https://doi.org/10.1351/goldbook.12767
Deformation of a material by the application of a small sinusoidal strain (\(\gamma\)) such that \[\gamma = \gamma_{0} \cos \omega t\] where \(\gamma_{0}\) and \(\omega\) are positive constants.
Notes:
- \(\gamma\) may be in simple shear or uniaxial deformation.
- \(\gamma_{0}\) is the strain amplitude.
- \(\omega\) is the angular velocity of the circular motion equivalent to a sinusoidal frequency \(v\) with \(\omega = 2\uppi \nu\). The unit of \(\omega\) is \(\pu{rad s-1}\).
- For linear viscoelastic behaviour, a sinusoidal stress (\(\sigma\)) results from the sinusoidal strain with \(\sigma = \sigma_{0} \cos (\omega t + \delta) = \sigma_{0} \cos \delta \cos \omega t - \sigma_{0} \sin \delta \sin \omega t\).
See: free oscillation