HYBRID STRESS-ANALYSIS OF VISCOELASTIC BODY USING PHOTOVISCOELASTIC BIREFRINGENCE

The Photoviscoelastic technique as an experimental viscoelastic analys is is very complicated. The FEM and other methods as numerical viscoel astic analyses are not always reliable. An experimental and numerical hybrid stress analysis for a viscoelastic body is proposed in this pap er. In this hybrid method, the experimental photoviscoelastic birefrin gence and the numerical birefringence are compared for the purpose of confirming the reliability of numerical results of stress and strain i n a viscoelastic body. As an example, the thermal stress generated in an epoxy resin beam cooled rapidly is analyzed by this hybrid method.