Finite element analysis for mechanical response of Ti foams with regular structure obtained by selective laser melting

摘要: Abstract Metal-based cellular materials with periodic structures are currently the preferred choice as bone/cartilage implants under load-bearing conditions due to their controlled pore interconnectivity and porosities. This report presents a new methodology for structural analysis of using X-ray microtomography dual-level finite element modeling (FEM). A three-dimensional (3D) structure titanium foam produced selective laser melting (SLM) is obtained an microtomography. FEM based on 3D used simulate deformation behavior regular uniaxial compression, computed results compared directly interrupted compression experiments performed deformed structures. The behaviors simplified cylindrical hexahedral struts simulated, demonstrate that unavoidable defects in actual affect mechanical stability significantly. Additionally, buckling-induced analyzed by introducing imperfection effects certain selected process variables, such internal angle diameter, also examined through series simulations.