Topology Optimisation and Fabrication Aspects for Light Weight Design of an Articulating Beam of Article Launching System

Abstract

Light weight design of an articulating beam that is utilised for erection mechanism of heavy article (above 15-ton class) is quite challenging task considering high stiffness requirement at erection start mode. The research work presents structural topology optimisation of an articulating beam to obtain optimal material distribution within available space pertaining to required stiffness parameters and boundary constrains. Optimal weight of articulating beam structure is achieved using density optimisation technique aiming minimum compliance and volume. This study highlights problem formulation with solid isotropic material with penalisation optimisation technique with case study followed by discussion on various fabrication aspects for converting the topology results in to feasible design. As an outcome, optimal material design of the articulated beam is achieved that is converted into two feasible light weight designs considering manufacturing aspects. These designs are then validated for their structural adequacy with finite element analysis computing desired stiffness and strength parameters.