Proceedings of the Asian Pacific Conference on Fracture and Strength and International Conference on Advanced Technology in Experimental Mechanics
Online ISSN : 2433-1279
Effective Three-Dimensional Finite Element Analysis and Optimum Design of Composite Patch for Repairing Structural Panels(Composite 4)
Hideki SEKINEDaisuke AOKI
会議録・要旨集 フリー

p. 690-695


Composite patch repair of aircraft structural panels has recently received wide attention. When this repair technique is applied to the aircraft structural panels, it is imperative to design composite patches which are reliable enough to operate in severe environmental conditions. In designing composite patches, the accurate stress fields in the repaired structural panels and the bonded composite patches should be analyzed since highly complicated three-dimensional stress fields are developed. To obtain the accurate stress fields in repaired structural panels and bonded composite patches, usually the conventional three-dimensional finite element method is used. However, the conventional three-dimensional finite element method involves with a long computational time for iterative stress analysis. In this paper, we develop an effective three-dimensional finite element method based on the concept of domain decomposition with independent interfaces. Using this method, we carry out several parametric studies to examine the effect of patch shape and size on the stress fields in a repaired structural panel and bonded composite patches. The method is also used to determine the optimum patch shape and size so as to endure maximum tensile applied stress by a mathematical programming.

© 2001 The Japan Society of Mechanical Engineers
前の記事 次の記事