Weight Functions and Stress Intensity Factors for Eccentric through Cracks in a 3-D Rectangular Plate Subjected to In-Plane Loading

Abstract:

Three unknown coefficient weight functions for eccentric through cracks in a 3-D rectangular plate subjected to in-plane loading are proposed. 3-D finite element models of cracked rectangular plates within the whole range of crack aspect ratios, i.e., 0≤e/W≤0.8, 0.08≤a/(W-e)≤0.9, were established to obtain a reference SIF database for both crack points A and B, rather than 2-D finite element models. To improve the accuracy of the weight function, the coefficients were derived from this database using the Binary Lagrange Interpolation Method instead of Curve-Fitting Expression. Comparisons of stress intensity factors calculated using the present weight functions with finite element data for the high-order power law and residual stress distributions show high accuracy of the present weight functions.

• Periodical: Applied Mechanics and Materials (Volume 853)
• Pages: 8-14
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.853.8
• Online since: September 2016
• Authors: Xu Teng Hu*, Xu Jia, Ying Dong Song
• Keywords: 3-D Rectangular Plate, Eccentric Through Cracks, In-Plane Loading, Stress Intensity Factor, Weight Functions

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