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Parameter value list (elastoplasticity)
Posted 5 mai 2014, 04:56 UTC−4 3 Replies
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Hello everyone,
I'm simulating a tensile test on a steel tube presenting some defaults with external strain-stress data. I want ultimately to have a strain-stress curve plotted by Comsol for the defective geometry I defined. For that, I defined an interpolation function, named delta, with different numerical values refering to the displacement applied on the top surface of the tube. I also defined a parameter named para, and putted on the prescribed displacement 'delta(para)'. I simply followed the steps of the 'Compression of an Elastoplastic Pipe' model given in Comsol file.
Now in Study 1 --> Step 1 : Stationary-->Study extensions-->Continuation, the model proposes to add the parameter para in the 'Continuation parameter' column and the following : " range(0,0.02,1) range(1.005,
0.005, 1.05) 1.1 2" in the 'Parameter value list' column.
I don't understand the three ranges, nor how Comsol understand the syntax used. Could somebody explain this to me (knowing that what I want ultimately is a strain-stress curve) ? Thanks in advance !
Kind regards.
I'm simulating a tensile test on a steel tube presenting some defaults with external strain-stress data. I want ultimately to have a strain-stress curve plotted by Comsol for the defective geometry I defined. For that, I defined an interpolation function, named delta, with different numerical values refering to the displacement applied on the top surface of the tube. I also defined a parameter named para, and putted on the prescribed displacement 'delta(para)'. I simply followed the steps of the 'Compression of an Elastoplastic Pipe' model given in Comsol file.
Now in Study 1 --> Step 1 : Stationary-->Study extensions-->Continuation, the model proposes to add the parameter para in the 'Continuation parameter' column and the following : " range(0,0.02,1) range(1.005,
0.005, 1.05) 1.1 2" in the 'Parameter value list' column.
I don't understand the three ranges, nor how Comsol understand the syntax used. Could somebody explain this to me (knowing that what I want ultimately is a strain-stress curve) ? Thanks in advance !
Kind regards.
3 Replies Last Post 5 mai 2014, 10:49 UTC−4
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Posted:
1 decade ago
My parameter para corresponds to time in a real experiment test. In fact, all my data is taken from an experimentation, and 'para' takes a large range of values from 0 to 518. Is their a condensed way to write them all down ?
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Posted:
1 decade ago
I guess I should have searched a bit more before I post here. There is a little icon named "Range" just below the table of "Continuation" ...
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Posted:
1 decade ago
Well, I return after encountering a problem with computing because of the range I set.
I put for my continuation parameter 'para' the range : range(0,1,518). An error message is displayed saying that the software has "failed to find a solution for the initial parameter". When I don't activate the continuation check box, I have no computing problems errors, but once I activate it, I have this error message.
I put for my continuation parameter 'para' the range : range(0,1,518). An error message is displayed saying that the software has "failed to find a solution for the initial parameter". When I don't activate the continuation check box, I have no computing problems errors, but once I activate it, I have this error message.