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为生物仿真骨制造的分层梯度罗姆比克十二方体复合结构,通过选择性激光化制造

Yun Zhai¹, Tianyuan Zhong¹, Shuangquan Guo²

¹School of Mechanical Engineering, Dalian Jiaotong University, Dalian 116028, China.

|June 27, 2025

概括

通过选择性激光化 (SLM) 制造的渐变多孔骨板提供了更好的机械性能和骨组织兼容性. 这些梯度结构增强了力传输控制,并模仿了天然的骨结构.

科学领域:

生物材料工程生物材料工程
整形外科植入物整形外科植入物
添加剂制造添加剂制造添加剂制造

背景情况:

毛孔骨植入物对于骨组织再生至关重要.
渐变结构显示了增强骨组织整合的前景.
梯度和均的多孔结构之间存在有限的比较研究.

研究的目的:

使用选择性激光化 (SLM) 制造和分析一个渐变复合材料Ti6Al4V部骨板.
为了研究梯度与均多孔结构的机械性质.
为了比较梯度结构的力传递特性与自然骨.

主要方法:

使用SLM与形十二面体单元细胞制造梯度Ti6Al4V骨板.
使用阿什比·吉布森公式调整毛孔度 (22.02-94.37%) .
通过压缩试验和剪切负荷模拟进行机械性能分析.

主要成果:

弹性模块控制在0.09-5.43GPa之间;最大承压强度为216.1MPa.
梯度结构在剪切负荷下表现出受控的应力分布,具有外部弹性和内部刚性.
与非梯度模型相比,梯度结构在力传输上表现出更好的控制.

结论:

由SLM制造的渐变多孔骨板提供可调节的机械性能,模仿自然骨.
梯度结构比均结构提供了增强的机械性能和更好的力传输控制.
这些发现支持进一步研究骨科应用中各种杆状单元细胞的梯度设计.

关键词:

生物仿真骨头骨头研究梯度有孔的结构结构有孔的结构选择性的激光化.应力屏蔽应力屏蔽压力传递机制压力传递机制

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