Remarks on orthogonal superposition of small amplitude oscillations on steady shear flow

The paper demonstrates that experimental data (Simmons, 1968) for orthogonal superposition of small amplitude oscillations on steady shear flow, coincide well enough with the theoretical predictions (Leonov et al., 1976) of simple multi-modal version of Leonov model (Leonov, 1976, 1987; Leonov et al., 1976). It was also shown that the recent theoretical calculations (Wong and Isayev, 1989) of the problem, which used the same Leonov model, are wrong.