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    題名: Finite Element Analysis of Interface Cracks Using Multiple Point Constraints
    作者: 劉昭華;Liu, Chao-hwa;Lin, Jui-hsiang
    貢獻者: 淡江大學機械與機電工程學系
    關鍵詞: interface cracks;finite element method;multiple point constraints;fracture mechanics
    日期: 2006-05
    上傳時間: 2010-03-26 19:48:33 (UTC+8)
    出版者: London: Sage Publications Ltd
    摘要: 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.
    關聯: Journal of Strain Analysis for Engineering Design 41(4), pp.311-321
    DOI: 10.1243/03093247JSA112
    顯示於類別:[機械與機電工程學系暨研究所] 期刊論文

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