TPWJ, 2018, #11-12, 41-51 pages
Journal The Paton Welding Journal
Publisher International Association «Welding»
ISSN 0957-798X (print)
Issue #11-12, 2018 (November)
Thin-walled welded transformable-volume structures of space purpose
L.M. Lobanov and V.S. Volkov
E.O. Paton Electric Welding Institute of the NAS of Ukraine
11 Kazimir Malevich Str., 03150, Kyiv, Ukraine. E-mail: email@example.com
The rational methods of construction of metal transformable shells with the aim of creation of the space-purpose structures were investigated. The mathematical modeling of the neutral shell surface movement of the transformable-volume structure (TVS) was performed, the result of which was used to set the reference surface at the kinematic modeling of its stress-strain states during a compact folding. The parameters of the process of welding thin shells of stainless steel were determined, guaranteeing the maximum approaching of physicomechanical properties of welded joints to similar properties of the base metal, thus providing their vacuum density. The methods of surface modification of thin metal shells of stainless steel, which allow improving the safety margin of TVS of space purpose without changing their mass and compactness were developed. The possibility was experimentally confirmed and the conditions of stability of complete reverse transformation of a multisectional conical-type TVS were formulated. 7 Ref., 12 Figures.
deployable structures, thin shells, microplasma welding, microstructure and weld metal, surface engineering
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