Composite energy absorption structure based on square unit twin crystal type micro-truss structure and 3D printing method of composite energy absorption structure

• Main Authors: YAN PENGFEI, LU ZHEHAO, YAN BIAO
• Format: Patent
• Language: Chinese; English
• Published: 25.09.2020
• Subjects: ADDITIVE MANUFACTURING TECHNOLOGY; ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The invention relates to a composite energy absorption structure based on a square unit twin crystal type micro-truss structure and a 3D printing method of the composite energy absorption structure. The composite energy absorption structure is composed of a plurality of layers of twin crystal type micro-truss structure bodies which are subjected to 3D printing layer by layer in the Z-axis direction; the twin crystal type micro-truss structure bodies are composed of two twin crystal type micro-truss areas which take middle lines as symmetric lines, and the two twin crystal type micro-truss areas are formed by rotating left single crystal type micro-truss structure bodies and right single crystal type micro-truss structure bodies which take the middle lines as the symmetric lines around Z axes in opposite directions and at the same angle; and two-dimensional point array structure units are square units. Compared with the prior art, according to the composite energy absorption structure based on the square unit