ENERGY ABSORPTION STUDY OF FLEXIBLE ELASTIC DOT MATRIX SUPPORT BASED ON DLP PROCESS
FANG Chuang
JI XiaoGang
DENG Lin
WANG Wei
Abstract：In order to meet the structural design and prototyping requirements of micro multi-functional brackets,a study on the design and preparation of flexible elastic dot matrix brackets based on digital light processing(DLP)rapid forming process was carried out.Based on the geometric topology design of the cell structure,the equivalent mechanical model of the cell structure was established by using Timoshenko beam theory to obtain a mathematical model for predicting energy absorption,and the influence of cell geometry and load direction was analyzed in focus.The novel flexible photosensitive resin was used as the forming material,and the DLP forming process was selected to realize the high-precision and high-efficiency preparation of the corresponding dot matrix structure.Combining numerical simulation and physical experiments,the effects of rod diameter,cell edge length and number of dot matrix layers on the energy absorption characteristics of the dot matrix structure were investigated.The results show that the out-of-plane compression of the dot matrix structure has significantly better energy absorption characteristics than in-plane compression,and the smaller the cell edge length,the larger the rod diameter,and the more the number of dot matrix layers,the better the energy absorption characteristics.The laws obtained from the theoretical analysis,numerical simulation and physical experiments are consistent,which can provide theoretical reference for the subsequent development of skin tissue engineering scaffolds.
Keywords：Tissue engineering scaffoldFlexible elastic dot matrix structureEquivalent mechanical modelDLP forming processCompression energy absorption
Publication Date：2024-02-15
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：7( 48-54 )