Torsional vibrations of anisotropic rods

By the method of eigenfunction expansions we solve the dynamic problem of the torsion of an anisotropic rod. As an example we study a prismatic rod with a square cross section. The natural vibration frequencies are computed. Two figures. Bibliography: 3 titles. Translated fromTeoreticheskaya i Prikladnaya Mekhanika, No. 27, 1997, pp. 104–107.