After a summary of the multifield approach to the analysis of elastic microcracked solid bodies, the introduction of stochastic uncertainties in the properties and distribution of the microcracks is discussed. Numerical examples are presented: the strain localization phenomena that have already been found in deterministic bodies are confirmed, and similar patterns are shown to exist also for the stochastic moments of the displacements. In particular, the localization of skewness and kurtosis becomes stronger as the mesoscale characteristic length is more correlated. Since strain localization may initiate macrofractures, these results appear of great interest in view of further developments concerning the reliability of mechanical and structural components.
Elastic microcracked bodies with random properties: Numerical investigations / Massimiliano Gioffrè; Furio Lorenzo Stazi; Paolo Maria Mariano; Giuliano Augusti. - STAMPA. - (2003), pp. 215-224. (Intervento presentato al convegno 4th International Conference on Computational Stochastic Mechanics tenutosi a Corfù nel 9-12/06/2002).
Elastic microcracked bodies with random properties: Numerical investigations
Paolo Maria Mariano;
2003
Abstract
After a summary of the multifield approach to the analysis of elastic microcracked solid bodies, the introduction of stochastic uncertainties in the properties and distribution of the microcracks is discussed. Numerical examples are presented: the strain localization phenomena that have already been found in deterministic bodies are confirmed, and similar patterns are shown to exist also for the stochastic moments of the displacements. In particular, the localization of skewness and kurtosis becomes stronger as the mesoscale characteristic length is more correlated. Since strain localization may initiate macrofractures, these results appear of great interest in view of further developments concerning the reliability of mechanical and structural components.I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.