| 1. | Analysis of panel flutter in high speed flight vehicles 高速飞行器壁板颤振的分析模型和分析方法 |
| 2. | Panel flutter is a classical supersonic aeroelastic phenomenon that is usually accompanied by temperature elevation on the outer skin of high - speed aerospace vehicles 壁板颤振是发生在高速飞行器上的一种典型的超音速气动弹性现象。 |
| 3. | With this kind of element , panel flutter analysis can be performed not only for thin plates but for the middle - thickness laminates 由于min3单元计及了壁板的横向剪切效应,因此这种壁板颤振分析方法不仅可以针对薄板,而且可以针对具有中等厚度的复合材料层合板。 |
| 4. | The research activities of panel flutter are summarized comprehensively . the mechanism of panel flutter and the analysis method of panel flutter are described in details 全面综述了迄今为止国内外学者对壁板颤振的研究成果,分析总结了壁板颤振机理和壁板颤振研究的方法。 |
| 5. | The finite element equation for linear and nonlinear panel flutter analysis using the triangular three nodal mindlin element ( min3 ) which considers the first order shear strain in the plate is formulated ( 3 )使用三结点三角形mindlin板单元( min3单元)推导了壁板热颤振的有限元方程。 |
| 6. | The aim of this thesis is to analyze the panel flutter mechanism and establish a mechanical model for panel flutter analysis and this work is the basis of panel flutter control studies 本文的目的就是对壁板的热颤振特性进行系统深入的分析和研究,为高速飞行器的壁板结构的防颤振设计和壁板颤振抑制的研究建立理论基础。 |
| 7. | The newmark method is used to solve the panel flutter equations in time domain . the linear flutter boundaries are determined and the effect of temperature on flutter boundaries is analyzed 编制了壁板颤振分析的有限元程序,采用newmark方法在时域中求解了壁板的线性颤振方程,确定了壁板的颤振边界,分析了温度对壁板颤振边界的影响。 |
| 8. | The nonlinear panel flutter equations are also solved in time domain . the limit cycle flutter characteristics of nonlinear panel flutter are investigated and the effect of temperature and airflow speed on the nonlinear panel flutter characteristics is studied 通过对非线性壁板颤振方程的时域求解,研究了壁板的极限环颤振特性,得到了温度、气流速度等因素对非线性壁板颤振特性的影响规律。 |
| 9. | The mechanical model of panel flutter considering thermal effect is established by the use of von karman large deflection strain - displacement formulations , quasi - steady first - order piston theory aerodynamics and quasi - steady thermal stress theory . ( 3 ) 采用vonkarman大变形应变?位移关系、基于一阶活塞理论的气动力公式以及准定常的热应力理论建立了考虑热效应时复合材料壁板颤振的力学模型。 |
| 10. | At first , the finite element formulation is presented to determine the flutter characteristics of laminated panels at elevated temperature . then both the linear and nonlinear panel flutter characteristics are analyzed . the panel flutter boundaries are finally determined and the effect of temperature , airflow speed , etc , on the panel flutter characteristics is analyzed 为此,本文首先建立了复合材料壁板热颤振的有限元模型并对受热壁板的线性和非线性颤振特性进行了研究;最后确定了壁板的颤振边界,分析了温度、来流速度等因素对壁板颤振特性的影响规律。 |