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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 52
Edited by: B.H.V. Topping
Paper VI.6

An Equivalence Method to Compute Mechanical Properties of Repetitive Structures

M. de Benedetti*, R. Baldassarri+ and C. Scarponi*

*Aerospace Department, University of Rome "La Sapienza", Rome, Italy
+Alenia Aerospazio Div. Spazio, Rome, Italy

Full Bibliographic Reference for this paper
M. de Benedetti, R. Baldassarri, C. Scarponi, "An Equivalence Method to Compute Mechanical Properties of Repetitive Structures", in B.H.V. Topping, (Editor), "Advances in Computational Mechanics with High Performance Computing", Civil-Comp Press, Edinburgh, UK, pp 141-152, 1998. doi:10.4203/ccp.52.6.6
In this study is described the conceptual approach to a computational methodology for the determination of the elastic characteristics of complex repetitive structures like the radiating surface of a satellite Antenna Array. The procedure uses a Finite Element structural analysis technique and can be applied for those complex structures that, if meshed with normal procedures, could originate a too high number of degrees of freedom. In addition, the proposed methodology results useful in a design synthesis phase when the influence of macroscopic variables over the global structural performances has to be assessed in a parametric way. This procedure can be used to study thin-walled complex structures, through a low number of degrees of freedom, and it is based on the inversion of the elasticity equation in the constitutive theory, where the unknowns are the stiffness matrix elements.

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