关键词: 玻璃钢大锥环, 对称成型, 内固化工艺, ANSYS模拟

Abstract: The forming of FRP large cones with internal curing process is studied with FEM (finite element method). The internal curing process simulation program is written based on ANSYS, and the temperature and degree of curing change is numerically simulated. The result shows that the simulation result corresponds to internal curing change law, approximating the experiment data, which proves the accuracy of the simulation. During the curing process of the FRP large cones, the heat passes from the inner layer of the composite to its outer layer and the peak temperature in the curing process becomes higher from the inner layer to outer layer. In the range of curable thickness, curing time becomes shorter gradually from the inner layer to outer layer. When the symmetrical FRP large cones get thicker, the time reaching to peak gets later, the peak becomes higher and the curing time becomes later. FRP large cones of 600~660 MW steam turbine generator completes solidified part for the thickest 7 cm in the internal hear-curing process according to the simulation result. More than 7 cm parts of FRP large cones can′t receive heat, because the FRP large cones is too thick and inner layer cured parts influence on composite performance of heat conduction. Within the prescribed time of internal heat-curing process, FRP large cones large diameter and small diameter can′t synchronously complete task of curing. Parts of no internal heating curing can realize full curing after curing process.

Key words: FRP large cones, symmetrical shape, internal heat-curing, ANSYS simulation