Stress separation from photoelastic data by a multigrid method
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1998
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IOP Publishing Ltd.
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Abstract
An application of multigrid techniques for the separation of principal stresses in plane stress systems is presented. By establishing the equilibrium equations and determining the value of shear from photoelastic data a system of partial differential equations is obtained, which can be solved by applying a multigrid method. Multigrid methods are comparable to Fourier methods in efficiency and robustness and can be applied to processing areas of arbitrary shape.
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© 1998 IOP Publishing Ltd.
We thank Professor Eusebio Bernabeu, director of the Optics Department of the Universidad Complutense for
his help and continuous support. Also, we thank Hans Steinbichler, of Steinbichler Optotechnik GmbH, for his
technical assistance. This work has been partially supported by project MAT 95-0767 of the CICYT (Comisión
Interministerial de Ciencia y Tecnología).