Abstract
Under conditions of the influence of space environment factors, the thin-walled load-carrying transformable-volume structures are subjected to volumetric deformation and long-time exposure to external loads, close to maximum permissible design values. The required functional properties of transformable-volume structures are ensured on the basis of applying surface engineering methods, whose effectiveness is difficult to confirm as there is no possibility to reproduce the space environment factors complex under the terrestrial conditions. The method for verification of applied technologies regarding the modification of surface properties was described. It was based on the comparison of finite-element and experimental-computational models of displacements in equivalent fragments of the transformable volume structures surface. Qualitative and quantitative evaluation of methods is given, allowing changing the rigiditystrength strength characteristics of transformable-volume structures for space applications without alteration of their mass and compactness.
Highlights
Deployable structures refer to the actively developing field of space technologies, which allow simplifying the delivery of useful freight to the near-Earth orbit
Alteration in spatial rigidity of a transformablevolume structures (TVS) shell The transformation of a circumferential fragment of the conical shell surface into a fold corrugation with width АВ (Fig. 1a) should be maximally approached to the equality condition of cone fragment meridian length before and after the transformation that allows producing the shell folding in a compact shape without tension and compression of the material
The residual plastic deformations in the apexes of the folds lead to the formation of circular corrugations (Fig. 1b, III), which fulfil the function of stiffeners in a TVS shell after deployment
Summary
Deployable structures refer to the actively developing field of space technologies, which allow simplifying the delivery of useful freight to the near-Earth orbit. A separate class of deployable structures are transformablevolume structures (TVS) with a metal shell (Fig. 1c), in which the use of geometric regularities of surface bending allows realizing the volumetric deforming, comparable with the bends of soft materials (Paton et al 2015). In creation of similar structures the main objects for research are the methods of surface engineering, whose application allows providing the required functional properties of the transformable shell with minimum weight and maximum compactness under condition of aggressive space environment factors (SEF) action. It is necessary to solve the problem of correctness of calculated evaluations at the stage of laboratory and check tests.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
