Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Nonlinear Dynamics Analysis of Trusses Applied to Aerospace Structures
Submission Author:
Lucas Sardinha de Arruda , SP
Co-Authors:
Lucas Sardinha de Arruda, Reyolando Brasil
Presenter: Lucas Sardinha de Arruda
doi://10.26678/ABCM.COBEM2017.COB17-0331
Abstract
In this work, we perform a simplified nonlinear dynamic analysis of an aerospace structure - a truss boom - to study the impact of our geometrically and material nonlinear model in its dynamic behavior. For this, we have implement a numerical integration step-by-step algorithm for the resolution of non-linear dynamic systems based on the Newmark-beta algorithm, where the resolution of dynamic equilibrium iterations in each time step are performed by Newton-Raphson method. The boom structure, similar with the ADAMmast©, is modelled as a 2D truss structure under the influence of a dissipative harmonic load to simulate the thruster effect in a hypothetical attitude control situation. Finally, we present a brief discussion of the program in the scope of bi-dimensional problems.
Keywords
nonlinear dynamics, Aerospace Structures, Deployable Structures, Planar Truss
