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How to define resistance of my component (internal resistance) and DAQ resistance (external resistance)
Posted 8 lug 2019, 15:19 GMT-4 1 Reply
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Dear COMSOL support team, I have a question regarding defining resistance in my model. I have a 3D component with internal resistance of R1 and an external DAQ with resistance of R2. I am referring to electric circuit physics in COMSOL. I defined Resistance but there is another resistance inside setting of electrical circuit physics. Can you please let me know what does each of them mean? If my component itself has resistance do I have to define its resistance seperately or COMSOL is considering its resistance as materials are defined? Attached you can see screenshot of each resistance I am confused what is the difference between them.
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When you connect up a circuit to a 2D or 3D (as an example) simulation, you have internal resistance due to the model itself and then external components via spice syntax. Internal resistance is from boundary conditions and materials present in the model physics. The spice modeling are separate features that you add if you want to simulate some aspect that cannot be done in one of the physic settings. spice modeling in comsol is adding a circuit to drive FEA simulations.