基于计算机仿真的3D打印血管材料力学性能研究  

Computer-aided simulation-based studies on mechanical properties of the materials for blood vessel 3D-printing

作　　者：王继燕[1] Wang Jiyan(School of Science,Shandong Jiaotong University,250357,Jinan,China)

机构地区：[1]山东交通学院理学院

出　　处：《应用力学学报》2019年第6期1379-1383,I0009,共6页Chinese Journal of Applied Mechanics

基　　金：山东省自然科学基金项目(ZR2017LA005);山东省高等学校科技计划项目(J16LJ11)

摘　　要：利用光固化与离子固化相结合的3D打印方法打印圆柱体,假设材料各向同性,通过压缩实验测得了材料的弹性模量和压缩强度;建立了血管和血液的流固耦合模型,采用有限元分析方法,分析了一个心动周期内流体速度入口条件下五个特征时刻的流体速度分布和固体管壁的力学特征。结果表明,在心脏射血期峰值时刻,血液流速和固体管壁承受应力都达到最大值,其中应力最大值为2018Pa,远小于材料的压缩强度。A cylinder is printed from the hydrogels by 3 D-printing technique combining UV curing and ion curing. On the isotropic assumption, elastic modulus and compressive strength of the cylinder are measured by compression experiments. After building fluid-solid coupling model of blood vessel and blood, motion characteristics of the fluid and mechanical characteristics of the solid wall in five characteristic points of time in a cardiac cycle are measured and analyzed by finite element analysis method. Result show that both the velocity of the blood and the stress of the solid wall reaches the maximum. Among them, the maximum stress reaches 2018 Pa, far less than the compressive strength of the material.

关 键 词：3D打印 弹性模量 流固耦合 仿真分析 

分 类 号：TB12[理学—工程力学]