caa a22 4500 469124253 CHVBK 20180323133147.0 cr unu---uuuuu 170328e19920501xx s 000 0 eng 10.1007/BF00018030 doi (NATIONALLICENCE)springer-10.1007/BF00018030 Dual boundary element analysis of cracked plates: singularity subtraction technique [Elektronische Daten] [A. Portela, M. Aliabadi, D. Rooke] The present paper is concerned with the formulation of the singularity subtraction technique in the dual boundary element analysis of the mixed-mode deformation of general homogeneous cracked plates. The equations of the dual boundary element method are the displacement and the traction boundary integral equations. When the displacement equation is applied on one of the crack surfaces and the traction equation is applied on the other, general mixed-mode crack problems can be solved in a single region boundary element formulation, with both crack surfaces discretized with discontinuous quadratic boundary elements. The singularity subtraction technique is a regularization procedure that uses a singular particular solution of the crack problem to introduce the stress intensity factors as additional problem unknowns. The single-region boundary element analysis of a general crack problem restricts the availability of singular particular solutions, valid in the global domain of the problem. A modelling strategy, that considers an automatic partition of the problem domain in near-tip and far-tip field regions, is proposed to overcome this difficulty. After the application of the singularity subtraction technique in the near-tip field regions, regularized locally with the singular term of the Williams' eigenexpansion, continuity is restored with equilibrium and compatibility conditions imposed along the interface boundaries. The accuracy and efficiency of the singularity subtraction technique make this formulation ideal for the study of crack growth problems under mixed-mode conditions. Kluwer Academic Publishers, 1992 Portela A. Computational Mechanics Institute, Wessex Institute of Technology, Ashurst, SO4 2AA, Southampton, UK aut Aliabadi M. Computational Mechanics Institute, Wessex Institute of Technology, Ashurst, SO4 2AA, Southampton, UK aut Rooke D. Royal Aerospace Establishment, GU14 6TD, Farnborough, Hants, UK aut International Journal of Fracture Kluwer Academic Publishers 55/1(1992-05-01), 17-28 0376-9429 55:1<17 1992 55 10704 https://doi.org/10.1007/BF00018030 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00018030 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Portela A. Computational Mechanics Institute, Wessex Institute of Technology, Ashurst, SO4 2AA, Southampton, UK aut NATIONALLICENCE 700 1- Aliabadi M. Computational Mechanics Institute, Wessex Institute of Technology, Ashurst, SO4 2AA, Southampton, UK aut NATIONALLICENCE 700 1- Rooke D. Royal Aerospace Establishment, GU14 6TD, Farnborough, Hants, UK aut NATIONALLICENCE 773 0- International Journal of Fracture Kluwer Academic Publishers 55/1(1992-05-01), 17-28 0376-9429 55:1<17 1992 55 10704 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer