Troshin O. Conformities to the law of power correlations are in high-loaded tribosystems and ways of increase of their wearproofness

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0410U002717

Applicant for

Specialization

  • 05.02.04 - Тертя та зношування в машинах

28-05-2010

Specialized Academic Board

Д 26.059.03

Essay

In dissertation work the dependences of speed of work of dissipation between the elements of different tribosystem are got. It is set, that by a basic factor, on which speed of work of dissipation relies in triboelements there is speed of deformation which considerably anymore in triboelement which has the less value of the module of resiliency and the coefficient of Puasson. It is set that for low kinematics pairs the speed of dissipation in triboelements differs in 10-100 times, for higher kinematics pairs in 1,5-2 times. It is developed structural and mathematical models of tribosystem as a "thermal generator". It is set, that element at which is a thermal generator in tribosystem large size of speed of work of dissipation. On the base of structural model of tribosystems, as a thermal generator, the mathematical model of distributing of thermal streams is developed between triboelements. A model allowed to get calculation dependences of distributing of temperatures, gradient of temperatures and thermal streams, between triboelements after the linear coordinate of triboelements. The analysis of model rotined that in tribosystems it is possible thermal streams to manage by the change of thermal resistances one or other triboelement. It is set that as structural elements which increase thermal resistance can come forward dif-ferent sort of coverage or plates, fastened mechanical or another way on-the-spot friction of basic material. As a design, application of laminas, rotined from identical material, that and triboelement, gives a positive effect on a management thermal streams, and also materials with the low coefficient of heat-conducting, and, consequently, with high thermal resistance. Dependences of distributing of thermal streams in tribosystem taking into account thermal resistances of materials of elements are got. By an experimental way, in laboratory terms, dependences of tribology of technically descriptions (speed of wear, temperature, coefficient of friction) for tribosystem with different thermal resistances are got. It is set, that, multiplying thermal resistance in triboelements, which is a thermal generator, it is possible to handle thermal streams, and, consequently, to lower speed of wear and coefficient of friction on the whole. It is set, that in the decline of speed of wear and coefficient of friction the processes of transfer of mass, anisotropies of structure and tribology of mechanical reactions, on the surface of friction are instrumental.

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