Exact solutions for the longitudinal vibration of non-uniform rods [J. Sound Vib. 207 (1997) 721-729]

Referred to by R.I. Sujith; Exact solutions for the longitudinal vibration of non-uniform rods: Author's reply Journal of Sound and Vibration, Volume 329, Issue 19, 13 September 2010, Page 4108The aims of this communication are to correct the frequency equation for a free–free rod with area variation A(x)=A0 s in2(ax+b) in a published article [1] and present the corrected non-dimensional natural frequencies