带柔性部件飞行器刚性耦合系数矩阵优化算法

Rigid Coupling Coefficient Matrix Optimizaition Algorithm for Aircraft with Flexible Components

针对目前飞行器刚性耦合系数矩阵算法中按照单元节点规律排列的质量矩阵数据处理难度大,运算维度高的问题,本文提出一种非离散化方法的刚性耦合系数矩阵优化算法,利用在三维模型中可以直接获取的柔性部件质量特性,替代高维度的质量矩阵参与计算,避免了模型离散化误差,在简化刚性耦合系数计算流程的同时,具有提高计算结果准确度的效果,增强了工程设计中的便利性.

The calculation of the rigid coupling coefficient matrix of the aircraft is complex and time-con-suming as the finite element method requires operations of data in the high-dimensional mass matrix ar-ranged with the element nodes.An optimization algorithm based on non-discrete method is proposed in this paper.The inertia characteristics of flexible components of the three-dimensional model could be di-rectly obtained in this calculation,and replace the high-dimensional mass matrix.The error from model discretization could be also avoided.The calculation process is simplified and the accuracy of the calcula-tion results is also improved,which brings convenience in engineering design for the aircraft.