【摘要】 采用有限元方法对复合材料对称玻璃钢大锥环内固化成型进行研究,基于ANSYS仿真软件编写了对称玻璃钢大锥环内固化过程仿真程序,实现玻璃钢大锥环内固化过程温度和固化度变化的数值模拟。结果表明,数值模拟得到的结果符合内固化变化规律;贴近实验数据,模拟准确有效;根据仿真结果得到了玻璃钢大锥环内固化温度变化规律、固化峰值温度随厚度变化规律及锥环不同厚度固化度的变化规律,分析了600~660MW汽轮发电机的玻璃钢大锥环采用内固化工艺能达到完全固化的厚度范围。该研究为玻璃钢大锥环实现高效、低成本成型提供了新方法。更多还原

【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.更多还原