FINITE ELEMENT MODELLING OF INVERSE LARGE-DISPLACEMENT BEAMS

ALEJANDRO ALBANESI; VICTOR FACHINOTTI; ALBERTO CARDONA

San Luis

Congreso; Congreso de Mecánica Computacional y Aplicaciones ENIEF 2008; 2008

AMCA - Asociación Argentina de Mecánica Computacional

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 consist in determining the initial shape of the beam, such that it attains the design shape under the effect of service loads. This formulation has inmediate applications in fields such as compliant mechanism synthesis, where flexible links can be modeled as large-deflection beams, among others. The element will be implemented in the MECANO mechanism analysis package, and an example to a structural problems is given.