Extrusion of polymer melts at a constant deformation rate

1977 ◽  
Vol 13 (2) ◽  
pp. 316-319
Author(s):  
M. S. Akutin ◽  
A. N. Prokunin ◽  
N. G. Proskurnina ◽  
O. Yu. Sabsai
Keyword(s):  
Deformation Rate ◽  
Polymer Melts ◽  
Constant Deformation

Buckling of Viscoelastic Columns. Part II: Constant Deformation Rate Buckling

1985 ◽  
Vol 58 (1) ◽  
pp. 164-175 ◽  
Author(s):  
Shau-Chew Wang ◽  
Eberhard A. Meinecke
Keyword(s):  
Experimental Data ◽  
Secondary Structure ◽  
Carbon Black ◽  
Deformation Rate ◽  
Linear Viscoelasticity ◽  
Theoretical Development ◽  
Gravitational Effects ◽  
Loading And Unloading ◽  
Constant Deformation ◽  
Lower Carbon

Abstract The buckling of viscoelastic columns has been considered from both a theoretical and an experimental perspective. The fact that buckling occurs at relatively low strain where the SBR is nearly linearly viscoelastic allowed several simplifications in the theoretical development, leading to closed form predictions of the loading and unloading curves. This treatment neglects gravitational effects and carbon secondary structure effects and fits the experimental data best at HAF loadings around 30 phr. At lower carbon black loadings, the gravitational effects caused the experimental Euler load to be less than predicted from linear viscoelasticity theory, while at higher carbon black loadings, the carbon black structure led to higher Euler loads than predicted.

Effect of deformation rate on the stress-strain curves of gelatin gels

1996 ◽  
Vol 93 ◽  
pp. 837-849 ◽  
Author(s):  
A Bot ◽  
IA van Amerongen ◽  
RD Groot ◽  
NL Hoekstra ◽  
WGM Agterof
Keyword(s):  
Deformation Rate ◽  
Stress Strain ◽  
Gelatin Gels
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