节点文献
对MSC/NASTRAN气动热弹性考题的探讨
A Discussion on the Aerothermoelastic Calculating Example in MSC/NASTRAN Program
【摘要】 在MSC/NASTRAN气动弹性分析用户指南68版中,提供了一气动热弹性考题HA15-3A。按照该考题的计算结果,150(相当于65.5℃)时的颤振速度约为零度时的三分之一。这么大的温度效应似乎令人难以置信。为此,本文对该考题计算结果进行了分析和探讨。最后,作者认为,上述计算结果尽管是特殊的或偶然的,但它并非是不可能的。
【Abstract】 An aerothermoelastic calculating example, HA15 3A, is presented in MSC/NASTRAN Aeroelastic Analysis User’s Guide, Version 68. In the calculating results of this example, the flutter speed for 0 is about three times faster than that for 150. Such large temperature effect on flutter speed seems to be impossible. For that reason, this paper analyzes and discusses above calculating results. Finally, the author thinks that these calculating results, although particular to this example or accidental, are not impossible.
【关键词】 气动弹性力学;
颤振测量;
频率;
模型;
【Key words】 Aerothermoelasticity; Flutter speed; Natural frequency; Wing model.;
【Key words】 Aerothermoelasticity; Flutter speed; Natural frequency; Wing model.;
- 【文献出处】 系统工程与电子技术 ,Systems Engineering and Electronics , 编辑部邮箱 ,1998年08期
- 【分类号】V414
- 【被引频次】2
- 【下载频次】152