English to Russian Tech/Engineering Mechanics / Mech Engineering Технические расчёты, компьютерное моделирование

Slab method is a simple analytical procedure based on principles of mechanics. We can assume a simple relation between forming load and material flow stress in the form:
F = k
A, where k is an empirically determined constant which takes into account friction, redundant deformation etc.
The general methodology involved in slab method can be stated as follows:
First the material under deformation is sliced into infinitesimally small portions. Then force balance is made on the small element. From force balance a differential equation in terms of the forming stress, geometric parameters of the billet and friction coefficient is formulated.