Abstract
The twelfth chapter concerns with studying stress concentration near notches in quasi-orthotropic bodies, that is bodies with the special type of orthotropy when the characteristic equation has multiple roots. Basic relationships of plane elasticity theory for such media are presented and singular integral equations of first basic problem of theory of elasticity for a region containing curvilinear cracks are stated. Solutions for eigenvalues of a quasi-orthotropic wedge were obtained. Corresponding solutions for quasi-orthotropic plane with a rounded V-shaped notch were constructed. The interrelation between stress concentration factor and stress intensity factor in quasi-orthotropic plane with rounded or sharp V-shaped notches had been established. On this basis, the authors had derived stress intensity factors in V-shaped tip of two-sectional kinked crack using the superposition technique.
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