Finite Element Analysis of Interface Cracks Using Multiple Point Constraints

機構典藏 > College of Engineering > Graduate Institute & Department of Mechanical and Electro-Mechanical Engineering > Journal Article > Item 987654321/45720

Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/45720

Title:	Finite Element Analysis of Interface Cracks Using Multiple Point Constraints
Authors:	劉昭華;Liu, Chao-hwa;Lin, Jui-hsiang
Contributors:	淡江大學機械與機電工程學系
Keywords:	interface cracks;finite element method;multiple point constraints;fracture mechanics
Date:	2006-05
Issue Date:	2010-03-26 19:48:33 (UTC+8)
Publisher:	London: Sage Publications Ltd
Abstract:	A finite element technique to analyse closed-mode interface cracks is proposed in this study. Stress boundary conditions for a closed-tip model are transformed into multiple point constraints (MPCs) for nodal displacements. These constraints are imposed upon the finite element solutions to simulate closed-tip stress fields in crack-tip elements. This technique can deal with small as well as large crack-tip contact zones, and no special elements other than the standard quarter-point elements are needed. Since stresses approach infinity at the crack tip in a quarter-point element, dominant terms are used in deriving MPCs for nodal displacements. Fracture parameters are obtained by using the virtual crack extension method, and numerical results are in good agreement with analytical results.
Relation:	Journal of Strain Analysis for Engineering Design 41(4), pp.311-321
DOI:	10.1243/03093247JSA112
Appears in Collections:	[Graduate Institute & Department of Mechanical and Electro-Mechanical Engineering] Journal Article

Files in This Item:

File	Description	Size	Format
0309-3247_41(4)p311-321.pdf		286Kb	Adobe PDF	891	View/Open