Multiple Frequencies in Dynamic Systems

by Alexander Chajes, (M.ASCE),
Bruce Johnson,

Serial Information: Journal of the Structural Division, 1978, Vol. 104, Issue 1, Pg. 200-204

Document Type: Journal Paper

Abstract: Ordinarily a structural system with n degrees-of-freedom can be expected to have n different and distinct natural frequencies. However, under certain conditions two or even more of the frequencies have the same value. It is the purpose of this paper to consider a three-degree-of-freedom system with three identical natural frequencies and to arrive at certain conclusions regarding the characteristics of the system.

Subject Headings: Structural systems | Natural frequency | Professional societies | Degrees of freedom |

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