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object shape changing due to high aspect ratio
Posted 19 mai 2015, 14:02 UTC−4 Geometry, Structural Mechanics 2 Replies
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Hello everybody, I am a bit new on COMSOL platform. I have been trying to model rod which is 50.4 mm in length and 10 um in diameter. I have been using structural mechanics module for that as I need to do some frequency analysis. But the problem is that the shape automatically changed to a rectangular bar if i input my length that long. So far I am getting a circular cross sectioned rod upto 1mm, beyond that value the shape get changed.
Any solution is appreciated.
Thank you
Any solution is appreciated.
Thank you
2 Replies Last Post 19 mai 2015, 18:32 UTC−4
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Posted:
9 years ago
Can you simulate, for example, 500µm to 1 mm and apply scaling rules to extend the solution to longer lengths?
That long object seems a nasty tessellation problem.
It might alternately be possible to model it directly as an extruded polygon rather than a cylinder and force the tessellation you want.
That long object seems a nasty tessellation problem.
It might alternately be possible to model it directly as an extruded polygon rather than a cylinder and force the tessellation you want.
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Posted:
9 years ago
This is just a visualization effect. You can change that in Preferences > Graphics and Plot Windows. Set 'Detail' to 'Fine'.
Cheers
Edgar
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Edgar J. Kaiser
emPhys Physical Technology
www.emphys.com