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Load on Pressure sensor

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Hi,
I am modelling a piezo-resistive pressure sensor. In my model pressure is to be applied ONLY to the top surface of the structure. I am not sure if i have to apply the load as "Pressure" or as "Force per unit area" , under solid mechanics. I don't understand the difference between the two and need some clarification regarding which of the two options should be used.
Thanking you in advance,
Vijay

1 Reply Last Post 4 juil. 2012, 01:45 UTC−4
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)

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Posted: 1 decade ago 4 juil. 2012, 01:45 UTC−4
Hi

Force per unit area can e defined in the different directions, as a vector, a pressure is always normal to the surface and is a scalar. But indeed both are defined as "pressures N/m^2. You have also total force, a scalar distributed EVENLY over the full boundary

--
Good luck
Ivar
Hi Force per unit area can e defined in the different directions, as a vector, a pressure is always normal to the surface and is a scalar. But indeed both are defined as "pressures N/m^2. You have also total force, a scalar distributed EVENLY over the full boundary -- Good luck Ivar

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