机翼结构有限元的快速建模及自动化调整

Rapid wing structural finite element modeling and automated adjustment

为提高总体设计的质量和效率,研究了在OpenCADS(Open Conceptual Aircraft Design System)这一按照面向对象方式进行数据组织的计算机辅助飞机总体设计系统中进行飞机机翼结构有限元快速建模及自动化调整的措施.提出了采用梁单元和壳单元进行概念设计中机翼结构有限元的等效处理方法,定义了以翼肋为标定的结构有限元节点及各单元的编号规则,设计了相关的数据类组织与应用逻辑,以此为基础实现了机翼结构有限元模型的自动化调整,为概念设计阶段进行多学科设计优化奠定了基础.通过设计实例及其应用验证了方法的有效性和可靠性.

In order to improve the quality and efficiency of civil airplanes conceptual and preliminary design, the method of wing structural finite element modeling and automated adjustment in a computer aided air-craft conceptual/preliminary design system called open conceptual aircraft design system（OpenCADS） which organizes data in an object-oriented approach was studied. The equivalent method of wing structural finite ele- ment modeling using beam elements and shell elements in conceptual design was proposed. The finite element nodes which were calibrated by ribs and number rule of the elements were defined. The organization and application logic of related data classes was designed and wing structural finite element modeling and automated adjustment were implemented which laid the foundation for multi-disciplinary design optimization in aircraft conceptual design phase. An example was presented to illustrate the effectiveness and reliability of the method proposed.