Hybrid-finite-element analysis of some nonlinear and 3-dimensional problems of engineering fracture mechanics

Satya N. Atluri, M. Nakagaki, K. Kathiresan

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

In this paper, efficient numerical methods for the analysis of crack-closure effects on fatigue-crackgrowth-rates, in plane stress situations, and for the solution of stress-intensity factors for arbitrary shaped surface flaws in pressure vessels, are presented. For the former problem, an elastic-plastic finite element procedure valid for the case of finite deformation gradients is developed and crack growth is simulated by the translation of near-crack-tip elements with embedded plastic singularities. For the latter problem, an embedded-elastic-singularity hybrid finite element method, which leads to a direct evaluation of K-factors, is employed.

Original languageEnglish
Pages (from-to)511-520
Number of pages10
JournalComputers and Structures
Volume12
Issue number4
DOIs
StatePublished - 1980

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