Kysilyova I. Method of solving elastоplastic problems considering dislocation distribution in deformable materials.

Object of research – prismatic bar of low carbon steel which is the element of constructions. Subject of research – dislocation structure of metallic materials and its influence on stress characteristics of twisted prismatic bar. The aim of research – a study od the dislocation distribution effect on elastic-plastic stresses in the twisted prismatic bar of arbitrary cross section. Methods of research – minimal additional energy principle, Ritz method, Gauss' method, random variables transformation method, theory of complex variables method, anisotropy of elastic modulus determination, the maximum likelihood method, method of variable parameters of elasticity, regression analysis and experimental methods of mechanical properties determination, Pierson' test and sigh criterion. A new scientifically based method of solving elastoplastic problems of twisted bar considering dislocation distribution has been elaborated, investigation in detail of metallic materials dislocation structure evolution was conducted. Branch of implementation - machinebuilding and building industry, nanotechnology.