scholarly journals Analysis of the Foundation Slab Settlement of the “Africa Pavilion” Facility in Wrocław

2015 ◽  
Vol 37 (4) ◽  
pp. 47-55
Author(s):  
Eugeniusz Sawicki ◽  
Tomasz Strzelecki
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Numerical Calculations ◽  
Soil Consolidation ◽  
The Finite Element Method ◽  
Two Phase ◽  
Foundation Slab ◽  
Consolidation Theory ◽  
Phase Medium ◽  
Biot’S Consolidation

Abstract This article presents the results of numerical calculations of soil consolidation underneath the “Africa Pavilion” structure in Wrocław Zoo, Poland. To determine the deformations of the baseplate of the “Africa Pavilion” and deformations of the subsoil, Biot’s consolidation theory for two-phase medium was applied. The calculations were carried out using the professional program FlexPDE v.6, which is based on the Finite Element Method. Numerical calculations performed were used to evaluate the design assumptions allowing for the laying of hydraulic conduits under the slab.

scholarly journals The Influence of Technological Conditions of the Process of Cogging in Flat Dies on the Quality of Two-Phase Titanium Alloys

2016 ◽  
Vol 61 (2) ◽  
pp. 671-676
Author(s):  
Н. Dyja ◽  
А.А. Тukibay ◽  
S.A. Mashekov
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Titanium Alloys ◽  
Quantitative Data ◽  
Strain State ◽  
Industrial Technology ◽  
The Finite Element Method ◽  
Two Phase ◽  
Optimal Values

Abstract To create a rational technology of cogging process and to determinate the optimal values of the angles of tilt and single reduction the stress-strain state (SSS) of the blank during cogging in the flat dies was analyzed. By using the finite element method and program MSC.SuperForge quantitative data are obtained and the basic patterns of distribution of SSS, the temperature during the simulation of tilting in flat dies with different angles of tilting and the amount of reduction were established. Sustainable experimental-industrial technology of forging of two-phase titanium alloys was developed and tested.

scholarly journals ADHESIVES IN STRENGTHENING OF STEEL STRUCTURES

2010 ◽  
Vol 2 (2) ◽  
pp. 45-50 ◽  
Author(s):  
Hartmut Pasternak ◽  
Gabriel Kubieniec ◽  
Marek Piekarczyk
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Detailed Analysis ◽  
Steel Structures ◽  
Numerical Results ◽  
Numerical Calculations ◽  
Knee Joints ◽  
Experimental Investigations ◽  
The Finite Element Method ◽  
Box Girder

This study includes a detailed analysis of using adhesives in reinforcement of steel structures. Two types of structures were experimentally investigated: box girder and knee joints. The numerical calculations were done on the basis of the experimental investigations performed at CUT Cracow (box girder) and BTU Cottbus (knee joints) with the use of numerical programme Abaqus based on the Finite Element Method. The numerical results were compared with the experimental ones.

Elasto-Viscoplastic Constitutive Equations for Clay and Its Application to Consolidation Analysis

1990 ◽  
Vol 112 (2) ◽  
pp. 202-209 ◽  
Author(s):  
T. Adachi ◽  
F. Oka ◽  
M. Mimura
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Constitutive Model ◽  
Mathematical Structure ◽  
Creep Rupture ◽  
Sample Thickness ◽  
The Finite Element Method ◽  
One Dimensional ◽  
Consolidation Analysis ◽  
Biot’S Consolidation

The mathematical structure of Adachi and Oka’s model, a typical overstress type elasto-viscoplastic constitutive model, for normally consolidated clays is discussed. Since it has been recognized that the overstress type models cannot describe the acceleration creep and creep rupture, the Adachi and Oka’s model was modified so that it can explain the creep rupture including acceleration creep of normally consolidated clays. In addition, based on the Adachi and Oka’s constitutive model and Biot’s consolidation theory, one-dimensional consolidation problems were analyzed numerically by the finite element method. Results show that the proposed method can describe the effect of sample thickness and aging on consolidation phenomena.

Stability of eccentric core–annular flow

1995 ◽  
Vol 282 ◽  
pp. 233-245 ◽  
Author(s):  
Adam Huang ◽  
Daniel D. Joseph
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
The Finite Element Method ◽  
Two Phase ◽  
Two Fluids ◽  
The Core ◽  
Steady Solutions ◽  
Fluid Dynamics Equations ◽  
Concentric Flow ◽  
Element Method

Perfect core-annular flows are two-phase flows, for example of oil and water, with the oil in a perfectly round core of constant radius and the water outside. Eccentric core flows can be perfect, but the centre of the core is displaced off the centre of the pipe. The flow is driven by a constant pressure gradient, and is unidirectional. This kind of flow configuration is a steady solution of the governing fluid dynamics equations in the cases when gravity is absent or the densities of the two fluids are matched. The position of the core is indeterminate so that there is a family of these eccentric core flow steady solutions. We study the linear stability of this family of flows using the finite element method to solve a group of PDEs. The large asymmetric eigenvalue problem generated by the finite element method is solved by an iterative Arnoldi's method. We find that there is no linear selection mechanism; eccentric flow is stable when concentric flow is stable. The interface shape of the most unstable mode changes from varicose to sinuous as the eccentricity increases from zero.

scholarly journals Journal of Siberian Federal University. Mathematics & Physics

2021 ◽  
pp. 21-27
Author(s):  
Olga I. Kuzovatova
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Granular Medium ◽  
Computational Algorithm ◽  
Analytic Solution ◽  
Numerical Calculations ◽  
Approximate Analytic Solution ◽  
The Finite Element Method ◽  
Convergent Channel ◽  
University Mathematics

The aim of this work is to find approximate analytic solution of the problem of granular medium motion in a convergent channel, to develop computational algorithm based on the finite element method, and to carry out numerical calculations of the problem

NUMERICAL ANALYSIS OF KINETIC ENERGY PROJECTILE SABOT STRUCTURE INFLUENCING THE ARMOUR PENETRATION DEPTH. PART II – ANALYSIS OF PROJECTILE DEVELOPING OPTIONS

2021 ◽  
Vol 156 (1) ◽  
pp. 7-28
Author(s):  
Tomasz BŁASZCZAK ◽  
Mariusz MAGIER
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Numerical Analysis ◽  
Kinetic Energy ◽  
Penetration Depth ◽  
Numerical Calculations ◽  
Dynamic Loads ◽  
Simulation Environment ◽  
The Finite Element Method ◽  
Terminal Ballistics

Numerical calculations were used to investigate influence of sabot structures of kinetic energy projectiles into the armour penetration depth. Areas of sabot structure for possible optimization and the influence of various sabot materials on the projectile combat efficiency were indicated. The analysis was performed using the finite element method in the Solidworks Simulation environment. It allowed examination of dynamic loads the sabot is subjected to at the time of the shot. Impact of various sabot materials and projectile geometry modifications on the strength of penetrator - sabot connection was investigated. Distributions of dynamical loads for penetrator-sabot connections were simulated and visualised. Calculations on terminal ballistics were performed for some options of the structure. It allowed identification of development trends for this type of ammunition.

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