Do you have an example demonstrating the procedure used to implement the conventional velocity effects feature for SOLID97?
The torque on a spinning conductive disk (see attachment) can be evaluated in two ways: (1) T = r X F (F = disk element centroidal Lorentz force, r = centroidal position vector) (2) T = P_jht/omega (P_jht = thermal power calculated with POWERH.MAC, omega = disk angular velocity (radians /s). In 3D, conventional velocity effects problems must be solved as harmonic response analyses using a semiarbitrarily low frequency. Because these analyses must be harmonic response, PM`s are not allowed (PM usage in harmonic response analyses is supposed to be error trapped, although it`s possible this is not the case). As of v11, the CYCLIC command may not correctly establish periodic BC`s (despite using KEYW,BETA,1), and it appears as though it`s not yet ready for use in harmonic response analyses. Development reports that this feature is slated for release at v12. 

