A helical spring—notations.
Dispersion diagram for a helical spring with ɛ = 0.184, ψ = 0.13. (a) Real parts of wave numbers and (b) imaginary parts of wave numbers. Rhomb symbols: Complex-valued wave numbers. Dots: Purely imaginary wave numbers.
Power flow in a helical spring with ɛ = 0.184, ψ = 0.13. (a) In-plane loading by a unit force Q x and (b) Out-of-plane loading by a unit force. Q y . Ω = 0.0022 (continuous curves); Ω = 0.022 (dashed curves); the sum of the in-plane components (thin curves); and the sum of the out-of-plane components (bold curves).
The dynamic transfer stiffness.
Eigenfrequencies (Hz) and relative discrepancies
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