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Unexpected unit of input

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Hi Everyone,

I want to create some variables using log () ; but it gave me the message "unexpected unit of input".

Although the unit of the used variable is meter.

My physics is "Solid mechanics";
My study is "Stationary";

Did anyone know how can I solve this problem?

Thank you in advance,

3 Replies Last Post 18 set 2016, 06:17 GMT-4
Robert Koslover Certified Consultant

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Posted: 8 years ago 17 lug 2016, 18:20 GMT-4
I'm guessing that the problem is that you are trying to take the logarithm of a quantity that has units. The input quantity to a logarithm should be a unit-less number. If you want to take the logarithm of the number of meters, then you could try dividing it by 1.0[m] first, so as to get rid of the units.
I'm guessing that the problem is that you are trying to take the logarithm of a quantity that has units. The input quantity to a logarithm should be a unit-less number. If you want to take the logarithm of the number of meters, then you could try dividing it by 1.0[m] first, so as to get rid of the units.

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Posted: 8 years ago 19 lug 2016, 05:05 GMT-4
Thank you !
Thank you !

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Posted: 8 years ago 18 set 2016, 06:17 GMT-4
Hi
using the version 5.2, in the variable expression i try to use sinh(phi) or cosh(phi) and give them a name , the unit of (phi) is the volt wich is the variable of electrostatic module, but the color is orange and show ''unexpected unit of input'' so i can't use it in boundary condition ad i can't solve my problem
Appreciate much for your help!!
Hi using the version 5.2, in the variable expression i try to use sinh(phi) or cosh(phi) and give them a name , the unit of (phi) is the volt wich is the variable of electrostatic module, but the color is orange and show ''unexpected unit of input'' so i can't use it in boundary condition ad i can't solve my problem Appreciate much for your help!!

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