Abstract
Chladni patterns have proven to be a useful tool in both teaching and research. Chladni patterns, obtained when a “free-free” circular steel plate is driven in steady state, are employed to study the normal and combined modes of vibration. The frequencies of the normal modes are compared to the number of nodal diameters and nodal circles. When two normal modes have nearly the same frequency a linear combination can occur. [Acustica 3, 135 (1953)] The resultant nodal patterns for different proportions of the individual normal modes will be discussed.
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