Modelling of stress-strain state of samples with octagonal structure manufactured with the 3D-printing technology

BACKGROUND: Currently, agricultural equipment faces the challenges of increased wear and tear and limited availability of conventional materials. To replace standard components, innovative solutions are required to improve the mechanical properties of parts while maintaining or reducing their mass. The use of metamaterials created using 3D printing technologies opens up new opportunities for the production of parts with adjustable internal structure, which helps to improve the durability and performance of machines.

AIM: Analysis of the influence of the octagonal correct and incorrect geometric configuration of metamaterials on their mechanical properties in order to develop the application of these materials for agricultural machinery parts that provide increased strength and resistance to deformation.

METHODS: The study was based on numerical modelling using computer-aided design and engineering system. The objects of the study were metamaterials with various configurations of octagonal cells differing in shape, size, number and orientation. A comparative analysis of regular and irregular octagonal structures was carried out as part of the experiment.

RESULTS: The analysis showed that the geometrical structure of metamaterials has a significant influence on their mechanical performance. Regular octagonal structures showed increased stiffness and resistance to deformation, whereas irregular structures were characterized by greater plasticity. Optimization of the internal structure of the materials improved the mechanical properties without significantly increasing the mass of the parts.

CONCLUSION: The study confirmed the feasibility of using 3D printing to create metamaterials with improved mechanical properties by changing the geometric structure. The developed materials can replace conventional counterparts in agricultural machines, ensuring their durability and performance.