A simulation study on the differences in compressive mechanical properties of Voronoi porous structures with two strut-diameter morphologies_Journal of Biomedical Engineering

Authors：

 MEN Yutao ^1,2 , WANG Tonghao ^1,2 , WU Miaojie ^1,2 , ZHANG Chunqiu ^1,2

1. Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control, School of Mechanical Engineering, Tianjin University of Technology, Tianjin 300384, P. R. China;
2. National Demonstration Center for Experimental Mechanical and Electrical Engineering Education, Tianjin University of Technology, Tianjin 300384, P. R. China;

Corresponding?author：

MEN Yutao, Email: yutaomen@163.com

Keywords：

Voronoi porous structure; Strut-diameter morphology; Compressive mechanical property; Compressive fatigue; Finite element simulation

DOI：

10.7507/1001-5515.202601066

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Voronoi-based non-periodic porous structures resemble trabecular bone and are widely used in bone scaffold design. To clarify the influence of strut-diameter morphology on compressive mechanical properties, two Voronoi porous structures with identical porosity, namely uniform-strut and non-uniform-strut structures, were constructed. Their quasi-static compressive and compressive-fatigue behaviors were analyzed using the finite element method. The results showed that the uniform-strut structure had a more homogeneous stress distribution and higher stiffness in the linear elastic stage. The non-uniform-strut structure exhibited higher load-bearing capacity and energy absorption during compression failure. Under compressive fatigue loading, the uniform-strut structure generally showed a longer fatigue life. The uniform-strut structure is suitable for implant scaffolds and prostheses under the conditions of long-term cyclic loading and controllable mechanical matching; the non-uniform filament diameter structure is more suitable for applications under the conditions of impact resistance and energy absorption buffering. These results provide a reference for the selection and optimization of Voronoi biomimetic porous structures under different service requirements.

Citation： MEN Yutao, WANG Tonghao, WU Miaojie, ZHANG Chunqiu. A simulation study on the differences in compressive mechanical properties of Voronoi porous structures with two strut-diameter morphologies. Journal of Biomedical Engineering, 2026, 43(4): 791-799. doi: 10.7507/1001-5515.202601066 Copy

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Journal of Biomedical Engineering

A simulation study on the differences in compressive mechanical properties of Voronoi porous structures with two strut-diameter morphologies

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