Results 221 to 230 of about 21,021 (266)

Three-Dimensional Analysis of Laminates With Cross Cracks

Journal of Applied Mechanics, 1988
An approximate 3-dimensional analysis to study the effects of a system of transverse and longitudinal matrix cracks in cross-ply laminates is given. The method considers a repeating unit cell containing three subcells in every one of which the displacement vector is expanded to second order.
Aboudi, J., Lee, Shi-Wei Ricky, Herakovich, C.T.   +2 more
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Three-Dimensional Cracks: An Introduction

1996
In the previous chapters the solution of two-dimensional and axi-symmetric crack problems have been examined in detail by employing the technique of distributing strain nuclei (in the form of dislocations or dislocation dipoles). Although the two-dimensional crack models give a good approximation to crack geometries encountered, most defects or cracks ...
D. A. Hills, P. A. Kelly, D. N. Dai, A. M. Korsunsky   +3 more
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Three‐dimensional crack analysis using singular boundary elements

International Journal for Numerical Methods in Engineering, 1989
AbstractA multi‐domain method of solving three‐dimensional elastic crack problems in an infinite elastic body using the boundary element method is proposed. The displacement and traction behaviours near a crack front are incorporated in special crack elements.
Jia, Z. H., Shippy, D. J., Rizzo, F. J.
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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
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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
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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
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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.
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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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