Custom-Fit and Lightweight Optimization Design of Exoskeletons Using Parametric Conformal Lattice

Abstract

This paper presents an integrated design method for the customization and lightweight design of free-shaped wearable devices, illustrated by a lower limb exoskeleton. The customized design space is derived from the 3D scanning models. Based on the finite element analysis, the structural framework is determined through topology optimization with allowable strength. By means of generative design, the lattice library is constructed to fill the frames under different conformal algorithms. Finally, the proposed method is illustrated by the exoskeleton design case.

Finite Element Analysis Optimises Material Selection and 3D Printing of Lower Limb Exoskeletons

“…A revolute joint is responsible for connecting a leg that is able to bend at the knee to a pelvis that remains immobile. The weight of an exoskeleton can be reduced by selecting the appropriate materials or by optimising the design [23]. When comparing the prices and benefits of various materials, aluminium metal is preferred; however, titanium and carbon composites are preferred when both strength and cost are equally significant.…”