Stochastic Dynamic Analysis of Multilayer Saturated Porous Cylindrical Structures Using the Meshless Local Petrov-Galerkin Method

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Hamidifard M.; Shahabian F.; Ghadiri Rad M.H.

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Journal Paper

Paper Information

Journal: JOURNAL OF COMPUTATIONAL METHODS IN ENGINEERING (ESTEGHLAL) Year:2023 | Volume:42 | Issue:2 Page(s): 87-108

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Information Journal Paper

Title

Stochastic Dynamic Analysis of Multilayer Saturated Porous Cylindrical Structures Using the Meshless Local Petrov-Galerkin Method

Author(s)

Hamidifard M. | Shahabian F. | Ghadiri Rad M.H. | Issue Writer Certificate

Keywords

Stochastic Dynamic Analysis

Multilayer Cylindrical Structures

Saturated Porous Materials

Meshless Local Petrov-Galerkin (MLPG) Method

Abstract

The stochastic meshless local Petrov–Galerkin method is employed for dynamic analysis of multilayer cylinders made of fully Saturated Porous Materials considering uncertainties in the constitutive mechanical properties. The multilayer porous cylinder is assumed to be under shock loading. To approximate the trial functions in the radial point interpolation method (RPIM), the radial basis functions (RBFs) are utilized. The Monte Carlo simulation is used to generate the random ﬁelds for mechanical properties. The results are obtained for various random variables, which are simulated by uniform, normal and lognormal probability density functions with various coefﬁcients of variation (COV), changing from 0 to 20%. The obtained results from the presented stochastic analysis are compared to those obtained from the analysis considering deterministic mechanical properties. The results show that the uncertainty in mechanical properties has a signiﬁcant effect on the structural responses, especially for big values of COVs.

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