Then the gradients of flutter speed and frequency of wing with respect to the design variables were deduced with analytical method.
使用解析方式推导得到机翼的临界颤振速度、颤振频率对于设计变量的灵敏度表达式。
The sensitivity formulas about natural frequency and flutter damp to structure parameters were discussed, and the math models about optimization design were established.
建立固有振动频率和颤振阻尼对结构参数的敏度公式，设计两种不同优化问题的数学模型。
The variation of aerodynamic parameters of cascade NACA0012 and PROF under different reduced frequency shows that the reduced frequency is an important factor that influences the flutter.
NACA0012和PROF叶栅在不同折合频率下气动参数随时间的变化表明，折合频率是影响叶栅颤振的重要因素。
This paper probes the features of the effect on the external stores jam flutter characteristics due to the variation of parameters of vibration frequency, flutter freedom and generalized mass.
探讨了由于振动频率、颤振自由度、广义质量等参数的变化对机翼—外挂干扰颤振特性影响的一些特点。
Computation of wing flutter for unsteady transonic flows in the frequency domain is studied in this thesis.
本文研究了机翼跨音速颤振的频域计算方法。
According to the principles and signal properties of flutter test, a new filtering algorithm in time-frequency domain is presented.
根据颤振试验的原理和观测信号特点，提出一种时频域滤波方法。
Chinese aircraft cnginccrs arc becoming intcrcsted in some strange localized vibration phenomena that occur during ground vibration test and flutter test: mode localization and frequency loci veering.
研究了某机简化模型线性振动的模态局部化现象，以及与此现象密切相关的频率曲线转向现象。
Authors presented a finite element (FE) model and frequency analysis method for analyzing 3-d full-mode flutter of long-span Bridges using ANSYS software.
提出了一种在ANSYS中直接分析大跨桥梁三维全模态颤振的有限元模型和频域方法。
Authors presented a finite element (FE) model and frequency analysis method for analyzing 3-d full-mode flutter of long-span Bridges using ANSYS software.
提出了一种在ANSYS中直接分析大跨桥梁三维全模态颤振的有限元模型和频域方法。
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