Key points are not available for this paper at this time.
Abstract Steady-state vibrations of mechanical systems damped by a combination of dry and viscous friction occur quite frequently, but until very recently no method for their calculation existed. A very satisfactory approximation was presented by L. S. Jacobsen before the A.S.M.E. in June, 1930. In the present paper the author gives the exact solution of the problem, together with a number of test results.
J. P. Den Hartog (Thu,) studied this question.