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Time Derivative Constraint
Posted 9 mag 2013, 10:10 GMT-4 Structural Mechanics Version 4.2a 0 Replies
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I'm modelling a Gleeble test: a bar is being heated by Joule Effect.
Now I've tried to model a feedback loop control, I need to control the Heating Rate, the variation of temperature, to be 100 °/s, this means to control the Tt variable.
The first trouble was that It is not possible to specify time derivative constraint, but in fact my constraint, the eletric potential on the first boundary, was a time derivative constraint.
So I discovered that It was necessary to thick the weak formulation box and specify unidirectional derivative. In fact I do not know what I did. But now, I'm experiencing a frustrating "non consistent initial values". Could I upload the file and have suggestion?
Hello Michele Antonio Iannuzzi
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