典型结构静叶分析及程序实现

为了计算静叶在热负荷、压力负荷和相邻构件作用下所产生的应力、变形以及它们的固有频率和振型,研制了ST AP程序,由静力和动力分析两个子系统构成。该程序可在DOS系统支持下在IBM-PC及其兼容机上运行,并具有下列显著特点:(1)具有方便的前处理功能,只需要型值点的几何及物理特性和荷载数值即可生成分析所用的全部数据。(2)能处理集中荷载、分布荷载、温度荷载等多种荷载及其组合。(3)具有完善的后处理功能,计算结果可用数值、图形等多种形式输出。 

ANALYSIS FOR TYPICAL STATOR BLADE STRUCTURE AND ITS IMPLEMENTATION

A program named the STAP for the stator blade analysis with preprocessor and postprocessor is briefly introduced.Using the mesh generation and substructure assemblage functions of the STAP,it is possible to accomplish conveniently the stress and vibration analyses of the stator blade if only the coordinates of points on the contour of a blade and a few of mechanical properties of materials are inputted.Since mechanical properties,particularly Youngs modulus and coefficient of thermal expansion,are temperature dependent,it is very important to take this fact into account for calculating the stress of a cooled gas turbine blade.For this end the STAP provides for user a finite element methed with a temperature dependence on the properties.In structure modelling,in order to reduce the number of unknown variables and to describe the complex boundary conditions,the STAP is possessed of the function of Master Slave relations between the nodal displacements.