NLVE: General description¶
Purpose¶
Application to Analyze Start up of Nonlinear flow
Data Files¶
The first line of the file should contain the sample parameters separated by semi-colons (
;
). It may contain any number of parameters which will be read and saved as file-parameter in RepTate.Then the data columns should appear, separated by spaces or tabs.
.shear
extension¶
Text files with .shear
extension should be organised as follows:
.shear
files should provide parameter values forshear rate, \(\dot\gamma\)
temperature, \(T\)
2 columns separated by spaces or tabs containing respectively:
time, \(t\),
shear stress growth function, \(\sigma^+(t)\),
A correct .shear
file looks like:
gdot=0.1;T=160;
2.50E-01 845
7.50E-01 1830
1.25E+00 2490
... ...
.uext
extension¶
Text files with .uext
extension should be organised as follows:
.uext
files should provide parameter values forHencky strain rate, \(\dot\varepsilon\)
temperature, \(T\)
2 columns separated by spaces or tabs containing respectively:
time, \(t\),
tensile stress growth function, \(\sigma_E^+(t)\),
A correct .uext
file looks like:
gdot=0.1;T=160;
2.50E-01 845
7.50E-01 1830
1.25E+00 2490
... ...
Warning
The first line of the .uext
file provides the flow rate as gdot=0.1
, not edot=0.1
Views¶
log(eta(t))¶
- ApplicationNLVE.viewLogeta()[source]¶
Logarithm of the transient shear or extensional viscosity (depending on the experiment) \(\eta(t)\) vs logarithm of time \(t\)

eta(t)¶
- ApplicationNLVE.vieweta()[source]¶
Transient shear or extensional viscosity (depending on the experiment) \(\eta(t)\) vs time \(t\) (both axes in logarithmic scale by default)

log(sigma(gamma))¶
- ApplicationNLVE.viewLogSigmaGamma()[source]¶
Logarithm of the transient shear or extensional stress (depending on the experiment) \(\sigma(t)\) vs logarithm of the strain \(\gamma\)

sigma(gamma)¶
- ApplicationNLVE.viewSigmaGamma()[source]¶
Transient shear or extensional stress (depending on the experiment) \(\sigma(t)\) vs strain \(\gamma\)

log(sigma(t))¶
- ApplicationNLVE.viewLogSigmaTime()[source]¶
Logarithm of the transient shear or extensional stress (depending on the experiment) \(\sigma(t)\) vs logarithm of time \(t\)

sigma(t)¶
- ApplicationNLVE.viewSigmaTime()[source]¶
Transient shear or extensional stress (depending on the experiment) \(\sigma(t)\) vs time \(t\)
