Macro-Mechanical Modeling of 3D Printed Material

Nonconventional manufacturing processes are gaining wide popularity among the manufacturing industries. Additive manufacturing (AM) as one of the nonconventional manufacturing processes such as rapid prototyping, three-dimensional (3D) printing, layered manufacturing, and generative manufacturing has emerged with several beneficial features. The underlying principle of 3D printing involves the deposition of several layers of uniform thickness (mostly). Fused deposition modeling (FDM) is one of the 3D printing technologies recognized widely owing to its simplicity and reduced time of realization of a new product. The strength of FDM parts are largely governed by various process parameters and deposition strategy. The chapter describes the macro-mechanical modeling approach and procedures adapted to predict the behavior of FDM parts. A single layer deposited for 3D printing to produce a part using FDM is assumed as a Lamina, and the mechanical behavior of 3D printed layers is analyzed. Monotonic behaviors of dog bone specimens, produced by FDM process using different deposition strategy, are predicted. Classical laminates theory (CLT) and modified CLT approaches of macro-mechanical modeling of FDM part is adopted to compare the numerical results obtained through finite element analysis.