Continuum damage mechanics (CDM)-based finite element analysis was performed to predict the mechanical behavior of a 3D-printed curvilinear continuous carbon fiber reinforced thermoplastic (c-CFRTP). Elasto-plastic properties of the 3D-printed c-CFRTP, including its damage initiation, evolution, and propagation, were identified by conducting monotonic and cyclic tensile tests on three specimens (i.e., [(±45)2]S, [(0/90)2]S, and [(±67.5)2]S). Then, an S-shaped curvilinear c-CFRTP was 3D-printed and tested under monotonic tensile loading conditions. The non-linear mechanical behavior of the S-shaped curvilinear c-CFRTP due to tensile loading was well predicted by means of finite element analysis using the constructed CDM-based material model.
