robryk (nprofile…u6vt) nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpqtwpqyrg7jzuy6x4s2rcyz4g8xqv5klazjmcqatu63y5qpctkh54sarhmdu (nprofile…hmdu) nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpqknzsux7p6lzwzdedp3m8c3c92z0swzc0xyy5glvse58txj5e9ztqt54hp5 (nprofile…4hp5)
There is the Rayleigh dissipation function:
https://en.wikipedia.org/wiki/Rayleigh_dissipation_function
But when you switch from Lagrangian to Hamiltonian view point with dissipation, you get a Hamiltonian that is not time independent.
OK, that is also possible, but the advantage of using Lagrangian and Hamiltonian methods becomes less obvious in that case.