In this paper, efficient numerical methods for the analysis of crack-closure effects on fatigue-crack-growth-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.
|Pages (from-to)||14. 1-14. 32|
|Journal||IEE Conference Publication|
|State||Published - 1979|
|Event||Eng Appl of the Finite Elem Method, Pap Presented at the Int Conf - Hovik, Norw|
Duration: May 9 1979 → May 11 1979