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how to measure surface area of rudged boundaries
Posted Feb 16, 2011, 6:03 p.m. EST Version 4.0a, Version 4.1 1 Reply
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Hi all,
I have 3D object, and one of its faces is irregularly shaped and extruding out in space. I need to measure the area of the face. So i did Measure--> select boundaries, but I can't click anything in the graphics. What should I do?
Thanks!
Tina
I have 3D object, and one of its faces is irregularly shaped and extruding out in space. I need to measure the area of the face. So i did Measure--> select boundaries, but I can't click anything in the graphics. What should I do?
Thanks!
Tina
1 Reply Last Post Feb 17, 2011, 1:15 a.m. EST
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Posted:
1 decade ago
Hi
Comsol does no have extended geometrical metrology features on the geometry as such, you can get coordinates of points, lengt between two points or along a line.
If you have complex shapes, mesh them (anyhow that are the surfaces volumes or lengths that are used for the FEM) and integrate the operand "1" over the area. In structural up to you to define the frame: material (original undeformed) or spatial (by default) the deformed shapes.
This can be done after the FEM solution is found, or o the initial values, for that: set up your model and get a default solver (right click Solver Configuration node + Show default solver) and then hit the Dependent variables sub node and right-click + Compute to selected. This will initialize your matrices and set up the initial conditions (a good way to know where you are starting, ideally should look close to the expected solution for optimum convergence)
--
Good luck
Ivar
Comsol does no have extended geometrical metrology features on the geometry as such, you can get coordinates of points, lengt between two points or along a line.
If you have complex shapes, mesh them (anyhow that are the surfaces volumes or lengths that are used for the FEM) and integrate the operand "1" over the area. In structural up to you to define the frame: material (original undeformed) or spatial (by default) the deformed shapes.
This can be done after the FEM solution is found, or o the initial values, for that: set up your model and get a default solver (right click Solver Configuration node + Show default solver) and then hit the Dependent variables sub node and right-click + Compute to selected. This will initialize your matrices and set up the initial conditions (a good way to know where you are starting, ideally should look close to the expected solution for optimum convergence)
--
Good luck
Ivar