The Apparent Stress‐Deformation Behavior of a Dilute Suspension of Spheres in a Power Model Fluid

1977 ◽  
Vol 21 (4) ◽  
pp. 469-491 ◽  
Author(s):  
Victor J. Kremesec ◽  
John C. Slattery
Keyword(s):  
Deformation Behavior ◽  
Power Model ◽  
Apparent Stress ◽  
Stress Deformation ◽  
Model Fluid ◽  
Dilute Suspension

Upper and lower bounds on the drag coefficient of a sphere in a power-model fluid

AIChE Journal ◽  
1964 ◽  
Vol 10 (3) ◽  
pp. 383-388 ◽  
Author(s):  
Melvin L. Wasserman ◽  
John C. Slattery
Keyword(s):  
Drag Coefficient ◽  
Lower Bounds ◽  
Upper And Lower Bounds ◽  
Power Model ◽  
Model Fluid

scholarly journals On the Capability of Logarithmic-Power Model for Prediction of Hot Deformation Behavior of Alloy 800H at High Strain Rates

2019 ◽  
Vol 38 (2019) ◽  
pp. 84-91 ◽  
Author(s):  
E. Shafiei ◽  
A. Soltani Tehrani
Keyword(s):  
Flow Stress ◽  
Constitutive Equation ◽  
Hot Deformation ◽  
Deformation Behavior ◽  
High Strain ◽  
Power Model ◽  
Strain Rates ◽  
Hot Deformation Behavior ◽  
High Strain Rates ◽  
Alloy 800H

AbstractIn this study, the logarithmic-power model has been used to predict hot deformation behavior of alloy 800H at high temperatures. This is for the first time that the logarithmic-power model is examined to model the flow stress curves with negligible flow softening at high strain rates. To this end, flow stress curves of alloy 800H obtained at deformation temperatures from 850°C to 1050°C and at strain rates of 5 and 10 S−1 were employed. The Johnson–Cook model and Shafiei constitutive equation were also used to prove the accuracy of the logarithmic-power model in prediction of flow stress curves of alloy 800H. Evaluation of mean error of flow stress at different deformation conditions showed that the logarithmic-power model can give a more precise estimation of flow stress curves than Johnson–Cook model. Furthermore, it was found out that the accuracy of the Logarithmic-power model and Shafiei constitutive equation was roughly the same in terms of maximum errors obtained in prediction of flow stress curves. Accordingly, it can be concluded that the logarithmic-power model can be employed as a comprehensive model for a wide range of deformation conditions.

scholarly journals NUMERICAL ANALYSIS OF THE EFFECT OF EARTH PRESSURE BALANCED SHIELD TUNNELING ON SOIL STRESS-DEFORMATION BEHAVIOR

2014 ◽  
Vol 2 (1) ◽  
pp. 224-238 ◽  
Author(s):  
Alireza AFSHANI ◽  
Hiroshi DOBASHI ◽  
Kazuhito KOMIYA ◽  
Hirokazu AKAGI
Keyword(s):  
Numerical Analysis ◽  
Deformation Behavior ◽  
Earth Pressure ◽  
Shield Tunneling ◽  
Soil Stress ◽  
Stress Deformation

scholarly journals Deformation behavior of wet lignocellulosic fibers

Holzforschung ◽  
2007 ◽  
Vol 61 (3) ◽  
pp. 261-266 ◽  
Author(s):  
Robert M. Lowe ◽  
Derek H. Page ◽  
John F. Waterhouse ◽  
Jeff Hsieh ◽  
Naveen Cheluka ◽  
...  
Keyword(s):  
Deformation Behavior ◽  
Step Height ◽  
Pulp Fibers ◽  
Lignocellulosic Fibers ◽  
Light Interference ◽  
Glass Slides ◽  
Main Effect ◽  
Wet Pressing ◽  
Analysis Computer ◽  
Dilute Suspension

Abstract The deformation behavior of wet lignocellulosic fibers was examined by applying a dilute suspension of dyed pulp fibers to a filter paper and then wet pressing the fibers onto glass slides. The geometry of single fiber crossing was determined using light interference and an image analysis computer program. The effects of pulp type, refining, wet pressing, drying and bleaching on the deformation behavior of pulp fibers were explored. The main effect of refining fibers was to reduce the step height for fiber-fiber crossings for both bleached and unbleached pulps by increasing the tendency of the cell wall to collapse and deform. All the pulps and treatments investigated maintained a relatively constant value for the step height/free span ratio.

Stress-Deformation Behavior of Chalk

2007 ◽  
Vol 7 (6) ◽  
pp. 403-409 ◽  
Author(s):  
M. U. Holloway-Strong ◽  
S. J. Hughes ◽  
E. E. Hellawell
Keyword(s):  
Deformation Behavior ◽  
Stress Deformation
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