Inverse model of large-displacements beams

ALEJANDRO ALBANESI; VICTOR D. FACHINOTTI; ALBERTO CARDONA

Varsovia

Conferencia; Multibody 2009, ECCOMAS Thematic Conference; 2009

European Community on Computational Methods in Applied Sciences (ECCOMAS)

The goal of the present work is to introduce a finite element model for the inverse analysis of large-displacements beams in the elastic range. The problem consists in determining the initial shape of the beam such that it attains the design shape under the effect of service loads. This formulation has immediate applications in fields such as compliant mechanism analysis and design where flexible links can be modelled as large-deflection beams. Numerical tests for validation purposes are given, along with applications for the inverse analysis of compliant mechanisms with distributed compliance. The element is being implemented in the MECANO mechanism analysis package.