Three-Dimensional Problems of Thermoviscoplasticity: Focus on Ukrainian Research (Review)

Моделювання Поведінки Елементів, Виготовлених Із Матеріалів З Пам’яттю Форми При Значних Деформаціях

“…У загальному випадку значення деформацій є функціями процесу зміни напружень і температури, які визначаються характеристиками всього попереднього процесу зміни фізичних факторів, а не тільки поточними значеннями. Докладні відомості з цього питання можна знайти в роботах Ю. М. Шевченка і його учнів [5].…”

Computer Engineering and Design of Cast Parts for Internal Combustion Engine Crankcase

“…The current state of the issue of design of engine parts and CAD of technological preparation of production at one of the defining stages of production of engine partsthe manufacture of cast engine partsdoes not allow talking about an effective compromise, often in real production, we can talk about deep contradictions [1,[3][4][5]. The reason for this is the lack of knowledge of many processes occurring during the formation of the casting and ultimately determine the real, not theoretically designed design of the part, as well as the accuracy of the geometric parameters, which is one of the main indicators of the quality of cast parts of the internal combustion engine.…”

“…First of all, this applies to the production of cast engine parts (80-90 % of cast parts by weight in the design of the engine). The level of harmonization of design and technological approaches necessarily implies a compromise between design development and the design and implementation of the technological process of their production, is the determining factor in obtaining quality parts, ensuring the achievement of the specified performance, reliability, and resource engine [2][3][4]. The technological aspects must be taken into account in the design and application of CAD for engines.…”

Development of the method with enhanced accuracy for solving problems from the theory of thermo-pseudoelastic-plasticity

“…The method of component-wise splitting, proposed in paper [12], is one of the most effective when solving numerically the multidimensional nonstationary problems from the theory of thermo-elastic-plasticity [9,16]. In a combination with representing the desired quantities in the form of spline-functions, it provides for the improvement in the accuracy of calculations by two orders of magnitude.…”

“…In a general case, the values of deformations represent functions of the process of change in stresses and temperatures, which are defined by characteristics of the entire preceding process of change in the physical factors, rather than the current values only. Detailed information on this issue can be found in papers [9,11,16].…”