Article 5117

Title of the article

 

Authors

Batishcheva Oksana Mikhaylovna, candidate of technical sciences, associate professor, head of sub-department of transport processes and technological complexes, Samara State Technical University (244 Molodogvardeiskaja street, Samara, Russia), omb@list.ru
Papshev Valeriy Aleksandrovich, candidate of technical sciences, associate professor, sub-department of transport processes and technological complexes, Samara State Technical University (244 Molodogvardeiskaja street, Samara, Russia), pva_samara@mail.ru
Rodimov Gennadiy Aleksandrovich, candidate of technical sciences, associate professor, sub-department of transport processes and technological complexes, Samara State Technical University (244 Molodogvardeiskaja street, Samara, Russia), rgasamara@mail.ru

Index UDK

621.787

DOI

10.21685/2307-4205-2017-1-5

Abstract

Background. Analysis of the contact interaction of the surfaces of parts during ultrasonic assembly shows that the kinematics of the sliding of surfaces and the dynamics of their interaction depend on a large number of factors, among which one can single out a thermophysical factor. In this regard, the paper discusses the theoretical estimation of the temperature in the contact zone during the ultrasonic assembly.
Materials and methods. To estimate the temperature in the wear zone, the study proposes a theoretical-experimental method using the basic concepts of the theory of continuously operating sources. A thermophysical model of the process of contacting surfaces with the use of ultrasonic vibrations was developed, which made it possible to theoretically determine the temperature in the interface zone, depending on the wear modes and the materials of the parts in contact.
Results. Tables and graphs present the results of theoretical temperature calculations during simulation of the ultrasonic assembly process with variation of the materials of the parts, the pressing force of the indenter, and the amplitude of ultrasonic vibrations.
Conclusions. It is established that having surfaces contacting under conditions of ultrason ic interaction, microfusion of the points of the true contact of microroughnesses is possible. It is shown that the average temperature level cannot have a significant effect on the structural transformation of the metal. 

Key words

assembly, thermophysical model, ultrasonic vibrations

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Дата создания: 30.05.2017 10:31
Дата обновления: 30.05.2017 10:33