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http://dx.doi.org/10.3795/KSME-A.2016.40.5.483

Global Sensitivity Analysis of Joints for Plug-in Digital Framework  

Lee, Dooho (Dept. of Mechanical Engineering, Dongeui Univ.)
Won, Young-Woo (Dept. of Mechanical Engineering, Dongeui Univ.)
Kwon, Jong-Hyun (Hochang MF Ltd.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.40, no.5, 2016 , pp. 483-488 More about this Journal
Abstract
Plug-In Digital Framework is a system response analysis tool that is employed when system components are composed of black-box modules. Generally, the dynamic characteristics of joints between the system components significantly affect system responses, and they lead to displacement- and frequency-dependent stiffness and loss factor. Thus, the sensitivity of each joint parameters should be estimated from a global perspective. In this study, we introduce a global sensitivity analysis procedure under the Plug-In Digital Framework. To efficiently calculate the system responses, we introduce the frequency response function (FRF)-based substructuring method. Using the random balance designs (RBD), we generate the system responses and estimate the global first-order sensitivities for each joint stiffness. We apply the proposed global sensitivity analysis method to an interior noise problem of a passenger car, and we evaluate the efficiency of the global sensitivity analysis method.
Keywords
Global Sensitivity Analysis; FRF-based Substructuring; Random Balance Design;
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