... that the dynamics of a damped potential system in which the damping matrix may be arbitrary is identical to that of a damped gyroscopic potential system with a symmetric damping matrix. This brings, for the first time, these two systems, which are seen today as belonging to different categories of dynamical systems...

... of A pplied M echanics . 20 10 2022 15 11 2022 15 11 2022 19 12 2022 structural and mechanical systems general holonomic and/or nonholonomic constraints singular mass matrices explicit equations of constrained motion physical interpretation dynamical systems...