Comparison of results in application of different methods of deformation
strengthening
Abstract
In exact analyses of bodies in the elastic-plastic area, the behaviour
of the material above critical stress values plays a key role. In
addition, under cyclic stress, important phenomena to be taken into
account are the various types (modifications) of strengthening and
design (adaptation) of the material or structure. In this process, it is
important to define several groups of characteristics. These include for
instance initial area of plasticity or load which defines the interface
between elastic and plastic deformation area. The characteristics also
include the relevant law of plastic deformation which specifies the
velocity direction of plastic deformation during plastic deformation.
The strengthening condition is also important to determine position,
size and shape of the subsequent loading area. The practical part of
this article is dedicated to the comparison of results obtained in the
analysis of stresses and deformations of particular structural elements
in the elastic-plastic area by FEM using models of different types of
deformation strengthening.