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Moddeling change in resistance/conductance due to thermal expansion

Dear Comsol users, Due to temperature a material expands and when it does the electrical resistance of this material also changes. I want to model this in comsol. I added the thermal expansion first,...

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Re: Moddeling change in resistance/conductance due to thermal expansion

Hi Rutger, As far as I know, resistance changes caused by deformation are usually due to geometry changes rather than material properties changes. For exampe a strain gauge that is stretched becomes...

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Re: Moddeling change in resistance/conductance due to thermal expansion

Dear Pieter, You are correct. I formulated my sentence incorrectly. Due to the expansion of the material the resistance of the geometry will increase. However, how do I model this in Comsol?

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Re: Moddeling change in resistance/conductance due to thermal expansion

Sorry, I don't know.

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Re: Moddeling change in resistance/conductance due to thermal expansion

Hi Rutger, You do not need to add an ALE interface. You just have to switch on 'Include geometric nonlinearity' for the study step. Then the Electric Currents will see the deformed frame. Regards, Henrik

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Re: Moddeling change in resistance/conductance due to thermal expansion

Dear Henrik, Thank you for the advice, it seems to work! Rutger

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Moddeling change in resistance/conductance due to thermal expansion

Dear Comsol users, Due to temperature a material expands and when it does the electrical resistance of this material also changes. I want to model this in comsol. I added the thermal expansion first,...

View Article

Re: Moddeling change in resistance/conductance due to thermal expansion

Hi Rutger, As far as I know, resistance changes caused by deformation are usually due to geometry changes rather than material properties changes. For exampe a strain gauge that is stretched becomes...

View Article


Re: Moddeling change in resistance/conductance due to thermal expansion

Dear Pieter, You are correct. I formulated my sentence incorrectly. Due to the expansion of the material the resistance of the geometry will increase. However, how do I model this in Comsol?

View Article


Re: Moddeling change in resistance/conductance due to thermal expansion

Sorry, I don't know.

View Article

Re: Moddeling change in resistance/conductance due to thermal expansion

Hi Rutger, You do not need to add an ALE interface. You just have to switch on 'Include geometric nonlinearity' for the study step. Then the Electric Currents will see the deformed frame. Regards, Henrik

View Article

Re: Moddeling change in resistance/conductance due to thermal expansion

Dear Henrik, Thank you for the advice, it seems to work! Rutger

View Article

Moddeling change in resistance/conductance due to thermal expansion

Dear Comsol users, Due to temperature a material expands and when it does the electrical resistance of this material also changes. I want to model this in comsol. I added the thermal expansion first,...

View Article


Re: Moddeling change in resistance/conductance due to thermal expansion

Hi Rutger, As far as I know, resistance changes caused by deformation are usually due to geometry changes rather than material properties changes. For exampe a strain gauge that is stretched becomes...

View Article

Re: Moddeling change in resistance/conductance due to thermal expansion

Dear Pieter, You are correct. I formulated my sentence incorrectly. Due to the expansion of the material the resistance of the geometry will increase. However, how do I model this in Comsol?

View Article


Re: Moddeling change in resistance/conductance due to thermal expansion

Sorry, I don't know.

View Article

Re: Moddeling change in resistance/conductance due to thermal expansion

Hi Rutger, You do not need to add an ALE interface. You just have to switch on 'Include geometric nonlinearity' for the study step. Then the Electric Currents will see the deformed frame. Regards, Henrik

View Article


Re: Moddeling change in resistance/conductance due to thermal expansion

Dear Henrik, Thank you for the advice, it seems to work! Rutger

View Article

Moddeling change in resistance/conductance due to thermal expansion

Dear Comsol users, Due to temperature a material expands and when it does the electrical resistance of this material also changes. I want to model this in comsol. I added the thermal expansion first,...

View Article

Re: Moddeling change in resistance/conductance due to thermal expansion

Hi Rutger, As far as I know, resistance changes caused by deformation are usually due to geometry changes rather than material properties changes. For exampe a strain gauge that is stretched becomes...

View Article
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