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Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

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Ring of varying width

Posted 24.07.2013, 16:28 GMT-4 Geometry Version 4.3b 2 Replies

Sean Chiu
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Hello,

I'm trying to build a ring that has a nominal radius but whose width (thickness) varies as a function of the angle phi around the ring. I've created a cylindrical coordinate system but can't figure out how to use it. Any suggestions?

Thanks,
Sean

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2 Replies Last Post 24.07.2013, 17:46 GMT-4
Sri Puranam
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Posted: 1 decade ago 24.07.2013, 17:03 GMT-4
Sean,

You will not be able to use the cylinder to build what you like. I have tried this before and failed. I had to draw the two ends of the cylinder separately and then use "cap faces" to get the varying width cylinder. Check out my attachment.

Sri.
Sean, You will not be able to use the cylinder to build what you like. I have tried this before and failed. I had to draw the two ends of the cylinder separately and then use "cap faces" to get the varying width cylinder. Check out my attachment. Sri.
Josh Thomas Certified Consultant
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Posted: 1 decade ago 24.07.2013, 17:46 GMT-4
Sean and Sri,

You can use a cylinder and then just do a partition Boolean command to chop off the unwanted geometry.

See attached mph file Geometry 1 is Sri's geometry. Geometry 2 is the way to do the same thing with a cylinder.

Best regards,
Josh Thomas
Sean and Sri, You can use a cylinder and then just do a partition Boolean command to chop off the unwanted geometry. See attached mph file Geometry 1 is Sri's geometry. Geometry 2 is the way to do the same thing with a cylinder. Best regards, Josh Thomas

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