【摘要】 准确的有限元模型是结构动力学分析强有力的工具。采用模态试验和有限元建模相结合的综合建模技术,采用结构质量最小为目标,以试验模态作为约束,分别以物理和几何参数为变量的结构动力学优化设计,对初始的有限元模型进行动力学优化。以GARTEUR飞机模型为例,在仅有试验模态参数、几何尺寸条件下,得到结构真实动力学特性的有限元模型。更多还原

【Abstract】 Accurate finite element model is powerful tool of structural dynamics analysis.The combination of model testing and finite element modeling is used in this paper.the initial finite element model is optimized by changing structural physical or geometrical parameters with minimum structural quality as a target,experiment model parameters as constraints.Taking GARTEUR aircraft model for example,Under the condition of only experimental modal parameters and geometry conditions left,the finite element model of structural with the real dynamic characteristics is obtained.更多还原