陶瓷基复合材料整体叶盘振动仿真分析
Vibration Simulation Analysis of Ceramic Matrix Composite Turbine Rotor Integral Blade-Disk

DOI: 10.12677/OJAV.2021.91006, PP. 46-52

Keywords: 陶瓷基复合材料，整体叶盘，固有频率
Ceramic Matrix Composites (CMCS), Integral Blade-Disk, Natural Frequency

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Abstract:

对陶瓷基复合材料整体叶盘结构振动特性仿真分析，首先对整体叶盘的叶片单独进行固有频率计算和模态分析，获得叶片的前4阶模态。其次对去除叶片的轮盘进行振动仿真分析，计算给出前4阶模态振型及对应的固有频率。最后对整体叶盘进行计算，得出整体叶盘的前8阶固有频率及其对应振型。由仿真计算结果可知：叶片对整体叶盘的振动模态有很大的影响。叶片与轮盘的耦合振动，使得叶盘形成的几个振型与轮盘本身的振型相同，但固有频率不一样的模态。
The vibration characteristics of ceramic matrix composites (CMCs) monolayers were simulated and analyzed. Firstly, the natural frequency calculation and modal analysis of the monolayers were carried out, and the first four modes of the monolayers were obtained. Secondly, the first four modes and their corresponding natural frequencies are calculated by the vibration simulation analysis of the wheel with the blades removed. Finally, the first 8 order natural frequencies and corresponding modes of the whole bladed disc are calculated. The simulation results show that the blade has a great influence on the vibration mode of the whole blade disc. The coupled vibration of the blade and the wheel causes several modes formed by the blade disc to have the same mode shapes as the wheel itself, but different natural frequencies.

References

[1]	张原, 郁大照, 张浩然. 自由涡轮叶片/轮盘耦合振动特性分析[J]. 航空发动机, 2011, 37(6): 21-25.
[2]	高德平. 轮盘及带叶片轮盘振动分析方法[J]. 南京航空航天大学学报, 1983(1): 154-165.
[3]	罗潇, 徐友良, 郭小军, 等. 涡轮发动机用陶瓷基复合材料涡轮转子研究进展[J]. 推进技术, 2021, 42(1): 230-240.
[4]	武立明, 曹树谦. 转子运动激励下叶片的振动特性分析[J]. 机械工程学报, 2019, 55(19): 92-102.
[5]	Jones, R.H., Giancarli, L., Hasegawa, A., et al. (2002) Promise and Challenges of SiC/SiC Composites for Fusion Energy Applications. Journal of Nuclear Materials, 307, 1057-1072. https://doi.org/10.1016/S0022-3115(02)00976-5
[6]	Reynaud, P. (1996) Cyclic Fatigue of Ceramic-Matrix Composites at Ambient and Elevated Temperatures. Composites Science &Technology, 56, 809-814. https://doi.org/10.1016/0266-3538(96)00025-5
[7]	马晓红, 田文强, 夏燕茂. 二维编织复合材料的结构及力学性能研究[J]. 上海纺织科技, 2016, 44(5): 27-29.
[8]	王奇志, 林慧星, 许赟泉. 二维编织陶瓷基复合材料偏轴拉伸力学性能预测[J]. 复合材料学报, 2018, 35(12): 3423-3432.
[9]	王赛. 陶瓷基复合材料涡轮转子叶片的宏细观结构设计[D]: [硕士学位论文]. 南京: 南京航空航天大学, 2019.
[10]	刘政, 王建军. 单-厚盘转子过两阶临界转速的瞬态振动分析[J]. 北京航空航天大学学报, 2015, 41(11): 2144-2157.
[11]	黄爱萍. 轮盘振动特性试验及共振转速特性分析[J]. 测控技术, 2007, 26(4): 14-15.
[12]	由于, 杭超, 高翔, 等. 航空发动机轮盘振动模态测试技术研究[J]. 机械设计, 2019, 36(S1): 283-285.

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