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http://dx.doi.org/10.5050/KSNVE.2015.25.4.232

Selection of Nodes and Modes for Reduced Modeling of Substructures  

Hwang, Woo Seok (School of Mechanical and Automotive Engineering, Daegu University)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.25, no.4, 2015 , pp. 232-237 More about this Journal
Abstract
Complex dynamic systems are composed of several subsystems. Each subsystems affect the dynamics of other subsystems since they are connected to each other in the whole system. Theoretically, we can derive the exact mass and stiffness matrix of a system if we have the natural frequencies and mode shapes of that system. In real situation, the modal parameters for the higher modes are not available and the number of degree of freedom concerned are not so high. This paper shows a simple method to derive the mass and stiffness matrix of a system considering the connecting points of subsystems. Since the accuracy of reconstructed structure depends on the selection of node and mode, the rule for selection of node and mode are derived from the numerical examples.
Keywords
Modal Parameter; Modal Analysis; Modal Test; Substructure Analysis;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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