Numerical investigation on mechanical properties of cellular lattice structures fabricated by fused deposition modeling

摘要: Abstract Cellular lattice structures (CLS) with designed structural integrity are highly demanded in many applications such as light-weight industrial components and bone scaffold. In recent years, additive manufacturing (AM) processes have been found to be capable of producing products controllable porosity pore sizes. However, AM faces an inherent obstacle so that the CLS strut diameter varies along its length. This study uses finite element modeling predict effect variation struts׳ on elastic modulus well collapse stress using both beam solid elements. To determine mechanical behavior bulk material, compression test specimens fabricated fused deposition modeling. The results show model is stiffer than one since cannot capture effects material concentration at points variations. obtained does not differ significantly between models while difference negligible for stress.