Results 271 to 280 of about 165,542 (311)

Three-Dimensional Cracks: Further Concepts

1996
In Chapter 6 the basic principles of the distributed dislocation (loop) technique for three-dimensional crack problems were described, where the stress due to an infinitesimal dislocation loop of unit strength was used as the kernel function of the singular integral equation.
D. A. Hills, P. A. Kelly, D. N. Dai, A. M. Korsunsky   +3 more
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Crack front elastic stress state for three-dimensional crack problems

International Journal of Fracture, 1984
The problems inherent in the estimation of fracture mechanics parameters for three-dimensional crack problems are reviewed. A novel parameter is introduced to quantify the loss of constraint along that portion of a crack front adjacent to a free surface.
D. N. Fenner, M. J. Abdul Mihsein
openaire   +1 more source

Uncoupled characteristics of three-dimensional planar cracks

International Journal of Engineering Science, 1998
The uncoupled characteristics of three-dimensional planar cracks under arbitrary loading is investigated by boundary integral equation method. From theoretical analysis, the crack displacements under normal loading and shear loading on the crack surface are uncoupled. For a crack under shear loading (mode II and III), the special case of the crack with
Yonglin Xu, Brian Moran, Ted Belytschko
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Theoretical analysis of three-dimensional interface crack

Science in China Series A: Mathematics, 1998
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Tang, Renji, Chen, Mengcheng, Yue, Jinchao   +2 more
openaire   +1 more source

Scattering by a planar three-dimensional crack

The Journal of the Acoustical Society of America, 1987
The scattering of a three-dimensional crack is formulated by the boundary integral equation method. A numerical scheme for solving the derived integral equations by using triangular boundary elements is described in detail. The computed results include the stress intensity factors and the scattered patterns for cracks having an elliptical shape.
W. Lin, L. M. Keer
openaire   +1 more source

Three-dimensional crack growth simulation using BEM

Computers & Structures, 1994
Abstract In this paper an application of dual boundary element method to the analysis of three-dimensional mixed-mode crack growth is presented. The crack growth processes are simulated numerically with an incremental crack-extension analysis based on the minimum strain energy density criterion and a fatigue crack growth law. For each crack extension,
Mi, Y., Aliabadi, M. H.
openaire   +1 more source

Three-dimensional crack problems

1984
The present chapter is devoted to the investigation of the growth characteristics of arbitrary cracks embedded in three-dimensional bodies. The general equations of the strain energy density criterion developed in chapter one are used to determine the critical loads for crack extension, as well as the new shape of the crack after propagation.
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Lattice theory of three-dimensional cracks

Journal of Applied Physics, 1976
The problem of the stability of a three-dimensional crack will be analyzed within a lattice-statics approximation. Hsieh and Thomson employed a similar approach for a two-dimensional crack. In that work the force was taken to be linear up to an arbitrary displacement and set equal to zero for larger displacements.
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Three-Dimensional Elastic Surface Cracks

1988
This paper discusses a variety of issues associated with the elastic fracture mechanics modeling of surface cracks; both analytical and experimental issues are addressed. The primary analytical focus is on the use of the boundary integral equation method for elastic fracture mechanics analysis. An advanced code is highlighted.
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Three Dimensional Effects in Interfacial Crack Growth

Applied Mechanics Reviews, 1990
An increase of interfacial toughness, associated with increases in in-plane or antiplane shear components, has been noted for a number of bimaterial combinations. Some recent results are reviewed which suggest that the toughening effect could not be completely accounted for by plastic dissipation, bulk viscoelastic dissipation or asperity shielding ...
K. M. Liechti, Y.-S. Chai
openaire   +1 more source