scholarly journals Ultrasonic beam propagation through a bimetallic weld?A comparison of predictions of the Gauss-Hermite beam model and finite element method

1993 ◽  
Vol 12 (2) ◽  
pp. 151-158 ◽  
Author(s):  
A. Minachi ◽  
J. Mould ◽  
R. B. Thompson
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Beam Propagation ◽  
Beam Model ◽  
Ultrasonic Beam ◽  
Element Method

scholarly journals Design finite element method based models of floating dry docks strength

2021 ◽  
pp. 43-52
Author(s):  
Anatoly Mironov ◽  
Dmitry Y. Titko
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Three Dimensional ◽  
Element Model ◽  
Elastic Base ◽  
Beam Model ◽  
Buoyant Force ◽  
Dry Dock ◽  
Global Strength ◽  
Element Method

The features of global strength modelling of floating dry docks using finite element method are considered. Comparative analysis of two- and three-dimensional models was performed considering the interaction of the floating dry dock and the ship. To solve the problem of reducing the complexity of creating and the size of the finite element model, it is proposed to use the elements of a volumetric orthotropic body to model the main transverse beams of the pontoon. Hydrostatic elastic base of floating dry dock is represented as spring elements. The model of the dock support device includes spring and gap elements. The vessel is considered in the equivalent beam model. Results were obtained on such effects as redistribution of buoyant force due to deformation of the dock, incomplete inclusion of the towers in the general longitudinal bending of the dock, the effect of ship stiffness not only on the longitudinal, but also on the transverse bending of the dock.

Dynamic Viscoelastic Beam Model for Finite Element Method

1990 ◽  
Vol 3 (1) ◽  
pp. 19-29 ◽  
Author(s):  
Joseph J. Rencis ◽  
Sunil Saigal ◽  
Kwo‐Yih Jong
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Beam Model ◽  
Viscoelastic Beam ◽  
Element Method

scholarly journals Exploring three-dimensional edge-based smoothed finite element method based on polyhedral mesh to study elastic mechanics problems

2021 ◽  
Vol 39 (4) ◽  
pp. 747-752
Author(s):  
Jian Yang ◽  
Wei Xie ◽  
Zhiwei Zhang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Relative Error ◽  
Three Dimensional ◽  
Beam Model ◽  
Hexahedral Elements ◽  
Smoothed Finite Element Method ◽  
Polyhedral Mesh ◽  
Edge Based ◽  
Element Method

This paper established the three-dimensional edge-based smoothed finite element method(ES-FEM) based on polyhedral mesh, divided the smoothed domain, constructed the shape function and derived the geometric matrix and the stiffness matrix. The MATLAB software was used to prepare the corresponding computing programs, with which the paper studied the stress distribution of a hollow sphere model and a beam model under different numbers of polyhedral elements. The paper compared the calculation results from the conventional finite element methods(FEM) that use tetrahedral elements and hexahedral elements respectively in terms of stress relative error and energy relative error. The comparison results show that the three-dimensional ES-FEM based on polyhedral mesh has better precision and convergence than the conventional FEM and better adaptability to complex geometric structures.

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