Study of Strain-Softening Stage in Structurally Inhomogeneous Materials

Vladimir Mironov, Olga Lukashuk, D. Bassir
2019 MATEC Web of Conferences  
The paper considersin terms of modeling and experimental testingthe softening stage manifested in structurally inhomogeneous materials under quasi-static and cyclic load. The method which is used to build the theoretical basis is typical for mechanics. It starts with defining a new material propertystrain-softening phase. The stage is realized in the form of a descending branch of the curve on computer diagrams recorded during simple tension or torsion tests on non-reusable specimens in a
more » ... ably rigid testing machine. The type of such a diagram is determined by the structural inhomogeneity of a material, which is defined by distribution law for strength and plasticity properties of structural elements. Complete stressstrain curves or diagrams (CSSD) with a branch descending to zero have been plotted for materials of various classes. Degradation of parameters of a descending branch on a computer diagram recorded for trained specimens provides a new angle on the subject of relation between static and cyclic material properties. The experiments and modeling which were carried out provide basic understanding of softening in terms of deformation.
doi:10.1051/matecconf/201925301003 fatcat:l52zlnm3uzgt5icrcpieyjcfpq