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help required!!
Posted Jan 17, 2011, 7:27 a.m. EST Version 4.1 1 Reply
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can any one help me in reproducing the result of the attached paper, more specifically local buckling , as i am totally lost which physics to use? and many more things?
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1 Reply Last Post Jan 17, 2011, 7:56 a.m. EST
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Posted:
1 decade ago
Hi
if you are a newbeginner with COMSOL, starting with such an example is rather tough, but having it as a goal is always a good thing, I'm sure you will manage but do expect to use some days or weeks first to learn COMSOL, otherwise you have no idea if your results are correct or not.
I believe you need structural and thermal physics, the structural toolbox should be a minimum, structural and thermal would be handy, as then most physics are ready "pre-cooked" in COMSOL.
By default material is free, unstressed, so you need to first define how you stress it (in your case thermally), how its fixed and do a stationary solver first (use v4.1 its easier, othervise I'm afraid you must also link in matlab, and the COMSOL matlab interface is far more to learn) then you might run a buckling analysis which is a transformed eigenfrequency analsis, and you then need to link in a parametric sweep to cover the different cases.
Start with simple examples first, one physics at the time, and then only couple them. Start alo in 2D its easier to learn and quicker to solve, thenyou can run 3D model when you are more familiar with the GUIs
--
Good luck
Ivar
if you are a newbeginner with COMSOL, starting with such an example is rather tough, but having it as a goal is always a good thing, I'm sure you will manage but do expect to use some days or weeks first to learn COMSOL, otherwise you have no idea if your results are correct or not.
I believe you need structural and thermal physics, the structural toolbox should be a minimum, structural and thermal would be handy, as then most physics are ready "pre-cooked" in COMSOL.
By default material is free, unstressed, so you need to first define how you stress it (in your case thermally), how its fixed and do a stationary solver first (use v4.1 its easier, othervise I'm afraid you must also link in matlab, and the COMSOL matlab interface is far more to learn) then you might run a buckling analysis which is a transformed eigenfrequency analsis, and you then need to link in a parametric sweep to cover the different cases.
Start with simple examples first, one physics at the time, and then only couple them. Start alo in 2D its easier to learn and quicker to solve, thenyou can run 3D model when you are more familiar with the GUIs
--
Good luck
Ivar