Affiliation:
1. Azerbaijan Technical University
Abstract
The paper proposes the problem solution for interaction of two following factors: perforated plate reinforcement by a stringer system and its loosening by a number of circular holes and two cracks along the x-axis near each hole. The hole and crack edges are free from external loads. The riveted plate is subjected to tension by strengthening ribs via constant stresses. The action of riveted reinforcing strengthening ribs is modeled by unknown concentrated forces applied to anchor points.An effective solution is proposed for the reinforcement by transverse strengthening ribs of plates weakened by stress concentrators (holes, cracks) under loading. The stress intensity and ultimate loads are found depending on geometrical and physical parameters of the problem.
Publisher
Tomsk State University of Architecture and Building
Reference10 articles.
1. Parton V.Z., Morozov E.M. Mekhanika uprugoplasticheskogo razrusheniya [Elastoplastic fracture mechanics]. Moscow: Nauka, 1985. 504 p. (rus)
2. Dowrick G., Cartwright D.J., Rooke D.P. The effects of repair patches on the stress distribution in a cracked sheet. Proc. 2nd Int. Conf. “Numerical Methods in Fracture Mechanics”. Swansea, 1980. Pp. 763–775.
3. Kravets V.S. Effect of breaks in riveted stringers on the elastic and limiting equilibrium of a cracked plate. Materials Science. 1999. V. 35. Pp. 339–348.
4. Mir-Salim-zade M.V. Fracture of an isotropic medium strengthened with a regular system of stringers. Mechanics of Composite Materials. 2007. V. 43. Pp. 41–50.
5. Mir-Salim-zade M.V. Rost kogezionnoi treshchiny v stringernoi plastine [Cohesive crack growth in a stringer plate]. Structural Mechanics of Engineering Constructions and Buildings. 2013. No. 4. Pp. 16–22. (rus)