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Geometry optimization
Posted Oct 15, 2012, 9:00 p.m. EDT Structural Mechanics Version 4.2a 1 Reply
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Hello everyone, I´m modeling a simple heat transfer - structural problem, wher I have a 2-D rectangle with a hole in the midle. First I apply a Temperature load that produces expansion in the structural analysis. Then I apply a pressure
in the top of the rectangle.
This combination gives me a stress result in my model. What I want to do is to find the optimum thickness in my rectangle (variable in x and y) that make that the stress in any point in the rectangle does not overcome some specific
value. Other restriction in the model is that the thicknes variable can´t pass under a minimum thickness d_min.
I want to know if i cant fin this optimal d variable with the optimization module and how to do it. I´m trying
with global objetive = abs(solid.sy-sigma_max), and in control global variable I have d as the control variable, and
d_min as my initial value.
Thank you for your help.
in the top of the rectangle.
This combination gives me a stress result in my model. What I want to do is to find the optimum thickness in my rectangle (variable in x and y) that make that the stress in any point in the rectangle does not overcome some specific
value. Other restriction in the model is that the thicknes variable can´t pass under a minimum thickness d_min.
I want to know if i cant fin this optimal d variable with the optimization module and how to do it. I´m trying
with global objetive = abs(solid.sy-sigma_max), and in control global variable I have d as the control variable, and
d_min as my initial value.
Thank you for your help.
1 Reply Last Post Oct 18, 2012, 11:08 a.m. EDT
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Posted:
1 decade ago
Hi
I believe that is what COMSOL and the optimisation module is here for ;)
Take a look at the model library examples.
In fact you should be able to do a simple 1 variable optimisation even without the "optimisation" module, but if you have it, you will gain time and have less equations to write out
--
Good luck
Ivar
I believe that is what COMSOL and the optimisation module is here for ;)
Take a look at the model library examples.
In fact you should be able to do a simple 1 variable optimisation even without the "optimisation" module, but if you have it, you will gain time and have less equations to write out
--
Good luck
Ivar