Paper number 1218
|INFLUENCE OF THE THERMAL DEPENDENT MATRIX PROPERTIES ON THE RESIDUAL STRESS DISTRIBUTION IN A MODEL COMPOSITE|
A. Klisch1, B. Fiedler2 and K. Schulte1
1Technical University Hamburg-Harburg, Denickestraße 15, 21071 Hamburg, Germany
2Mesoscopic Materials Research Center, Graduate School of Engineering, Kyoto University, Sakyo-Ku, Kyoto 606-8501, Japan
|Summary||Usually, the resin has a significantly higher thermal elongation than the reinforcing fibres. This mismatch leads, during the curing process, to thermal residual stresses. It will be shown that values of thermal residual stresses in a fibre reinforced composite strongly depend on the stiffness behaviour of the resin. Among others the stiffness of the resin is a function of temperature and strain. The influence of the thermal dependent matrix stiffness was examined by a comparison of finite element analysis and photoelastic examination. For the implementation of the non-linear material behaviour into the FEA-Program the results of tensile tests and thermal mechanical analysis were fitted with suitable mathematical functions. The results of the FEA calculations with thermal dependent matrix properties are in good comparison with the results from the photoelastic analysis.
||Keywords|| thermal dependent material properties, finite element analysis, photoelastic analysis, glass fibre, epoxy resin.
Theme : Mechanical and Physical Properties
[ HOME ] [ BACK ]