Design and Mechanical Properties Analysis of Radially Graded Porous Scaffolds

被引：0
作者：
Gao R. [1 ]
Li X. [1 ]
机构：
[1] School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai
来源：
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2021年 / 57卷 / 03期
关键词：
Finite element method; Mechanical properties; Radially graded porous scaffold; Triply periodic minimal surfaces;
D O I：
10.3901/JME.2021.03.220
中图分类号：
学科分类号：
摘要：
A design method based on Gyroid surface is proposed to build radially graded porous scaffolds. Radially graded porous scaffolds with the same average porosity and different porosity change rate are designed by adjusting central porosity Pin, marginal porosity Pout and gradient change rate n. The mechanical properties of radially graded porous scaffolds and homogeneous porous scaffolds are studied by finite element method (FEM) analysis and mechanical experiment, and their differences are compared. The results of FEM analysis show that the mechanical properties of the radially graded porous scaffolds are better than those of the homogeneous porous scaffolds with the same average porosity. The higher the average porosity is, the better the mechanical properties of radially graded porous scaffolds are. The results of mechanical experiments show that when the average porosity is 70%, the elastic modulus and compressive strength of radially graded porous scaffolds are (2.34±0.05)GPa and (67.63±1.33)MPa, respectively. The elastic modulus and compressive strength of radially graded porous scaffolds are (3.96±0.19)GPa and (90.83±3.35)MPa, respectively. The FEM analysis and mechanical experiment show that the radially graded porous scaffolds have better performances than the homogeneous porous scaffolds. © 2021 Journal of Mechanical Engineering.
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页码：220 / 226
页数：6
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