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Information × Registration Number 0210U003676, 0107U010342 , R & D reports Title Development of the methods of calculation of residual stresses under multilayered surfacing of worn members and evaluation of its influence on thermal and mechanical fatique strength and life time of surfaced members popup.stage_title Head Senchenkov Igor Konstantinovich, Registration Date 24-02-2010 Organization S.P.Timoshenko Institute of Mechanics popup.description2 An objects of investigation are residual thermomechanical and microstructural state, fatigue strength of roll steal parts subjected by multilayered surfacing/ An aim of the work is to develop the methods of calculation of residual stresses and microstructure under surfacing of cylindrical parts and term of service of surfaced parts through with accounting of unsymmetry of operational cycle. Theoretical investigation were carried out on the base of thermomechanics of nonhomogeneous viscoplastic bodies and models of growing bodies. Iterative and time step methods as well as finite element method were used to calculate residual stress and microstructure of material under multilayered surfacing of cylindrical parts in particular rolls and dies/ Mathematical modeling of multilayered surfacing and subsequent operating of rolls was carried out/ with using specimens. It was found that the high plastic underlay fatigue strength of rolls is increased greater than 30% and tensile stresses is decreased on ~ 20%. Numerical and experimental fatigue results were compared. The results obtained can be used to investigate an influence of residual stresses in multilayered rolls and dies on fatigue and to choose the rational scheme of surfacing technology. Product Description popup.authors Баняс М.В. Жук Я.О. Левон Л.Г. Червінко О.П. popup.nrat_date 2020-04-02 Close