In this paper a method for estimating the crack propagation in components subjected to wide band random processes of loading is presented. The analysis has been carried out considering uniaxial stresses and stationary and gaussian processes. The method uses as input one parameter of the power spectral density (PSD) of the stress process, its variance and 2 parameters of the material and eliminate the need of the integration of the equation of Paris in time domain. The method has been developed by carrying out a significant amount of numerical simulations in which about a thousand different PSDs of different shapes and spectral parameters have been considered.
Petrucci, G., Di Gangi, A. (2011). PROPAGAZIONE DELLA FRATTURA IN COMPONENTI SOLLECITATI DA PROCESSI ALEATORI A BANDA LARGA. In Atti del 40° Convegno nazionale AIAS. Palermo.
PROPAGAZIONE DELLA FRATTURA IN COMPONENTI SOLLECITATI DA PROCESSI ALEATORI A BANDA LARGA
PETRUCCI, Giovanni;
2011-01-01
Abstract
In this paper a method for estimating the crack propagation in components subjected to wide band random processes of loading is presented. The analysis has been carried out considering uniaxial stresses and stationary and gaussian processes. The method uses as input one parameter of the power spectral density (PSD) of the stress process, its variance and 2 parameters of the material and eliminate the need of the integration of the equation of Paris in time domain. The method has been developed by carrying out a significant amount of numerical simulations in which about a thousand different PSDs of different shapes and spectral parameters have been considered.
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