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A method of finding the principal modes of nonlinear vibration systems and their stabilities - MaRDI portal

A method of finding the principal modes of nonlinear vibration systems and their stabilities (Q1094901)

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scientific article; zbMATH DE number 4026887
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English
A method of finding the principal modes of nonlinear vibration systems and their stabilities
scientific article; zbMATH DE number 4026887

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    A method of finding the principal modes of nonlinear vibration systems and their stabilities (English)
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    1987
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    Für das System ẍ\({}_ i+f_ i(x_ 1,x_ 2,...,x_ n,\dot x_ 1,\dot x_ 2,...,\dot x_ n,t)=0\) mit \(i=1,2,...,n\) kann durch die Substitution \(x_ i=\phi_ i(\xi)=c_{il}\xi +c_{12}\xi^ 2+..\). und Nullsetzen der Koeffizienten des entstehenden Polynoms in \(\xi\), \({\dot \xi}\) und t ein System von algebraischen Gleichungen für die Koeffizienten \(c_{ik}\) abgeleitet werden, dessen reelle Lösungen die Hauptschwingungen des nicht-linearen Systems bestimmen. Einige Spezialfälle, wie lineare, konservative und autonome Systeme, werden kurz behandelt und zwei numerische Beispiele illustrieren den Rechenaufwand.
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    nonlinear vibration
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    numerical methods
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    stability of principal vibrations
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