Research on the energy absorption performance of diamond structures with axial and transverse porosity gradients under different load-bearing angles
- 1Department of Orthopedics, Dalian Municipal Central Hospital Affiliated to Dalian University of Technology, Dalian, China
- 2DUT-BSU Joint Institute, Dalian University of Technology, Dalian, China
- 3School of Mechanics and Aerospace Engineering, Dalian University of Technology, Dalian, China
Abstract
BackgroundIn biomedical, aerospace, automotive and marine engineering, there is an increasing demand for high energy absorption behaviour in structures. Triply periodic minimal surface (TPMS) structures, such as Diamond lattices, have emerged as promising solutions due to their light weight nature and excellent energy absorption performance, and thus they have attracted significant research interest.MethodsThis study explores the energy absorption characteristics and deformation behavior of Diamond structures with varying porosity distributions under different loading angles. Uniform and gradient Diamond structures with axial and transverse porosity distributions were generated. Quasi-static compression tests were performed on the uniform structures, while FE simulations were used to investigate the mechanical and energy-absorption responses of the uniform and gradient configurations. Quasi-static compression tests and finite element (FE) simulations were used to analyze the changes in energy absorption characteristics and deformation/damage modes during the compression process.ResultsThe results show that loading orientation and porosity-gradient direction strongly influence the energy-absorption response of Diamond structures. For the uniform structure, the SEA increased to approximately 8 kJ/kg at a loading angle of 30°, representing an increase of about 33% compared with the 0° and 15° configurations, while the corresponding plateau stress reached approximately 105 MPa. When the loading angle increased to 45°, the SEA decreased to approximately 4 kJ/kg because of earlier densification. Axial-gradient structures exhibited increased plateau stress and slightly enhanced SEA, but their maximum energy-absorption efficiency remained below approximately 35%, compared with about 40% for the uniform structures. Transverse-gradient structures showed plateau stresses comparable to those of the uniform structure with the corresponding average porosity, but tended to densify earlier, resulting in reduced SEA.ConclusionThese findings provide valuable insights into the design and optimization of Diamond structures for improved energy-absorption performance under different loading conditions and offer mechanical design guidance that may be relevant to the future development of TPMS structures for biomedical applications.
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BibTeX
@article{wang2026research,
title = {{Research on the energy absorption performance of diamond structures with axial and transverse porosity gradients under different load-bearing angles}},
author = {Zhenjia Wang and Zhenjia Wang and Anas Hassan and Anas Hassan and Xuzhe Qiu and Yunfei Lan and Yongtao Lyu and Yongtao Lyu and Yongtao Lyu and Yadong Liu},
journal = {Frontiers in Bioengineering and Biotechnology},
year = {2026},
month = oct,
doi = {10.3389/fbioe.2026.1947630},
url = {https://doi.org/10.3389/fbioe.2026.1947630},
note = {CC BY},
}
RIS
TY - JOUR
TI - Research on the energy absorption performance of diamond structures with axial and transverse porosity gradients under different load-bearing angles
AU - Zhenjia Wang
AU - Zhenjia Wang
AU - Anas Hassan
AU - Anas Hassan
AU - Xuzhe Qiu
AU - Yunfei Lan
AU - Yongtao Lyu
AU - Yongtao Lyu
AU - Yongtao Lyu
AU - Yadong Liu
PY - 2026
DA - 2026/10/28
JO - Frontiers in Bioengineering and Biotechnology
DO - 10.3389/fbioe.2026.1947630
UR - https://doi.org/10.3389/fbioe.2026.1947630
AB - BackgroundIn biomedical, aerospace, automotive and marine engineering, there is an increasing demand for high energy absorption behaviour in structures. Triply periodic minimal surface (TPMS) structures, such as Diamond lattices, have emerged as promising solutions due to their light weight nature and excellent energy absorption performance, and thus they have attracted significant research interest.MethodsThis study explores the energy absorption characteristics and deformation behavior of Diamond structures with varying porosity distributions under different loading angles. Uniform and gradient Diamond structures with axial and transverse porosity distributions were generated. Quasi-static compression tests were performed on the uniform structures, while FE simulations were used to investigate the mechanical and energy-absorption responses of the uniform and gradient configurations. Quasi-static compression tests and finite element (FE) simulations were used to analyze the changes in energy absorption characteristics and deformation/damage modes during the compression process.ResultsThe results show that loading orientation and porosity-gradient direction strongly influence the energy-absorption response of Diamond structures. For the uniform structure, the SEA increased to approximately 8 kJ/kg at a loading angle of 30°, representing an increase of about 33% compared with the 0° and 15° configurations, while the corresponding plateau stress reached approximately 105 MPa. When the loading angle increased to 45°, the SEA decreased to approximately 4 kJ/kg because of earlier densification. Axial-gradient structures exhibited increased plateau stress and slightly enhanced SEA, but their maximum energy-absorption efficiency remained below approximately 35%, compared with about 40% for the uniform structures. Transverse-gradient structures showed plateau stresses comparable to those of the uniform structure with the corresponding average porosity, but tended to densify earlier, resulting in reduced SEA.ConclusionThese findings provide valuable insights into the design and optimization of Diamond structures for improved energy-absorption performance under different loading conditions and offer mechanical design guidance that may be relevant to the future development of TPMS structures for biomedical applications.
SN - 2296-4185
ER -