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Mathematical Problems in Engineering
Volume 2017, Article ID 6814547, 6 pages
https://doi.org/10.1155/2017/6814547
Research Article

Reliability Analysis of Random Vibration Transmission Path Systems

School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China

Correspondence should be addressed to Wei Zhao; nc.ude.uen.liam@oahziew

Received 1 March 2017; Accepted 1 June 2017; Published 12 July 2017

Academic Editor: Yuri Vladimirovich Mikhlin

Copyright © 2017 Wei Zhao and Yi-Min Zhang. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The vibration transmission path systems are generally composed of the vibration source, the vibration transfer path, and the vibration receiving structure. The transfer path is the medium of the vibration transmission. Moreover, the randomness of transfer path influences the transfer reliability greatly. In this paper, based on the matrix calculus, the generalized second moment technique, and the stochastic finite element theory, the effective approach for the transfer reliability of vibration transfer path systems was provided. The transfer reliability of vibration transfer path system with uncertain path parameters including path mass and path stiffness was analyzed theoretically and computed numerically, and the correlated mathematical expressions were derived. Thus, it provides the theoretical foundation for the dynamic design of vibration systems in practical project, so that most random path parameters can be considered to solve the random problems for vibration transfer path systems, which can avoid the system resonance failure.