Моделювання процесів вібраційного ущільнення ливарних форм з урахуванням асиметрії фрикційних сил: Processy litʹâ, 2021, Tom 143, №1, p.43-49

• Date: 2023
• Main Authors: Ноговіцин, О. В., Русаков, П. В., Школяренко, В. П., Сіренко, К. А.
• Format: Article
• Language: Ukrainian
• Published: National Academy of Sciences of Ukraine, Physical-Technological Institute of Metals and Alloys of NAS of Ukraine 2023
• Subjects: ливарна форма; формувальний пісок; вібраційне ущільнення; асиметрія фрикційних сил
• Online Access: https://plit-periodical.org.ua/index.php/plit/article/view/49
• Journal Title: Casting Processes

Received 10.12.2020 UDK 621.744.362 The purpose of the work is to create a scientific basis for modeling and analysis of the interaction of the sand molding mixture with the elements of the mold in the process of vertical excitation of vibrations of the mold. Under the influence of external vibration forces in the mixture there is an alternating stress-strain state, there is a destruction of the primary structural bonds and weakens the bonds between its individual elements, the final movements of mineral particles with the formation of denser packaging. In the process of physical modeling the peculiarities of excitation of the effect of asymmetry of frictional forces at vibration consolidation of molds are revealed. Experimental data have been obtained to determine the law of increasing density of the medium and the duration of vibration influence depending on the parameters of the asymmetry of frictional forces. The general principles of construction of new designs of foundry forms taking into account asymmetry of frictional forces are established. The design of a casting mold for casting hollow cylindrical castings is given.The results of the work expand the idea of the technological process of vibration formation using the effect of asymmetry of frictional forces.