Stochastic dynamic analysis of a functionally graded thick hollow cylinder with uncertain material properties subjected to shock loading

2010 ◽  
Vol 31 (2) ◽  
pp. 894-901 ◽  
Author(s):  
Farzad Shahabian ◽  
Seyed Mahmoud Hosseini
Keyword(s):  
Dynamic Analysis ◽  
Hollow Cylinder ◽  
Material Properties ◽  
Shock Loading ◽  
Functionally Graded ◽  
Stochastic Dynamic ◽  
Thick Hollow Cylinder ◽  
Stochastic Dynamic Analysis ◽  
Uncertain Material Properties

Elastic wave propagation in 2D-FGM hollow cylinders with curved outer surface under moving shock loading using isogeometric analysis

2020 ◽  
pp. 095440622096076
Author(s):  
Ahmad Yavari ◽  
Mohammad Hossein Abolbashari ◽  
Behrooz Hassani
Keyword(s):  
Wave Propagation ◽  
Elastic Wave ◽  
Hollow Cylinder ◽  
Outer Surface ◽  
Material Properties ◽  
Shock Loading ◽  
Propagation Speed ◽  
Elastic Field ◽  
Functionally Graded ◽  
Elastic Wave Propagation

Analysis of elastic wave propagation in a hollow cylinder with two-dimensional (2D) functionally graded material (FGM) and the curved outer surface under internal moving shock loading is the subject of this study. In the proposed method, there is no restriction on the distribution of material properties, the shape of the outer surface, and the applied shock loading. They are treated with non-uniform rational B-spline (NURBS). The isogeometric approach is developed for solving the problem to ensure precise modeling of the geometry. Also, the Newmark approach is used for full discretization of the isogeometric equations. The distributions of all elastic field quantities are determined for two types of material distributions and shock loadings. The effects of shock loadings, the shape of the outer surface, and the material distribution on the elastic wave are thoroughly examined. Propagation, reflections, and propagation speed inside the hollow cylinder are investigated. It is found that the propagation speeds of elastic waves have a distribution associated with the distribution of the material properties. Also, the shape of the outer surface can affect the amplitude of the elastic wave and the locations of concentration stress. It is concluded that the sonic boom phenomenon occurs in the solids as well as in the air.

Machine learning based stochastic dynamic analysis of functionally graded shells

2020 ◽  
Vol 237 ◽  
pp. 111870 ◽  
Author(s):  
Vaishali ◽  
T. Mukhopadhyay ◽  
P.K. Karsh ◽  
B. Basu ◽  
S. Dey
Keyword(s):  
Machine Learning ◽  
Dynamic Analysis ◽  
Functionally Graded ◽  
Stochastic Dynamic ◽  
Stochastic Dynamic Analysis
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