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Information × Registration Number 0214U003899, 0111U002374 , R & D reports Title Development of estimation calculation models of contact durability of bodies with cracks considering a contact between crack faces and a materials crack-resistance popup.stage_title Head Panasyuk Volodymyr; Datsyshyn Oleksandra, Registration Date 14-03-2014 Organization Karpenko Physico-Mechanical Institute of the National Academy of Science of Ukraine popup.description2 Research object: contact durability of tribojoint elements. Work purpose: The development of computer models for the study of fracture processes and evaluating the durability of the contact trybospryazhen. The development of the theoretical foundations of the contact fatigue of structural materials. Formulation of recommendations to improve the durability and reliability trybospryazhen given operating conditions and the characteristics fracture of materials. The basic results: Solved new two-dimensional contact problem for bodies with boundary and subsurface cracks, the banks are in contact under load, which moves along the edge of the body. The general conditions of contact coast: an open crack - smooth contact - sliding with friction - jamming . Different configurations of operating parameters (sliding friction in contact between the rolling bodies and between crack), the orientation and location of the crack was calculated contact maps shores stress intensity factor (SIF), SIF KII for a particular cycle of contact and range of SIF KII, the parameter that controls the crack growth at the stage of distribution on the mechanism of cross- shear. Solutions mentioned above and the results are used as a baseline for the study of the formation of the original features (shear) phase of contact- fatigue damage as pitynh , delamination and rozkryshuvannya contact surface of rolling bodies to study the influence of residual stresses in circular crack in the contact zone and the processes of cracking fretting at cell pairs. Construct trajectories of surface cracks or delamination pitynh form in the contact zone of rolling bodies considering rolling a pair of operating parameters and characteristics of cyclic crack resistance of materials to transverse shear and normal gap. Calculated contact durability and constructed theoretical curves for fatigue contact elements of wheel-rail (steel 75HHST, RSB12, 65G) and backup rolls rolling mills (9HS and SKH). Application areas: calculations on strength and durability of machine joint and construction elements that work under fatigue contact conditions. Product Description popup.authors Глазов Артем Юрійович Кравчук Оксана Андріївна Левус Андрій Богданович Марченко Григорій Петрович Пришляк Роман Євгенович popup.nrat_date 2020-04-02 Close