C/SiC箱型结构的热模态试验研究

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振动与冲击 ›› 2020, Vol. 39 ›› Issue (18) : 209-214.

论文

C/SiC箱型结构的热模态试验研究

于开平1，郑博文1，陈晓岚2，李昕2

作者信息 +

Thermal modal test of a C/SiC box structure

YU Kaiping1,ZHENG Bowen1,CHEN Xiaolan2,LI Xin2

Author information +

文章历史 +

摘要

飞行器速度随着科学技术的发展不断提高，导致飞行器面临着极其严酷的高温环境，因此在地面上的热模态试验具有重要意义。作为具有应用前景的一种结构，箱型结构具有重要的研究价值。论文以箱型结构的C/SiC典型构型件为研究对象，对其在高温环境中的振动特性进行了研究。结合现有的试验技术，论文提供了一套热模态试验的方案，给出了C/SiC典型构型件在高温环境中的模态频率和模态振型。其优点在于能够最大程度的保证试验件的独立完整性，不会在激励和测量的过程中产生附加刚度、附加质量等影响。希望论文的研究为箱型结构在高温环境中的模态研究提供参考。

Abstract

As the speed of the aircraft increasing with the development of science and technology, the aircraft faces an extremely harsh high-temperature environment. Therefore, the thermal modal test on the ground is of great significance. As a structure with application prospects, the box structure has important research value. In this paper, the vibration characteristics of a C/SiC typical component, which is a box-type structure, in the high-temperature environment were studied. Combined with the existing test technology, this paper provides a set of thermal modal test schemes and gives the modal frequency and modal shapes of C/SiC typical component in the high-temperature environment. The advantage of this method is that there are no additional stiffness and additional quality generated during the excitation and measurement process. The research in this paper provides a reference for the modal study of box-type structures in the high-temperature environment.

导出引用

于开平1，郑博文1，陈晓岚2，李昕2. C/SiC箱型结构的热模态试验研究[J]. 振动与冲击, 2020, 39(18): 209-214

YU Kaiping1,ZHENG Bowen1,CHEN Xiaolan2,LI Xin2. Thermal modal test of a C/SiC box structure[J]. Journal of Vibration and Shock, 2020, 39(18): 209-214

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