| 齐鸣瑞，漆文凯，王文博.基于虚拟激励法的薄板随机振动分析[J].航空发动机,2018,44(4):21-25 |
| 基于虚拟激励法的薄板随机振动分析 |
| Random Vibration Analysis of Thin-panels Based on Virtual Excitation Method |
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| DOI： |
| 中文关键词: 傅里叶级数法 任意弹性边界条件 虚拟激励法 白噪声 薄板 航空发动机 |
| 英文关键词:Fourier series arbitrary elastic boundary conditions virtual excitation method white noise thin-panels aeroengine |
| 基金项目:南京航空航天大学研究生创新基地（实验室）开放基金（kfjj20160211）资助 |
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| 中文摘要: |
| 针对航空发动机薄壁构件在实际工作中受到的噪声影响的问题，基于虚拟激励法原理，利用改进的傅里叶级数法处理
位移函数和白噪声激励，对薄板进行了任意弹性边界条件下的随机振动响应分析。推导并计算了白噪声激励下薄板的位移响应功
率谱，将响应功率谱与ANSYS 自带谱分析模块结果进行对比分析，证明了改进方法的准确性。该方法使用簧代替经典边界条件，改
变弹簧的刚度系数组合可以高效准确地处理其他更复杂的结构以及边界条件 |
| 英文摘要: |
| To investigate the influence of noise on thin-panels of aeroengine in actual operation，the displacement function and white
noise excitation were processed by the improved Fourier series method based on the virtual excitation method，and the random vibration
response analysis of thin-panels was carried out under arbitrary elastic boundary conditions.The displacement response power spectrum of
thin plates was deduced and calculated under the white noise excitation，and the response power spectrum was compared with the results of
the ANSYS spectrum analysis module，the accuracy of the improved method was proved.This method used springs instead of classical
boundary conditions and changed the stiffness coefficient combinations of springs to deal with other more complicated structures and
boundary conditions efficiently and accurately |
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