Property and finite element analysis of 3D printing flexible material
                                                                  ZHANG Yuan yuan, LI Jun, SHI Kai
                              (Pneumatic technology center, Harbin Institute of Technology, Harbin 150080, China)

Abstract: Aiming at the problems of property and finite element analysis of 3D printing flexible material, the mechanical properties and the simulation method with finite element of 3D printing flexible specimens were studied. Experimental study on the mechanical properties with flexible specimens under different printing conditions were carried out, the effect of printing conditions on the elastic modulus and Poisson s ratio of the specimens was gotten. The specimen was simulated with stress and strain data from uniaxial tensile test and different finite element analysis method of Abaqus, the best method for simulating 3D printing flexible material was obtained, and the method was verified with the simulations of complex structural components. The results indicate that the height and printing direction could affect the elastic modulus and Poissons ratio of the 3D printing flexible specimens. Specimens with different printing conditions could be equivalent to specimens of different materials, and the simulation result is the best when the 3D printing flexible material, which is set as hyper elastic material.

Key words: 3D printing; flexible material; mechanical property; finite element analysis