NUMERICAL MODELING OF DYNAMIC AND NONLINEAR CRACK PROPAGATION IN FINITE BODIES, BY MOVING SINGULAR-ELEMENTS.

S. N. Atluri, T. Nishioka, M. Nakagaki

Research output: Contribution to journalConference article

21 Scopus citations

Abstract

Two classes of problems are considered: (i) dynamic analysis of rapidly propagating cracks in finite bodies, of arbitrary shape, wherein linear-elastic material behavior and two-dimensional conditions prevail; (ii) analysis of fatigue growth of cracks near cold-worked fastener holes in two-dimensional bodies involving elastic-plastic materials. In both instances, simple numerical methodologies to imbed analytical asymptotic solutions for singularities in strains/stresses near the propagating crack-tip, and to account for the spatial movement of these singularities along with the crack-tip, are presented. Numerical Solutions of several problems, in both the cases, are presented; and results for appropriate fracture-characterizing parameters for these problems are presented and discussed.

Original languageEnglish
Pages (from-to)37-66
Number of pages30
JournalAmerican Society of Mechanical Engineers, Applied Mechanics Division, AMD
Volume35
StatePublished - 1979
EventNonlinear and Dyn Fract Mech, Symp presented at the Winter Annu Meet of ASME - New York, NY, USA
Duration: Dec 2 1979Dec 7 1979

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