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48.3: Finite Element Modeling Technique and Optimal Bead Design of Frame in CRTs
Author(s) -
Oh HyungSeok,
Kim JongHeon
Publication year - 2005
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.2036301
Subject(s) - finite element method , frame (networking) , vibration , crts , structural engineering , modal analysis , normal mode , modal , computer science , acoustics , engineering , mechanical engineering , materials science , physics , computer graphics (images) , polymer chemistry
Abstract Since a frame and a shadow‐mask are welded together, vibration of the frame excites the shadow‐mask, which causes the discoloration of screen. In this paper, a finite element model is suggested to obtain accurate vibration responses of a frame by imposing appropriate boundary conditions. The natural frequencies and their mode shapes resulted from the finite element analysis are consistent with those of modal experiments. In addition, an optimized 34″ frame designed by finite element analysis is presented and is investigated. The suggested frame shows better vibration response than the one of an initial frame.