概念设计阶段机翼流固弱耦合设计系统开发

针对机翼概念设计阶段存在的气动载荷与结构变形之间的耦合效应问题,结合机翼概念设计阶段模型简化、快速估算的特点,提出了基于弱耦合迭代的流-固耦合效应的解耦方案。通过改进基于径向基插值函数的流-固耦合数据交换技术,采用基于最小变形能的气动载荷分布估算及惯性载荷的分布算法等技术,实现了气动载荷等效转换为结构载荷;并开发和验证了面向概念设计阶段的机翼气动-结构耦合设计原型系统,为实现机翼的气动结构耦合设计提供一种可行的替代方案,达到了提高气动载荷与结构分析载荷转化的效率,避免求解复杂的多学科分析模型的目的。

The system development of wing design with fluid-Solid weakly coupling method

For fluid-structure coupling effect of wing design at the conceptual design stage, it has be advised a decoupling scheme based on weakly couple-iterative method with rapid-estimation and simplified of wing conceptual design model. An improved data exchange technology based on RBF interpolation function have been proposed to solve the fluid-solid coupling, an estimation algorithm of aerodynamic load distribution based on the minimum deformation and an inertia load distribution algorithm also have been used for the aerodynamic load equivalent into structural loads. Then the development and validation of wing design prototype system of aerodynamic-structure coupling at the conceptual design stage. Thus, it provides a viable alternative to implement fluid-structural coupling design of wing.