A method for the assignment of zeros using frequency response functions
Yükleniyor...
Tarih
2024
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer Heidelberg
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
PurposeIn many engineering structures, undesirable harmonics can occur due to changes in operating conditions. The effects of these unwanted harmonics can be eliminated by assigning the zeros of point or cross Frequency Response Functions (FRFs) of the structure to the frequencies of the unwanted harmonics. In this study, a method is proposed for assigning the zeros of point or cross FRFs to particular frequencies.MethodsThe method is based on Sherman-Morrison (SM) formula known in matrix theory. The inverse structural modification problem was investigated by making spring modifications on a structure to assign zeros.ResultsThe required modifications are calculated by solving the set of equations containing nonlinear combinations of the spring coefficients.ConclusionThere is no need for a physical or modal model of the structure because FRFs are used directly in the method. Therefore, it is quite practical in applications. The accuracy and efficiency of the presented method are illustrated by different numerical simulations and successful results are obtained.
Açıklama
Anahtar Kelimeler
Inverse structural modification, Frequency response function, Sherman-morrison formula, Zeros assignment, Structural dynamic analysis
Kaynak
Journal of Vibration Engineering & Technologies
WoS Q Değeri
N/A
Scopus Q Değeri
Q2
Cilt
Sayı
Künye
Hüseyinoğlu, M. (2024). A method for the assignment of zeros using frequency response functions. Journal of Vibration Engineering and Technologies, 1-10.
