Hole drilling method in photoelasticity - application of an optimization approach

Abstract:

This paper presents a least squares inverse problem solution for the case of photoelastic fringes around a hole in a biaxially loaded plate for two problems. Problem 1 relates to an infinite plate in which the circular hole is drilled first and then the loads are applied. Problem 2 is the residual stress problem in which the hole is drilled after the biaxial load is applied to the infinite plate. This hybrid experimental numerical approach permits utilization of as many points of information as desired, away from the edge of the hole and the axes of symmetry. Also, no a priori knowledge is needed as to the orientation of the principal axes of symmetry. Its implementation, using simulated photoelastic fringes, yields accurate pbkp_redictions of the magnitude and orientation of the far field stresses.

Año de publicación:

2000

Keywords:

Fuente:

scopus