Novel tubular auxetic metamaterial for energy absorption applications
Topic(s) : Material science
Co-authors :
Ibrahim H. ZAINELABDEEN (UNITED ARAB EMIRATES), Rehan UMER , Wesley CANTWELL (UNITED ARAB EMIRATES), Kamran A. KHAN (UNITED ARAB EMIRATES)Abstract :
Recent years have seen a surge in interest within engineering circles towards auxetic structures, driven by their exceptional mechanical properties. These structures, known for their increased resistance to shear and indentation, uniform surface behavior, and enhanced impact resistance and energy absorption capabilities, are particularly relevant in the era of advanced additive manufacturing. Such manufacturing techniques have transformed lattice design, offering new levels of design flexibility. Within this realm, the exploration of auxetic tubular structures has become a focal point for researchers, owing to their unique properties and potential for a wide range of applications. Integrating auxetic characteristics into tubular structures has enhanced their mechanical behavior and overall resilience, resulting in improved structural performance.
The applications of auxetic tubular structures span various industries, offering transformative potential. In aerospace, they promise lighter, more resilient components. In civil engineering, they could lead to more robust, more impact-resistant building materials. Additionally, their unique properties are invaluable in biomedical engineering for advanced prosthetics and protective gear manufacturing, where enhanced energy absorption is crucial. Furthermore, These structures hold promise in automotive engineering, where their improved energy absorption could revolutionize safety standards and vehicle design.
This study presents an innovative approach focusing on a tubular re-entrant honeycomb structure, which is precisely fabricated using fused deposition modeling (FDM). This method, a cornerstone of modern additive manufacturing, allows for thoroughly constructing complex geometric structures. The research involved conducting compression tests on this novel structure to assess and compare its mechanical properties with those of a conventional auxetic structure of similar volume and density. Although the study revealed no significant improvement or degradation in properties such as Young’s modulus and yield strength, a remarkable finding was the considerable enhancement in specific energy absorption. The novel structure exhibited an increase of over 85% in this parameter, underscoring the potential of auxetic tubular designs in applications where energy absorption is critical. This highlights the successful integration of auxetic properties into tubular structures, maintaining vital mechanical properties and significantly improving energy absorption capabilities.
The applications of auxetic tubular structures span various industries, offering transformative potential. In aerospace, they promise lighter, more resilient components. In civil engineering, they could lead to more robust, more impact-resistant building materials. Additionally, their unique properties are invaluable in biomedical engineering for advanced prosthetics and protective gear manufacturing, where enhanced energy absorption is crucial. Furthermore, These structures hold promise in automotive engineering, where their improved energy absorption could revolutionize safety standards and vehicle design.
This study presents an innovative approach focusing on a tubular re-entrant honeycomb structure, which is precisely fabricated using fused deposition modeling (FDM). This method, a cornerstone of modern additive manufacturing, allows for thoroughly constructing complex geometric structures. The research involved conducting compression tests on this novel structure to assess and compare its mechanical properties with those of a conventional auxetic structure of similar volume and density. Although the study revealed no significant improvement or degradation in properties such as Young’s modulus and yield strength, a remarkable finding was the considerable enhancement in specific energy absorption. The novel structure exhibited an increase of over 85% in this parameter, underscoring the potential of auxetic tubular designs in applications where energy absorption is critical. This highlights the successful integration of auxetic properties into tubular structures, maintaining vital mechanical properties and significantly improving energy absorption capabilities.