S. Hernández, E. Menga, C. López, A. Baldomir, M. Cid Montoya, D. Freire, S. Moledo, P. Naveira

DOI Number: N/A

Conference number: IFASD-2017-093

This paper presents a MATLAB managed software that is able to obtain the frequency domain response of assembled structures with local nonlinearities, which are usually concentrated in the connections between two components or among systems and the structure. First, a decoupled formulation in the frequency domain that splits the stiffness of the structure in two parts (contribution of the joints and contribution of the remaining components) and that deals with local nonlinearities is presented. A direct time integration of the State-Space equations is as well formulated in order to validate the results of the decoupled approach. Afterwards the MATLAB platform is briefly described, including the graphical interface that helps the user to define the dynamic problem. To end, three application examples are presented, including a simplification of two fuselage segments and two real connections among aircraft systems and the fuselage.

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In Categories: 1.Events, Dynamic loads, IFASD 2017
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