热压罐成型过程中框架式模具温度场模拟与分析

Simulation and Analysis on Temperature Field of Frame Mold in Autoclave Process

为了研究复合材料构件成型模具温度场,本文以某型飞机壁板的热压罐固化工艺为例,通过模型简化,利用FLUENT等仿真软件建立模具温度场的数值模拟模型,并将模拟数据与实验数据进行对比。结果表明二者平均相对误差为7. 4%。此外通过仿真模拟一组以支撑板厚度为变量的实例,两组以U、V两个方向的支撑板厚度为变量的对照组,通过判断模具型板表面温度方差大小,研究了支撑板厚度对模具温度场分布的影响规律。结果表明,模具温度场的均匀性随着支撑板厚度的增加而逐渐降低,其中U向支撑板厚度的变化对温度场均匀性的影响比V向大。

In order to study the temperature field of the mold for forming composite material components,this article takes the autoclave curing process of a certain type of aircraft wall as an example. Through model simplification,a numerical simulation model of the mold temperature field is established by using simulation software such as FLUENT,and the simulation data and experiments are used for comparison.The results show that the average relative error is 7.4%.In addition,a set of examples with the thickness of the support plate as a variable and two control groups with the thickness of the support plate in the U and V directions were simulated. By judgment the surface temperature variance of the mold plate,the effect law of the thickness of the support on the influence of mold temperature field distribution plate was studied.The results show that the uniformity of the mold temperature field gradually decreases with the increasing of the thickness of the support plate,and the change of the thickness of the support plate in U direction has a greater effect on the uniformity of the temperature field than that in the V direction.