Periodic structures have properties of controlling mechanical wave. These are used in aircraft, trains, submarines, space structures and demand high level of robustness, which can be ensured with consideration of the presence of uncertainty in the numerical models. The uncertainties, in terms of material properties and geometrical parameters, are mostly introduced in both the manufacturing and assembly process. In order to predict the wave characteristics of the periodic structures under the uncertainty, the stochastic wave finite element method has been extended to periodic structures; wave finite element method (WFEM) added with an additional dimension to model the uncertain parameter using the perturbation approach. Numerical experiments are performed to test the method with one-dimensional periodic rod and periodic beam with parametric uncertainty. The performance of the developed method is compared in terms of computational cost which offers computational advantages over the Monte Carlo Simulation.

A study of structured uncertainties in wave characteristic of one-dimensional periodic structures / Singh, R. P.; Droz, C.; De Rosa, S.; Franco, F.; Bareille, O.; Ichchou, M. N.. - (2018), pp. 4731-4740. (Intervento presentato al convegno 28th International Conference on Noise and Vibration Engineering, ISMA 2018 and 7th International Conference on Uncertainty in Structural Dynamics, USD 2018 tenutosi a bel nel 2018).

A study of structured uncertainties in wave characteristic of one-dimensional periodic structures

Singh R. P.;De Rosa S.;Franco F.;
2018

Abstract

Periodic structures have properties of controlling mechanical wave. These are used in aircraft, trains, submarines, space structures and demand high level of robustness, which can be ensured with consideration of the presence of uncertainty in the numerical models. The uncertainties, in terms of material properties and geometrical parameters, are mostly introduced in both the manufacturing and assembly process. In order to predict the wave characteristics of the periodic structures under the uncertainty, the stochastic wave finite element method has been extended to periodic structures; wave finite element method (WFEM) added with an additional dimension to model the uncertain parameter using the perturbation approach. Numerical experiments are performed to test the method with one-dimensional periodic rod and periodic beam with parametric uncertainty. The performance of the developed method is compared in terms of computational cost which offers computational advantages over the Monte Carlo Simulation.
2018
A study of structured uncertainties in wave characteristic of one-dimensional periodic structures / Singh, R. P.; Droz, C.; De Rosa, S.; Franco, F.; Bareille, O.; Ichchou, M. N.. - (2018), pp. 4731-4740. (Intervento presentato al convegno 28th International Conference on Noise and Vibration Engineering, ISMA 2018 and 7th International Conference on Uncertainty in Structural Dynamics, USD 2018 tenutosi a bel nel 2018).
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/897501
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