Two-parameter Concept For Anisotropic
Cracked Structures
Author(s)
P. Brož
Abstract
For two-dimensional anisotropic elasticity the M-integral was evolved, in terms
of the boundary element method serving for numerical determination of the T
stress which represents a notable parameter for fracture evaluation of cracked
solid bodies on top of the stress intensity factor. T-stress issues for the crack face
pressure instances are employed as the reference solutions to infer weight
functions, e.g. to obtain T-stress results for thick-walled cylinders weakened by
an internal edge crack subject to any complicated loading. Some examples are
demonstrated.
Keywords: complex stress distribution, crack face, material anisotropy, remote
load, self-regularization.
1 Introduction
Besides the stress intensity factor, the T-stress is the other parameter reflected in
fracture evaluation. The path-independent M-integral approach to interpret the
T-stress, in conformity with Shah et al. [1], is augmented to use plane, in general
anisotropic cracked constituents. It is realized in the boundary element method.
An example is demonstrated to indicate the accuracy of the quantification
formulated and its suitability. The numerical projects derived are illustrative of
the fact that material anisotropy has indeed a substantial influence on the
T stress.
To assess the M integral, conceptions for the stresses and displacements at
interior points are required. When being the interior points very close to the
boundary, some inconveniences in the standard BEM representation arise.
A technique to get over this near-singularity problem was issued as early as
Keywords
complex stress distribution, crack face, material anisotropy, remote
load, self-regularization.
Related Book
Other papers in this volume
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