2009•Journal of Machine DesignRequires access

Estimation on vibration fatigue life-span under random loading based on PSD

LU Bo-you

Abstract

Directed against the situation of difficult to estimate the vibration fatigue life-span under complex random loading in engineering practice,the estimation of fatigue life-span on the viabrational component parts under random loading has been carried out based on Power Spectrum Density(PSD) function.Two kinds of situations were discussed respectively on the narrowband random loading and the broadband random loading.The method is simple and possesses very strong engineering practicality.

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Key concepts: Vibration fatigue, Random vibration, Structural engineering, Spectral density, Span (engineering), Vibration, Narrowband, Engineering