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Units of E and Neumann and Drichlet #179

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antonagafonov opened this issue Feb 9, 2023 · 3 comments
Open

Units of E and Neumann and Drichlet #179

antonagafonov opened this issue Feb 9, 2023 · 3 comments
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enhancement New feature or request

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@antonagafonov
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Hi,
Just to make sure.
Are units for E Pascals, for Force Newton, and for displacement meters?
Thanks

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@antonagafonov antonagafonov added the enhancement New feature or request label Feb 9, 2023
@teseoch
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teseoch commented Feb 9, 2023

The code is unitless; you only need to be careful that everything is consistent. So if E is in Pa, then density should be in kg/m3 and disp m.

@antonagafonov
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thanks

@antonagafonov antonagafonov reopened this Sep 27, 2023
@antonagafonov
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antonagafonov commented Sep 27, 2023 •
edited

Hi,
Still cannot figure out what is wrong with my units.
Can you explain how the Lame parameters are calculated in PolyFEM simulator from $E$ and $\nu$ ?

In my model it is expected to use $E$ in KPa to get appropriate deformations with small forces, but to get this I need to set $E$ = 0.01 Pa.

Something here is not right....

Thanks

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@teseoch @antonagafonov