Search academic texts

Information × Registration Number 0211U006011, 0109U007352 , R & D reports Title Development of models and calculation methods for themal and stress state of complex structure bodies under combined themal and force loading popup.stage_title Head Kushnir Roman Mykhailovych, Registration Date 15-02-2011 Organization Pidstryhach Institute of Applied Problems of Mechanics and Mathematics NAS of Ukraine popup.description2 The mathematical models and procedures for determining the thermostressed state of thermosensitive massive bodies under conditions of convective heat exchange have been developed. With the help of these models and procedures we have studied: the quasi-static thermoelastic behavior of a space with cylindrical cavity, the surface of which is loaded by uniformly distributed pressure, and а half-space, heated by an instantaneous linear heat source. The mathematical model to describe the thermomechanical behavior of a massive piecewise homogeneous body composed of two parts has been formulated. In one part a finite number of volume heat sources is acting. An effective procedure for their solving has been proposed. The procedure is based on utilization of Green's functions of three-dimensional heat conduction and thermoelasticity problems for piecewise-homogeneous space. The static thermoelastic state of two ideally contacting semi-infinite bodies at different physico-mechanical and geometrical characteristics has been studied. In one of the bodies the local ellipsoidal heat sources act. The mathematical models to define and analyze analytically the singularities of the thermostressed state parameters in the vicinity of irregular points of piecewise-homogeneous thermosensitive bodies for stationary thermal state have been proposed. The procedure has been developed to investigate the distribution of stresses, displacements, total and specific energy in the vicinity of such type of points of the material conjugation surfaceі which is applied for their study in the vicinity of the tip of a semi-infinite cracks-type defect and absolutely rigid inclusion located on broken material interface. A set of configurations of wedge systems, the stress-strain state parameters of which under condition of anti-plane deformation are described by closed analytical relations, has been found. Product Description popup.authors Вовк О.М. Гарматій Г.Ю. Горечко Н.О. Кушнір Р.М. Махоркін І.М. Махоркін М.І. Попович В.С. Процюк Б.В. popup.nrat_date 2020-04-02 Close