Solution to the residual stress problem in orthotropic materials using genetic algorithms

Abstract:

The hole drilling method is an inverse problem technique used for the determination of residual stress in orthotropic materials. The use of displacement field isothetics in the form of simulated moiré fringes may be used to solve this problem using a least squares approach. One of the issues that results from this kind of approach is that as the number of parameters increases the search for a solution becomes less certain and is more time intensive. In an attempt to circumvent these issues the current paper examines the use of genetic algorithms. It is generally found that by taking an approach relying on genetic algorithms it is possible: (a) to achieve greater certainty in the assessment of parameters to obtain a global minimum; (b) to examine discontinuous and/or non-differentiable functions; and, (c) to better evaluate the stability of the algorithm.

Año de publicación:

2006

Keywords:

Fuente:

scopus