There are difficulties in the formulation and solution of problems for follower loading, temperature actions, whether Lagrange principle is used. By dividing external loads internal deformation fields that exist according to their own laws, we focused on advantages mechanics deformable solids. This paper develops an approach study strain energy deformed systems, based criterion critical levels ...

The critical properties characterizing the formation of Floquet time crystal in prethermal phase are investigated analytically periodically driven $O(N)$ model. In particular, we focus on line separating trivial with period synchronized dynamics and absence long-range spatial order from non-trivial where is accompanied by period-doubling dynamics. vicinity line, a combination dimensional expans...