In the last simulation blog article the benefits of flexible body dynamics simulation were introduced.
The method used to represent a component flexibly requires an FEA solution that captures the vibration characteristics (normal modes) and the connectivity stiffness between the interface points (constraint modes).
These are all linear modes used to represent any state of a component by a linear superposition sum. But what if your component doesn’t behave linearly?
What if it is a rubber bushing with different stiffness in tension, shear and compression? Superposition of linear modes is no longer an accurate representation.
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