Refined Unified Formulation for Efficient Folding and Unfolding Analyses of Slender Thin-Walled Structures

Autor:	Zahra Soltani, Matthew Santer
Rok vydání:	2022
Předmět:	Technology Science & Technology Engineering Aerospace & Aeronautics Aerospace Engineering Engineering Aerospace 0901 Aerospace Engineering 0905 Civil Engineering 0913 Mechanical Engineering
Zdroj:	AIAA Journal. 60:5559-5569
ISSN:	1533-385X 0001-1452
DOI:	10.2514/1.j061645
Popis:	We present a high-fidelity refined unified nonlinear finite element formulation for the efficient and robust analysis of slender thin-walled bodies during highly nonlinear deformation. Our formulation utilizes an independent discretization of the displacement field along the beam axis and over the cross section. By matching different refinements in different cross sections, it is able to apply higher-order beam theories in highly deformed regions, to capture complex buckling and postbuckling behavior, whilst retaining the computational efficiency offered by lower refinements elsewhere. The exemplar structure for this paper is the tape spring—a commonly proposed component of deployable structures with ability to combine self-deployment, via a release of stored strain energy, with locking into a relatively stiff geometric configuration with a curved cross section. To simulate localized folds due to a flattening of the cross section, the arc-length method with an automatic increment technique is employed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e13a6d773e7f3386781ae5e06ca2cec7 https://doi.org/10.2514/1.j061645 Zobrazit plný text záznamu