Abstract

In the past 53 years, many efforts have been contributed to develop and demonstrate the properties of reinforced composite materials. The ever-increasing use of composite materials through engineering structures needs the proper analysis of the mechanical response of these structures. In the proposed work, we have an exact form of Stress components and Displacement components to a Griffith crack at the interface of an Isotropic and Orthotropic half-space bounded together. The expression was evaluated in the vicinity of crack tips by using Fourier transform method but here these components have been evaluated with the help of Fredholm integral equations and then reduce to the coupled Fredholm integral equations. In this paper, we use the problem of Lowengrub and Sneddon and reduce it to dual integral equations. Solution of these equations through the use of the method of Srivastava and Lowengrub is reduced to coupled Fredholm integral equation. Further reduces the problem to decoupled Fredholm integral equation of 2nd kind. We get the solution of dual integral equations and the problem is reduced to coupled Fredholm integral equation. We find the solution of the Fredholm integral equation and reduce it to decoupled Fredholm integral equation of 2nd kind. The Physical interest in fracture design criterion is due to Stress and crack opening Displacement components. In the end, we can easily calculate the Stress components and Displacement components in the exact form.

Highlights

  • The exact expressions of the displacement and the stress components in the vicinity of crack-tips at the common interface of the one isotropic and other one orthotropic half-plane are evaluated by using Fourier transform method

  • Williams [1,3] solved the problem of the stress and displacement fields in the neighbourhood of crack tips by using the complex variable method

  • Rice and Sih [5] used R-integral approach to solve the problem of cracks in the bounded dissimilar materials

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Summary

Introduction

The exact expressions of the displacement and the stress components in the vicinity of crack-tips at the common interface of the one isotropic and other one orthotropic half-plane are evaluated by using Fourier transform method. Williams [1,3] solved the problem of the stress and displacement fields in the neighbourhood of crack tips by using the complex variable method. Lowengrub and Sneddon [11] solved the problem of a Griffith crack at the interface of two bounded isotropic homogeneous half-planes by using transform techniques. The problem of proposed work on a mixed boundary problem of the following type; An interior Griffith crack occupies the region y 0,0 x b and boundary conditions, see Fig. 1. Isotropic and orthotropic both planes are between the plain strain conditions and any type of physical quantities vanish, if x2 y2

Formulation
Solution of Dual Integral Equations
Solution of Fredholm Integral Equations
K14 K15
Physical Quantities
Displacement Components
Conclusions

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