A finite element analysis of the singular stress fields in anisotropic materials loaded in antiplane shear
作者:
Stephane S. Pageau,
Paul F. Joseph,
Sherrill B. Biggers,
期刊:
International Journal for Numerical Methods in Engineering
(WILEY Available online 1995)
卷期:
Volume 38,
issue 1
页码: 81-97
ISSN:0029-5981
年代: 1995
DOI:10.1002/nme.1620380106
出版商: John Wiley&Sons, Ltd
关键词: Singular fields;Finite element formulation;Eigensolution;Multi‐material junctions;Antiplane
数据来源: WILEY
摘要:
AbstractA finite element formulation is developed to determine the order and angular variation of singular stress states at material and geometric discontinuities in anisotropic materials subject to antiplane shear loading. The displacement field of the sectorial element is quadratic in the angular co‐ordinate direction and asymptotic in the radial direction measured from the singular point. The formulation of Yamada and Okumura14for in‐plane problems is adapted for this purpose. The simplicity and accuracy of the formulation are demonstrated by comparison to several analytical antiplane shear solutions for both isotropic and anisotropic multi‐material wedges and junctions with and without disbonds. The nature and speed of convergence of the eigensolution suggests that the solution presented here could be used in developing enriched elements for accurate and computationally efficient evaluation of stress intensity factors in problems having complex global geome
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