Crack initiation at the rectangular step notch surface under combined loading |
| |
Authors: | J J Golecki J D Suzdalnitsky |
| |
Institution: | 1.Quality Assurance and Reliability, Technion, Haifa, 32000, Israel?e-mail: iosef@tx.technion.ac.il,IL;2.Faculty of Civil Engineering, Technion – Israel Institute of Technology, Haifa, 32000, Israel,IL |
| |
Abstract: | Summary Under external forces acting on the face of a notch, cracks originate at corners, and the system is liable to fail. An analysis
is presented of the stress field in the neighborhood of the notch tips, based on the integral representation of the biharmonic
solution and on numerical methods. Computations were performed for constant loading or constant displacement distributed along
one face of the notch. The coefficients in the principal terms of the asymptotic formulae for the circumferential and shear
stresses depend on the angle and height of the notch face and on the boundary conditions. The maximal values of these coefficients
determine the stress intensity factors for the opening and shear modes. The angles corresponding to the maximal values of
the intensity factors indicate the directions of initiation of opening and sliding cracks.
Received 30 May 2000; accepted for publication 3 April 2001 |
| |
Keywords: | Crack Fracture Notch Numerical Methods Stress Intensity Factor |
本文献已被 SpringerLink 等数据库收录! |
|