Modelling, Testing and Optimization of 3D Printed Metal Lattice Structures

Abstract

In this thesis, computational investigations were conducted in order to derive novel lattice structure designs through topology optimization, and characterize their mechanical behavior. In addition, these computational investigations have been accompanied with experimental investigations to validate the results. It was found that the lattice named RS3 performs among the best structures in both shear and uniaxial loading. Furthermore, 3 new sheet based structures are introduced and characterized. A new method for evaluating the onset of densification strain is also introduced using the contact area strain curve. In conducting numerical investigations on these specimens, it was found that a damage model and material model is needed on order to better evaluate the energy absorbed.

Date of Award	Jul 2021
Original language	American English