In a groundbreaking study recently published in ‘Composites Part C: Open Access’, researchers have delved into the energy absorption capabilities of innovative honeycomb structures utilizing Lozenge grid unit cells. Led by Hussain Gharehbaghi from the Department of Mechanical Engineering at Tarbiat Modares University in Tehran, Iran, the investigation combines experimental and numerical analyses to uncover the potential of these structures in various applications, particularly within the construction sector.
The research reveals that honeycomb structures made from continuous glass fiber-reinforced polylactic acid (PLA) exhibit significant variations in energy absorption based on their orientation during loading. “Our findings indicate that the highest energy absorption occurs at angles of 0° and 90°,” Gharehbaghi explains. “This knowledge can be pivotal for engineers looking to enhance the safety and durability of lightweight structures in construction.”
Additively manufactured using fused filament fabrication, the Lozenge grid specimens were subjected to a series of tests, including a heat treatment process at 70 °C. This treatment aimed to assess its influence on energy absorption capacity. The results showed a promising correlation between numerical simulations and experimental data, reinforcing the reliability of the findings. Notably, the study found that structures oriented at 45° displayed the least energy absorption, highlighting the importance of angle selection in design.
The implications of this research are substantial for the construction industry, where lightweight and energy-efficient materials are increasingly in demand. As the sector moves toward sustainability, the use of composite materials like PLA not only reduces the overall weight of structures but also enhances their resilience against impacts. Gharehbaghi emphasizes, “Understanding the damage tolerance of Lozenge lattices allows us to innovate further in creating reliable and efficient building materials.”
This study opens the door for future advancements in structural design, particularly in areas where weight reduction and energy absorption are critical. As construction projects evolve, integrating such innovative materials could lead to safer, more sustainable buildings that withstand environmental challenges.
For those interested in exploring the detailed findings, the research is available in ‘Composites Part C: Open Access’, which translates to “Compuestos Parte C: Acceso Abierto”. More information about Gharehbaghi’s work can be found at lead_author_affiliation.
