Sensitivity analysis for vibration transfer path systems with non-viscous damping

In this paper, based on the dynamic sensitivity technique, we propose a method for sensitivity analysis of vibration transfer path systems with respect to their path parameters. It is well known that non-viscous damping is an important factor in causing the nonlinearity of vibration systems. The sensitivity of nonlinear vibration systems with respect to different kinds of non-viscous damping is discussed. With the sensitivity of dynamic responses with respect to transfer path parameters as an evaluation criterion, the contribution level of each transfer path to the vibration of acceptance structures was listed in order. Using the proposed method, the sensitivity of the vibration system with multiple and/or multi-dimensional transfer paths could be determined explicitly and accurately in the time domain.