The singularities that we consider are the characteristic non-smooth solutions of the equations of linear elasticity in piecewise homogeneous media near two dimensional corners or three dimensional edges. We describe here a method to compute their singularity exponents and the associated angular singular functions. We present the implementation of this method in a program whose input data are geometrical data, the elasticity coefficients of each material involved and the type of boundary conditions (Dirichlet, Neumann or mixed conditions). Our method is particularly useful with anisotropic materials and allows to ''follow" the dependency of singularity exponents along a curved edge.
Publié le : 2001-07-05
Classification:
Singularity exponent,
Edge singularities,
Anisotropic elasticity,
Stress concentration,
Material interface,
[MATH.MATH-NA]Mathematics [math]/Numerical Analysis [math.NA],
[SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph],
[PHYS.MECA.MEMA]Physics [physics]/Mechanics [physics]/Mechanics of materials [physics.class-ph]
@article{hal-00276711,
author = {Costabel, Martin and Dauge, Monique and Lafranche, Yvon},
title = {A fast semi-analytic method for the computation of elastic edge singularities},
journal = {HAL},
volume = {2001},
number = {0},
year = {2001},
language = {en},
url = {http://dml.mathdoc.fr/item/hal-00276711}
}
Costabel, Martin; Dauge, Monique; Lafranche, Yvon. A fast semi-analytic method for the computation of elastic edge singularities. HAL, Tome 2001 (2001) no. 0, . http://gdmltest.u-ga.fr/item/hal-00276711/