+高级检索
激光选区融化成形多孔硬骨支架的建模、仿真及实验研究
作者:
作者单位:

山东建筑大学

作者简介:

通讯作者:

中图分类号:

基金项目:

国家自然科学基金(41305124);山东省重点研发计划(2017GGX30128),2019年山东省新旧动能转换重大课题攻关项目


Modeling, simulation and experimental study of porous bone scaffold by using Selective laser melting
Author:
Affiliation:

Shandong Jianzhu University

Fund Project:

China Natural Science Foundation(Grant No. Shandong Provincial Natural Science Foundation, China (Grant No. ZR2016JL017) and the Key Research Development Program of Shandong Province, China (Grant No. 2017GGX30128).) and the Key Research Development Program of Shandong Province, China (Grant No. 2017GGX30128).

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    金属3D打印技术成为当前最具有发展潜力和发展前景的工业制造技术之一,通过SLM激光选区烧结技术,选取合理的烧结参数,将金属粉末烧结成型。建立了不同孔径的多孔支架复杂三维模型,并通过有限元分析进行应力、应变的模拟分析,获得了优化后的多孔支架三维模型,为后续的实验研究分析建立理论基础,然后通过SLM烧结技术制备316L不锈钢多孔支架,通过后期热处理实验、压缩试验、金相实验,对多孔试样进行力学性能分析、硬度测试以及表面微观组织分析。通过模拟分析获得优化后的多孔支架孔径尺寸,获得了更适于人体骨骼缺损部位承重的多孔支架,可对后续研究进行指导。实验研究发现300μm孔径支架强度和弹性模量都高于天然骨,而成形多孔结构的金属件保证了骨骼修复体的生物力学性能,具有良好的力学性能。

    Abstract:

    Metal 3D printing technology has become one of the most potential and promising industrial manufacturing technologies. Through laser selective sintering (SLS) technology, reasonable sintering parameters are selected to sinter metal powder. Complex three-dimensional models of porous scaffolds with different pore sizes were established, and porous scaffold stress and strain distribution were simulated by using finite element analysis. The optimized three-dimensional model of porous scaffolds was obtained. The theoretical basis for subsequent experimental analysis was established. Then 316L stainless steel porous scaffolds were prepared by SLS technology. The porous scaffolds were tested by post-heat treatment, compression and metallographic experiments. The mechanical properties, hardness tests and surface microstructures of the specimens were analyzed. Through the simulation analysis, the optimized pore size of the porous scaffold was obtained, and a porous scaffold which is more suitable for the weight bearing of the human bone defect site was obtained, which can guide the subsequent research. It was found that the strength and modulus of elasticity of 300μm porous scaffolds were higher than those of natural bone. Metal parts with porous structure ensured the biomechanical properties of bone prostheses and had good mechanical properties.

    参考文献
    相似文献
    引证文献
引用本文

徐淑波,孟子翔,刘鹏,任国成,景财年.激光选区融化成形多孔硬骨支架的建模、仿真及实验研究[J].稀有金属材料与工程,2020,49(8):2786~2790.[Xu Shubo, Meng Zixiang, Liu Peng, Ren Guocheng, Jing Cainian. Modeling, simulation and experimental study of porous bone scaffold by using Selective laser melting[J]. Rare Metal Materials and Engineering,2020,49(8):2786~2790.]
DOI:10.12442/j. issn.1002-185X.20190575

复制
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2019-07-09
  • 最后修改日期:2019-09-04
  • 录用日期:2019-09-06
  • 在线发布日期: 2020-09-27
  • 出版日期: