Plastic-Fracture Stress Transfer Model for Concrete Discontinuities

10.14359/4079 ◽  
1994 ◽  
Vol 91 (5) ◽  
Keyword(s):  
Fracture Stress ◽  
Stress Transfer ◽  
Transfer Model

scholarly journals Modeling the processes of aerogasdynamics of structural elements of a supersonic aircraft

2019 ◽  
Author(s):  
E.S. Studennikov
Keyword(s):  
Stress Transfer ◽  
Aerodynamic Characteristics ◽  
Wind Tunnels ◽  
Transfer Model ◽  
Structural Elements ◽  
Base Region ◽  
Supersonic Aircraft ◽  
Wide Range ◽  
Sharp Cone ◽  
Semi Empirical

The purpose of the research was to study the aerodynamic features of the flow around the simplest structural elements of an aircraft, such as sharp and blunt-nose cones. For calculations we applied the perfect gas model. To describe flows with large adverse pressure gradients, we used the Menter's shear stress transfer model. We analyzed changes in the aerodynamic characteristics of the cones in a wide range of angles of attack α and flow Mach M∞ numbers. Furthermore, we investigated the parameters of the base region of the sharp cone at transonic and supersonic speeds, and compared the simulation results with the data of a physical experiment both in wind tunnels and on a ballistic installation. The comparison showed good agreement with the experimental data. Numerical simulation data can be applied to form the external appearance of aircraft for various purposes, to study the influence of the temperature factor on the flow around bodies, and to create semi-empirical models for calculating the parameters of the base region of conical bodies.

Stress Transfer Model for Single Fibre and Platelet Composites

1999 ◽  
Vol 33 (16) ◽  
pp. 1525-1543 ◽  
Author(s):  
D. A. Mendels ◽  
Y. Leterrier ◽  
J. A. E. Manson
Keyword(s):  
Stress Transfer ◽  
Single Fibre ◽  
Transfer Model

A stress-transfer model for the development of extension fracture boudinage

1982 ◽  
Vol 4 (3) ◽  
pp. 355-372 ◽  
Author(s):  
G.E Lloyd ◽  
C.C Ferguson ◽  
K Reading
Keyword(s):  
Stress Transfer ◽  
Transfer Model ◽  
Extension Fracture

scholarly journals Theory of Heat Exchange in Pipes With Turbulators With d/D = 0.95 ÷ 0.90 And t/D = 0.25 ÷ 1.00, and Also in Rough Pipes, by Air With Great Reynold’s Numbers Re = 106

2020 ◽  
Vol 2 (4) ◽  
Author(s):  
Lobanov Igor Evgenjevich
Keyword(s):  
Heat Exchange ◽  
Cross Section ◽  
Energy Equation ◽  
Stress Transfer ◽  
Reynolds Numbers ◽  
Transfer Model ◽  
Computational Studies ◽  
Structured Grids ◽  
Multi Scale ◽  
Semicircular Cross Section

Mathematical modeling of heat exchange in air in pipes with turbulators with d / D = 0.95 ÷ 0.90 and t / D = 0.25 ÷ 1.00, as well as in rough pipes, with large Reynolds numbers (Re = 106). The solution of the heat exchange problem for semicircular cross-section flow turbulizers based on multi-block computing technologies based on the factorized Reynolds equations (closed using the Menter shear stress transfer model) and the energy equation (on multi-scale intersecting structured grids) was considered. This method was previously successfully applied and verified by experiment in [1-4] for lower Reynolds numbers. The article continues the computational studies initiated in [1-4,25-27].

New Grain Interaction Models for Deformation Texture Simulations

2007 ◽  
Vol 539-543 ◽  
pp. 3371-3376
Author(s):  
R. Quey ◽  
S. Ringeval ◽  
David Piot ◽  
Julian H. Driver
Keyword(s):  
Stress Transfer ◽  
Deformation Texture ◽  
Texture Development ◽  
Transfer Model ◽  
Local Orientation ◽  
Boundary Area ◽  
Texture Modeling ◽  
Taylor Models ◽  
Grain Interaction ◽  
Hot Rolled

Two relatively simple schemes are described for the interactions of grain deformations during large plastic deformations with the aim of evaluating their influence on texture development. The stress transfer model basically assumes that there is some degree of stress transfer across the boundaries proportional to the boundary area. The reduced stress incompatibility model minimizes the stress incompatibilities between each grain and their surrounding grains These models assume 3D topological schemes using evolving truncated octahedra for the spatial distributions of the grains. They are applied to the cases of hot rolled and cross forged Al alloys. Both give quite similar predictions for texture development which are moderate improvements on the Taylor models, confirming that the incorporation of grain interaction effects can be useful for texture modeling without major modifications. Moreover, they can yield interesting results for local orientation effects and their influence on orientation stability; an example of cube grains hot rolled in different crystallographic surroundings is also treated.

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