of the RMS optimization method.

Từ khóa


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Thông tin xuất bản

SAGE Publications

Tập 12 Số 11

1205-1237

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