Гомельский государственный технический университет имени П.О.Сухого

Новые поступления электронной библиотеки

Приведены теоретические сведения по дисциплине «Прогрессивные технологии обработки
конструкционных материалов». Изложены описание, характеристики и научные основы развития
прогрессивных технологий обработки конструкционных материалов.
Для магистрантов специальности 7-06-0714-01 «Инновационные технологии в металлургии» дневной и заочной форм обучения.

2024-03-18
Яхно, В. Н.

Рассматриваются актуальные проблемы обучения иностранных студентов дисциплине «Философия» на английском языке. Формулируются особенности и возникающие затруднения при организации и проведении основных форм учебных занятий: лекций и семинаров. Предлагаются возможные педагогические стратегии, которые могут способствовать эффективному освоению указанного курса.

2024-03-18
Sergienko, V. P., Tkachev, V. M., Stolyarov, A. I.

A stochastic structure model of a composite material incorporating n-component is
considered. Calculation results of the stress-strain state of multicomponental frictional
composites are cited. Regularities of microcrack onset and growth are discussed, and
failure mechanisms of composites with porous structure under service loading are
illustrated.

2024-03-15
Sergienko, V. P., Tkachev, V. M., Stolyarov, A. I.

The decisive effect on the frictional and wear characteristics of the brake system is exerted by
temperature generated at friction. So far, to design efficient brake joints employed in vehicles it's required to
take account of their heat loading during operation. In the present work a system of interrelated problems has
been considered, namely the contact, heat and thermoelastic ones. The conditions of the contact were given for
the movable interface. The kinetic behavior of the thermal and contact parameters were taken into account at
calculating temperature fields and stresses in the friction zone. To calculate temperature fields, heat models of
the friction contact were elaborated to make allowance for redistribution of heat flows at friction. Based on
numerical methods surface and mean bulk temperatures in the friction pair were calculated. It has been
established that due to heat generation during friction the actual contact area in disc brakes contracts and
becomes about 30% of the nominal one. This brings about inhomogeneity of temperature fields and considerable
rise of surface temperatures and thermal stress in the rubbing bodies. The proposed calculation method can be
used to forecast service characteristics of brakes and to optimize brake design for given materials of the friction
pair.

2024-03-15

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