On the use of one point and two points singularity elements in the analysis of kinked cracks
- 1 May 1990
- journal article
- research article
- Published by Wiley in International Journal for Numerical Methods in Engineering
- Vol. 29 (7) , 1487-1499
- https://doi.org/10.1002/nme.1620290708
Abstract
A 3‐noded triangular two singular points finite element is proposed to model two variable order singularities lying at close proximities as in the case of a kinked crack. The element meets the rigid body mode and the interelement compatibility of the convergence criteria. A degenerate form of the element is a one point variable order singularity element, which meets all the convergence requirements. A number of kinked crack problems have been analysed using the new element and its degenerate form. The computed results are compared with analytical solutions. The accuracy of the results is found to be good.Keywords
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