Effect of Elementary Unit Configurations on the Mechanical Performance of Periodic Lattice Structures to Architect Porous Scaffolds by FEM-Driven Additive Manufacturing

IF 4 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Metals and Materials International Pub Date : 2025-01-09 DOI:10.1007/s12540-024-01874-8

A. V. Kapustin, M. M. Abramova, N. Yu Anisimova, M. V. Kiselevskiy, N. A. Enikeev

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Abstract

We report on the numerical calculation of mechanical parameters of porous metallic specimens produced of biocompatible Ti alloy by laser powder bed fusion. The porous structures have been composed based on different models as variously designed triply periodic minimized surfaces and strut-based constructions. We have elucidated the effect of the pore size and unit cell geometry on the strength and elastic properties of the lattice structures by finite element simulations of full-scale models of specimens for compression testing. We show how variation in pore size can influence mechanical parameters of Ti porous specimens within a single design as well as how these parameters might depend on the model used. The experimental validation of the numerical results showed a good correlation of trends predicted by simulations showing their ability to virtual designing advanced porous bioactive scaffolds for orthopedic applications. The issues related to improvement of the combination of implant’s desired properties are discussed.

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基于有限元驱动的增材制造技术研究周期点阵结构对多孔支架力学性能的影响

本文报道了激光粉末床熔合法制备生物相容性钛合金多孔金属试样力学参数的数值计算。多孔结构是基于不同的模型组成的，包括不同设计的三周期最小化表面和基于结构的结构。我们通过压缩试验全尺寸模型的有限元模拟，阐明了孔隙大小和单元几何形状对晶格结构强度和弹性性能的影响。我们展示了孔隙大小的变化如何影响单一设计中钛多孔试样的力学参数，以及这些参数如何取决于所使用的模型。数值结果的实验验证表明，模拟预测的趋势具有良好的相关性，表明他们能够虚拟设计用于骨科应用的先进多孔生物活性支架。讨论了提高植入物综合性能的相关问题。图形抽象

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来源期刊

Metals and Materials International 工程技术-材料科学：综合

CiteScore

7.10

自引率

8.60%

发文量

197

审稿时长

3.7 months

期刊介绍： Metals and Materials International publishes original papers and occasional critical reviews on all aspects of research and technology in materials engineering: physical metallurgy, materials science, and processing of metals and other materials. Emphasis is placed on those aspects of the science of materials that are concerned with the relationships among the processing, structure and properties (mechanical, chemical, electrical, electrochemical, magnetic and optical) of materials. Aspects of processing include the melting, casting, and fabrication with the thermodynamics, kinetics and modeling.