Mechanical math

Incture 5

Cove{fleg fof Lpctur,e 5

1. Unit 6 * Normal modes. o Modelling free undamped vibrations with

two degrees of freedom o Finding equilibrium positions . Setting up two equations of motion

2. Normal mode natural frequencies (eigenvalues).

3. Normal mode displacement ratios (eigenvectors). r in-phase and phase opposed motion r the general displacement equations and

initial conditions

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