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Units in Finite Element Computations in COMSOL

Posted 2020年11月20日 GMT-5 16:56 2 Replies

Frank Zhang
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Hi I would like to ask when I set the geometric dimensions as millimeters, what do I need to set for the unit of Young's modulus? still Pa? or others? Best wishes J

2 Replies Last Post 2020年11月23日 GMT-5 09:56
Dave Greve
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Posted: 4 years ago 2020年11月20日 GMT-5 20:00

As long as you write the material constants with units, Comsol will take care of the conversion.

As long as you write the material constants with units, Comsol will take care of the conversion.
Henrik Sönnerlind COMSOL Employee

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Posted: 4 years ago 2020年11月23日 GMT-5 09:56

If you just write numbers, without explicit units, they are assumed to have the unit that is shown to the right of the text field. These default units are affected by the unit system selection that can be made both at the top level (root) node and for each Component node. Thus, different components can even have different unit systems.

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Henrik Sönnerlind
COMSOL
If you just write numbers, without explicit units, they are assumed to have the unit that is shown to the right of the text field. These default units are affected by the unit system selection that can be made both at the top level (root) node and for each Component node. Thus, different components can even have different unit systems.

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