STABILITY AND UNIQUENESS OF THE PROCESS OF FORMING PARTS BY PRESSURE TREATMENT
In the treatment ofpressure opportunities for products specified form limited by the terms of uniqueness and stability of the processes of forming a given external influence. On the basis of variation of the equilibrium conditions and equilibrium in the form of Jourdain are obtained general conditions of bifurcation and sustainability, taking into account, in con- trast to inequality R.Hill, the impact speed of the external load. This approach from uniform positions allows to define in elastic-plastic bodies moments of the start changing required shape of the product in the process of active external loading and unloading, as well as in the case of zero external loading speed.