Highly accurate solutions and Padé approximants of the stress intensity factors and T-stress for standard specimens. (August 2015)

• Record Type: Journal Article
• Authors: Chowdhury, Morsaleen Shehzad; Song, Chongmin; Gao, Wei
• Is Part Of: Engineering fracture mechanics. Volume 144(2015)
• Page Start: 46
• Page End: 67
• Publication Date: 2015-08
• Subjects: Scaled boundary finite element method -- Stress intensity factor -- T-stress -- Standard fracture specimens -- Padé approximants; Fracture mechanics -- Periodicals; Rupture, Mécanique de la -- Périodiques; Fracture mechanics; Periodicals; 620.112605
• DOI: 10.1016/j.engfracmech.2015.06.035
• Languages: English
• ISSNs: 0013-7944

Abstract

Highlights: Efficient SBFEM meshing technique for standard specimens. Highly accurate numerical values of SIFs and T-stress for standard specimens. Precise Padé approximants of the SIFs and T-stress for standard specimens. Abstract: The scaled boundary finite element method is employed to obtain highly accurate solutions of the stress intensity factors (SIFs) and T-stress for standard homogeneous and bimaterial fracture specimens. The solutions are assembled into a practical database (up to 6 significant figures) corresponding to various crack lengths. Using a curve fitting technique, precise Padé approximants of the SIFs and T-stress are also developed, which retain a maximum error of <0.28% for any specimen. The findings of this paper are useful for engineering analysis and design, as well as verification of current and future numerical schemes for computing SIFs and T-stress.