【作者】 赵飞；

【导师】 鲍福廷；

【作者基本信息】 西北工业大学 ， 航空宇航推进理论与工程， 2004， 硕士

【摘要】 本文系统地研究了固体火箭发动机金属壳体CAD系统的组成，应用面向对象技术和大型有限元分析软件ANSYS的二次开发技术建立开发了固体火箭发动机金属壳体设计、计算与分析系统，较为成功地解决了如下几个关键问题： 1．为固体火箭发动机金属壳体设计提供了一个界面友好、交互性强、通用性好的设计工具与集成化的设计环境，用户可以在该设计环境中完成设计方案的选择、性能要求的确定、各部件的设计及最后的性能计算和分析等金属壳体设计的整个流程，与以往的手工设计和其它设计方法相比，大大提高了设计的效率，而且整个设计结果以单个文件的形式保存，易于管理和查看。 2．该系统集成了目前工程上常用的金属壳体的设计与计算方法，提供了多种金属壳体的结构形式和连接方式，具有很强的实用性。 3．利用图形技术对金属壳体结构进行了平面绘图与三维实体造型显示，系统的可视化程度高。对于质量特性的计算采用了离散积分的方法与发动机结构的图形构造结合起来，从而保证了数据的内在统一性并可以达到较高的计算精度。对壳体结构的构造采用参数化的方法，通过一系列几何参数值来确定结构的具体的形式，参数改变后可以立即重新生成新的图形。 4．对ANSYS进行二次开发，利用ANSYS程序提供的参数化设计语言(APDL)和ANSYS的批处理模式对ANSYS进行封装，编制该CAD软件与ANSYS的接口程序，用户可以在该CAD软件中从后台调用ANSYS核心计算程序进行金属壳体结构分析和绝热层传热分析。 整个系统采用C++Builder5.0作为主要开发环境，运用面向对象的思想将壳体分成各组件，然后通过不同的组件进行组合可以构成不同的壳体结构，这样使得本系统的通用性得到很好的体现，并进一步保证了系统的可扩展性，新结构类型的壳体只需要添加没有的组件就可以了。软件模块的独立性、动态链接性和可维护性都得到很好的体现。更多还原

【Abstract】 This thesis fully discusses the Solid Rocket Motor (SRM) metal case CAD system. A SRM metal case design, calculation and analysis system is developed by use of Object-Oriented Programming (OOP) technique and powerful finite element analysis software ANSYS. Several key techniques have been solved successfully. The details are as follows:1. This software provides a user friendly, interactive, general tool and an integration environment for the design of SRM metal case, which has overcome the deficiency of handwork and other methods. By use of this software, the whole design process, such as selecting the design scheme, confirming the performance, designing each part, calculating and analyzing the performance can be fulfilled. The whole design results can be saved as a single file, which is easily managed.2. The engineering design methods of metal case have been integrated. Many structure configurations and connection types of metal case have been provided. And this software is very practical.3. Plane and three-dimensional graphics are plotted by use of graphics technique, which makes this software well visualized. The computation of mass properties adopts the discrete integration combined with the graphic construction of the SRM structure, assuring the internal data coherence. The parameter technique is adopted, to plot metal case structure, the graphics is decided by a series of geometric parameters, and new graphics can be repainted immediately.4. Encapsulate ANSYS to this software by use of the ANSYS batch mode and ANSYS Parametric Design Language (APDL), and develop the interface with this software. Users can transfer the kernel calculation program in the background to analysis mechanics and insulation heat transfer.The whole system adopts C++Builder5.0 as the main developing environment. The system divides metal case into some basic components by use of OOP, and then comprises different type of metal case by different combination, which demonstrates the universality of this system, also guarantees the extensibility of system. Here only new components are needed for a new type of metal case structure. This module has good independence, dynamic linking and maintainability.更多还原