Analysis of Nonstationary Random Vibrations

by Karl Popp, Univ of Hannover, Germany,

Document Type: Proceeding Paper

Part of: Structural Safety and Reliability

Abstract: Nonstationary random vibrations occur in structural mechanics as well as in vehicle dynamics. Very often the nonstationary excitation process can be modelled as stationary white or colored noise modulated by a deterministic time function. In this case a completely algebraic method is available for the computation of the time-varying covariance matrix. The method is suitable also for high-order systems. Examples demonstrate the efficiency of the method for the investigation of structures under earthquake excitation.

Subject Headings: Vibration | Vehicles | Excitation (physics) | Structural mechanics | Structural dynamics | Stationary processes | Structural analysis | Computing in civil engineering

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