Open AccessNUMERCNAL ANALYSIS OF CONTACT INTERACTION OF BODIES WITH NEARLY FORM SURFACES
Author(s) -
Andrey Grabovskiy,
Mykola А. Tkachuk,
Natalia Domina,
Hanna Tkachuk,
Olha Ishchenko,
Mykola Tkachuk,
Pavel Kalinin,
Iryna Voloshina,
Vladeslav Tretyak,
Mariia Saverska,
Serhii Kutsenko,
Oleg Loznyi
Publication year - 2021
Publication title -
vestnik nacionalʹnogo tehničeskogo universiteta "hpi". mašinovedenie i sapr
Language(s) - English
Resource type - Journals
ISSN - 2079-0775
DOI - 10.20998/2079-0775.2021.2.05
Subject(s) - finite element method , contact mechanics , mechanics , contact region , stress (linguistics) , contact area , stamping , contact force , materials science , stress–strain curve , boundary (topology) , structural engineering , mathematical analysis , mathematics , engineering , classical mechanics , physics , composite material , metallurgy , layer (electronics) , linguistics , philosophy
Contact interaction of structural elements has been studied in the case of nominally close (nearly matching) surfaces. A non uniform gap is present between the contacting parts. Contact pressure and contact spot depend on the shape of this gap. Correspondingly so does the stress-strain state of the contacting bodies too. Since the problem is essentially nonlinear, the contact pressure distribution and the contact zones change with the growing loads. The solution is qualitatively different to the case of perfectly matching bodies. For the latter case, the contact pressure is linearly proportional to the load and the contact zone is predefined. Hence for the real structures for which the deviation from the nominal shape is unavoidable the impact of these inaccuracies on the contact pressure distribution and the stress-strain state need to be taken into account. This problem is addressed in the paper by example of elements of stamping dies.Keywords: element of stamping dies, stress-strain state, contact pressure, contact interaction, variational inequalities, Kalker’s variational principle, finite element method, boundary element method