中文摘要：

采用分步求解的方法进行复合材料壁板的热颤振分析。先分析热效应产生的壁板附加刚度,再将壁板的热刚度效应引入到壁板颤振模型中进行壁板颤振分析。通过一块四边固支壁板的热颤振分析算例,验证了这种壁板热颤振分析方法的正确性。进而针对高速飞行器结构中的复合材料壁板热颤振问题,分析了三种不同铺层方式的复合材料壁板在受到面内均匀热载荷时颤振临界速度随温升的变化规律。结果显示：（1）层合复合材料壁板的铺层比例和铺层顺序对壁板的热颤振临界速度都有明显的影响;（2）温升可导致壁板颤振临界速度明显降低,且铺设方式不同,下降程度不同;（3）在颤振危险模态不发生变化时,壁板颤振临界速度随温升而下降的趋势近似呈线性关系。

英文摘要：

A step-by-step method for thermal flutter analysis of laminated composite panel is proposed. In this method, the thermal induced additional stiffness is obtained at first and then it is introduced into the governing equation of panel flutter. The flutter characteristics of a clamped panel with even temperature elevation are analyzed by this approach, the flutter boundary is obtained and compared with existing example by a maximum relative error of 3 %. Then the finite element model for a panel of hypersonic vehicle is built, and the effect of stacking sequence on the thermal flutter speed of the laminated composite panel with even elevated temperature is studied. The results show that the laminate orientations and stacking sequence have a significant effect on the thermal flutter speed of the panel both with and without thermal load. It is also found that the flutter speed is sensitive to the temperature elevation and varies approximately linear with the temperature elevation while the coupling modes are kept unchanged.