Hypersingular Integral Equations and Applications to Porous Elastic Materials

Details Hypersingular Integral Equations and Applications to Porous Elastic Materials Hypersingular Integral Equations and Applications to Porous Elastic Materials

2003-02-23

arxiv.org/abs/math-ph/0302055v1

Physics

Mathematical Physics

4 Pages, Proceedings Of Thermal Stress 2003

Scientific paper

In this paper a treatment of hypersingular integral equations, which have relevant applications in many problems of wave dynamics, elasticity and fluid mechanics with mixed boundary conditions, is presented. The main goal of the present work is the development of an efficient direct numerical collocation method. The second part of the work is devoted to the application of the method to the porous elastic materials. This part deals with classical problem for cracks dislocated in a certain very specific porous elastic material, described by a Cowin-Nunziato model. By applying Fourier integral transform the problem is reduced to some integral equations. For the plane-strain problem we operate with a direct numerical treatment of a hypersingular integral equation. We also study stress-concentration factor, and investigate its behaviour versus porosity of the material. At the end we investigate the possibility to extend the results in the thermoelastic case.

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