Journal of Computational Methods in Engineering

Journal of Computational Methods in Engineering

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

Document Type : Original Article

Authors
Masoud Hamidifard 1
Farzad Shahabian 1
mohammad hosein Ghadiri Rad 2
1 Ferdowsi University of Mashhad
2 Quchan University of Technology
10.47176/jcme.42.2.1007
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.
Keywords
Stochastic Dynamic Analysis
Multilayer Cylindrical Structures
Saturated Porous Materials
Meshless Local Petrov-Galerkin (MLPG) Method
Subjects
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