航空发动机转子在冲击载荷下的振动响应分析与试验

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振动与冲击 ›› 2023, Vol. 42 ›› Issue (22) : 339-344.

论文

聂卫健1，2，3，卢愈2，唐广2，3，杨晓光1，王金舜2，3，陈亚农2，3

作者信息 +

Analysis and test on the vibration response of an aero-engine rotor under impact load

NIE Weijian1,2,3, LU Yu2, TANG Guang2,3, YANG Xiaoguang1, WANG Jinshun2,3, CHEN Yanong2,3

Author information +

文章历史 +

摘要

考虑挤压油膜阻尼器非线性油膜力建立了转子的运动微分方程，将转子在冲击载荷下的振动响应分解为谐响应和冲击响应，分别建立了谐响应、冲击响应的有限元模型，并开展了振动响应计算分析。在振动台上开展了航空发动机转子在不同脉宽的垂向冲击载荷下的振动特性试验研究，获取了转子在冲击瞬时的振动响应，并与计算结果进行对比分析。研究结果表明在一定范围内，转子的振动响应随冲击脉宽变大而变小；与试验结果相比，振动响应计算误差在10.44%-20.00%之间。研究为冲击载荷下航空发动机转子振动响应分析和试验提供了方法，具有重要的工程应用价值。

Abstract

Considering the SFD nonlinear oil film force, the differential equation of motion of the rotor was established. The vibration response of rotor under impact load was decomposed into harmonic response and impact response. The finite element models of harmonic response and impact response were established respectively, and the vibration response was calculated and analyzed. Experimental study on the vibration characteristics of aero-engine rotor under vertical impact load with different pulse width was carried out on the vibration table. The instantaneous vibration response of the rotor under impact load was obtained and compared with the test results. The study shows that in a certain rang of pulse width, the vibration response of rotor decreases with the increase of pulse width. In addition, compared with the test results, the calculation error of vibration response is between 10.44%~20.00%. The study provides a method for vibration response analysis and test of rotor under impact load, and has important engineering application value.

导出引用

聂卫健1，2，3，卢愈2，唐广2，3，杨晓光1，王金舜2，3，陈亚农2，3. 航空发动机转子在冲击载荷下的振动响应分析与试验[J]. 振动与冲击, 2023, 42(22): 339-344

NIE Weijian1,2,3, LU Yu2, TANG Guang2,3, YANG Xiaoguang1, WANG Jinshun2,3, CHEN Yanong2,3. Analysis and test on the vibration response of an aero-engine rotor under impact load[J]. Journal of Vibration and Shock, 2023, 42(22): 339-344

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