Hi,
i'm currently using the version 4.2a. i'm trying to model a capacitive pressure sensor. i downloaded a capactive pressure sensor from comsol website (for version 4.3) and it is working fine. in that model air is being used as a material for the reference cavity. i created my own model and when i use air as the material for the reference cavity, i have been asked to enter the young's modulus and poission ratio of the air. what is the reason behind it? can anyone please explain?
i'm currently using the version 4.2a. i'm trying to model a capacitive pressure sensor. i downloaded a capactive pressure sensor from comsol website (for version 4.3) and it is working fine. in that model air is being used as a material for the reference cavity. i created my own model and when i use air as the material for the reference cavity, i have been asked to enter the young's modulus and poission ratio of the air. what is the reason behind it? can anyone please explain?