| 应用于承载骨的梯度多孔支架力学性能研究 |
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| 引用本文： | 李传生、曾寿金、许明三、刘广、何伟辉.应用于承载骨的梯度多孔支架力学性能研究[J].福建工程学院学报,2021,0(4):349-355. |
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| 作者姓名： | 李传生、曾寿金、许明三、刘广、何伟辉 |
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| 作者单位： | 福建工程学院机械与汽车工程学院 |
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| 摘 要： | 基于三周期极小曲面(TPMS)设计5种不同孔隙率梯度分布的梯度多孔支架，利用选区激光熔化(SLM)技术制造Ti6Al4V梯度多孔支架。该支架具有类似于人骨梯度多孔结构的梯度孔隙率。压缩测试结果表明，5种梯度多孔支架的弹性模量为8.75~13.88 GPa，抗压强度为219.48~ 528.21 MPa，符合承载骨的弹性模量和抗压强度要求。弹性模量和抗压强度都随着平均孔隙率P- (或边缘孔隙率PB )的增大而减小，P-对弹性模量和抗压强度的影响大于PB。采用Gibson-Ashby的拟合结果可以为承载骨的设计提供参考。
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| 关 键 词： | 选区激光熔化 梯度多孔支架 三周期极小曲面 力学性能 |
Research on the mechanical properties of gradient porous scaffolds applied on load-bearing bones |
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| LI Chuansheng,ZENG Shoujin,XU Mingsan,LIU Guang,HE Weihui.Research on the mechanical properties of gradient porous scaffolds applied on load-bearing bones[J].Journal of Fujian University of Technology,2021,0(4):349-355. |
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| Authors: | LI Chuansheng ZENG Shoujin XU Mingsan LIU Guang HE Weihui |
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| Affiliation: | School of Mechanical & Automotive Engineering, Fujian University of Technology |
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| Abstract: | Gradient porous scaffolds with 5 different porosities that have gradient distributions were designed based on triply periodic minimal surfaces (TPMS), and Ti6Al4V gradient scaffolds were fabricated with selective laser melting (SLM) technology. The scaffold has the gradient porosity similar to the gradient porous structure of human bones. Compression test results show that the elastic modulus and compressive strength of scaffolds with five gradient porosities are 8.75~13.88GPa and 219.48~528.21MPa, which meet the elastic modulus and compressive strength requirements of load-bearing bones. Both elastic modulus and compressive strength decrease with the increase of P(or PB), and the effect of P on elastic modulus and compressive strength is greater than that of PB. The fitting results of Gibson-Ashby can provide reference for the design of load-bearing bones. |
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| Keywords: | selective laser melting gradient porous scaffolds triply periodic minimal surfaces mechanical properties |
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