Author(s)

C.Y. Cha, S.V. Iyer & J. Trevelyan

Abstract

A breakage occurred in the neck area of a cathode ray tube (CRT) during the process of yoke clamping. While previous studies have shown that the BEM can successfully predict the stress and deformation due to the internal vacuum and shrink-band loading, these loading conditions require a three dimensional analysis of the complex geometry. The neck breakage, however, can be analyzed using a simplified model. The neck area of the CRT is essentially cylindrical and we are able to make huge savings in both data preparation time and computational resources by using an axisymmetric model. This has been shown to be acceptable since the vacuum and shrink band conditions have little effect on the local peak stresses in the neck due to yoke clamping. The neck failure has b

Keywords