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http://dx.doi.org/10.5916/jkosme.2012.36.6.794

A Study on the Improvement of FEM model in Plate Vibration by Modification of Young's Modulus and Shape  

Park, Sok-Chu (한국대학교 조선해양시스템공학부)
Oh, Chang-Guen (두산모트롤)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.36, no.6, 2012 , pp. 794-801 More about this Journal
Abstract
Finite Element Method is a strong tool to analyse static and dynamic problem of a structure. FEM is a good method for static problem, but for dynamic problem there are some differences between real phenomena and analyzed phenomena. Therefore some modifications are needed to identify two results. In this paper authors propose a genetic algorithm method 1) to adjust dimensions of plate for identifying natural frequencies, 2) to fit amplitude of FEM Frequency Response Function(FRF) onto it of real FRF. Analysis by raw FEM data gave questions if the results were for the same object. By only adjusting Young's modulus much better accordances were obtained, but limitation existed still. Very good agreements were achieved by shape modification and damping coefficient identification.
Keywords
Finite Element Method; Frequency Response Function; Proportional Damping; Genetic Algorithm; Objective Function;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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