Folding simulation of TRAC longerons via unified one-dimensional finite elements
Riccardo Augello, Erasmo Carrera, Alfonso Pagani, Sergio Pellegrinodownload PDF
Abstract. This paper proposes a simulation of the folding phase of TRAC deployable booms using refined one-dimensional finite elements in the framework of the Carrera Unified Formulation. The mathematical model involves standard beam finite elements placed along the length of the longeron, and Lagrange polynomials as expansion functions for the cross-sectional domain. The nonlinear governing equations are written recalling the principle of virtual work, and they are linearized using the Newton-Raphson scheme. The contact between the two flanges is simulated with linear spring which activate when pre-defined node pairs approach under a fixed tolerance. Two simulations are carried out, including or not the contact behavior, respectively. The results highlight the capability of the proposed model to deal with large displacements and contact between the ultra-thin flanges of the structure.
Deployable Booms, TRAC longerons, Carrera Unified Formulation, Contact Mechanics, Nonlinear Analysis
Published online 11/1/2023, 6 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: Riccardo Augello, Erasmo Carrera, Alfonso Pagani, Sergio Pellegrino, Folding simulation of TRAC longerons via unified one-dimensional finite elements, Materials Research Proceedings, Vol. 37, pp 357-362, 2023
The article was published as article 79 of the book Aeronautics and Astronautics
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