Development model and experimental characterization of residual stress of 3D printing PLA parts with porous structure

Porous structural materials are widely adopted in medical field owing to their excellent mechanical and physical properties. The 3D printing technology offers new opportunities for the preparation of porous structures. However, during 3D printing of porous structure, continuous rapid heating and cooling cycles lead to residual stress. Severe quality defects including cracks, warpage, and deformation caused by the residual stress have remained to...