دانلود رایگان مقاله تمرکز تنش در گوشه های حفره چند ضلعی در صفحه محدود

abstract

A generalized formulation to determine the stresses around the polygonal shaped hole in anisotropic finite plate is presented in the paper. The stress concentration at the rounded corners of the polygonal hole in finite plate subjected to in-plane loading is derived using complex variable approach in conjunction with boundary collocation method. The influence of plate size, hole geometry and location, material anisotropy and loading conditions on the stress concentration around the polygonal hole is studied and presented in the paper. The results obtained through present method are validated by comparing with literature and finite element solutions.

4. Conclusion

The stress distribution around polygonal hole in finite laminated composite plate is obtained using complex variable method in conjunction with boundary collocation method. The attainment of well converged results in time efficient manner and ease of parametric study, make the boundary collocation method suitable for the solution of the present problem. The results obtained by present method are in close agreement with that of finite element solution and the literature. The corners of the polygonal shaped holes are the points of stress concentration in the plate. The number, location and the curvature of the corners significantly affect the stress field in the finite anisotropic plate. The stresses around the polygonal hole is also affected by plate size, material anisotropy and the loading direction. The present generalized solution is capable to produce the satisfactory results for infinite plate by considering large plate size and also for isotropic plate by considering suitable material properties.