Understanding Thin Layer Interfaces in COMSOL Simulation
Explore the concept of thin layer interfaces in COMSOL simulation, including different approximations such as solid, membrane, and spring. Learn how these approximations affect displacement and stress fields, and when to use each for optimal results in your simulations.
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Presentation Transcript
Thin Layer Interfaces COMSOL
Background and Motivation A layers is considered thin when its thickness is small compared to other dimensions of the structures Difficult to produce a solid mesh of acceptable quality Thin Layer feature can be used to avoid meshing Alternative approximations are available: solid, membrane and spring Continuity of the displacement and stress fields depends on the layer approximation and material properties
Solid approximation Continuity of displacement is not enforced Continuity of stress is not enforced Solid approximation
Membrane approximation Continuity of displacement is enforced Continuity of stress is not enforced Converges to a perfect interface for low values of the interface shear modulus. Transition from membrane approximation to perfect interface
Spring approximation Continuity of displacement is not enforced Converges to a perfect interface for high values of spring stiffness Transition from spring approximation to perfect interface
