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Tag: structural mechanics

Examples of structural modes of a cylindrical shell (numerical calculation)
June 8, 2018July 19, 2022Technical posts on magnetic noise and vibrations

What is a mode shape and a natural frequency?

Definition The dynamic deflection shape of linear structures can be decomposed in a sum of elementary vibration patterns. These vibration patterns are called mode shapes, they are illustrated below with the […]

October 10, 2017August 10, 2022Technical posts on magnetic noise and vibrations

What is damping?

Definition In structural dynamics, damping is a general term to name all physical phenomena dissipating vibrational energy. Viscous damping describes the energy loss arising from specific forces which are proportional […]

September 11, 2017June 29, 2022Technical posts on magnetic noise and vibrations

Mechanical noise in electric machines

Introduction Acoustic noise of electrical machines includes the contribution of electromagnetic, aerodynamic and mechanical sources. This article reviews the sources of mechanical noise in electric machines.   Mechanical noise sources […]

Frequency Response Function
May 17, 2017July 19, 2022Technical posts on magnetic noise and vibrations

What is a FRF (Frequency Response Function)?

Definition A Frequency Response Function (FRF) is a function used to quantify the response of a system to an excitation, normalized by the magnitude of this excitation, in the frequency […]

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