CAD/CAE/CAM INTEGERATED STUDY FOR FILAMENT WINDING PRESSURE VESSELS

In this paper,the dynamic simulation for filament winding process and stress analysis of pressure vessel are programmed by APDL parametric language. The practical winding parameter can be applied directly to stress analysis. After analysis, the simulated data can be used to numerical control(NC) winding machine. Non geodesic trajectory mandrel rotation and payout eye motion equations for fiber reinforced composite pressure vessels are derivated by theory of differential geometry. Geometric nonlinear and physic nonlinear are considered. The incremental stress strain relations for a nonlinear orthotropic lamina are applied. Reduction of material properties in the layer level is considered in progressive failure analysis. The test is finished for longitudinal flexural stiffness degradation. The result shows that the longitudinal flexural stiffness degradation is an important factor on the deformation at axial direction of fiber reinforced composite pressure vessels.