Numerical evaluation of stress intensity factor andJ integral in three-point bend specimen

Autor:	R.K. Pandey, Raghu Natarajan, C. R. Pratap, K. N. Gupta
Rok vydání:	1984
Předmět:	Numerical Analysis Singularity Quadratic equation Plane (geometry) Applied Mathematics Degenerate energy levels General Engineering Fracture mechanics Point (geometry) Geometry Stress intensity factor Finite element method Mathematics
Zdroj:	International Journal for Numerical Methods in Engineering. 20:15-24
ISSN:	1097-0207 0029-5981
DOI:	10.1002/nme.1620200103
Popis:	The present paper attempts to evaluate the fracture mechanics parameters, the stress intensity factor (K) and Rice's energy integral (J) in plane strain conditions for three-point bend specimens. Both the parameters have been evaluated by the FEM using higher order isoparametric elements (i.e. quadratic elements). The crack tip elastic singularity (1/√r) has been taken into account by the use of the special crack tip elements of degenerate triangular element type as well as the fine eight-noded isoparametric plane elements. The stress distribution has been compared with the Westergaard solution in the vicinity of the crack. The K and J values have also been-compared with the theoretical results.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::419a19686cb87e719d914bee1ec1b388 https://doi.org/10.1002/nme.1620200103 Zobrazit plný text záznamu Plný text