Nature has long provided blueprints for efficient and resilient structures, and engineers continue to draw inspiration from these designs to improve modern materials. One such concept, the honeycomb structure, is known for delivering exceptional strength while minimizing weight. Seeking to apply this principle to construction materials, researchers explored how engineered wood beams could be redesigned to achieve better performance with fewer resources, particularly by utilizing smaller and underused trees.
Aadarsha Lamichhane et. al., from Mississippi State University developed a new class of engineered wood beams featuring cellular cores formed from corrugated wood panels. Corrugated panels are sheets shaped into repeated wave-like patterns that increase stiffness without adding much material. Their work, published in the peer-reviewed journal Structures [1], introduces a method to transform wood strands into honeycomb-like internal architectures. Dr. Mohammadabadi said, “This study employed a nature-inspired engineering concept, the honeycomb structure, to develop engineered wood beams with cellular cores.”
Dr. Mohammadabadi’s team fabricated beams by bonding corrugated panels into different internal layouts and sandwiching them between solid wood layers. These configurations were tested under bending conditions and compared with conventional glue-laminated timber beams, commonly known as glulam, which are structural beams made by bonding layers of lumber together. One standout result showed that a specific design achieved noticeably higher stiffness-to-weight ratio, known as specific stiffness, than traditional beams, while maintaining nearly the same strength. Stiffness refers to how much a material resists deflection under a bending load. In practical terms, this means the new beams can carry comparable loads while using less material, offering a more efficient and sustainable structural alternative.
Among different core configurations, the orientation of the internal corrugated panels played a crucial role in performance. Some layouts resulted in lower resistance to bending, while others significantly enhanced stiffness and load-bearing efficiency. Load-bearing refers to the ability of a structure to support weight without failing. One configuration, referred to as CAP-D in the figure above, in which the corrugation is aligned with the depth of the beam, delivered the best balance between strength and lightweight properties. These findings demonstrate that internal geometry—not just the raw material—can strongly influence how a structure responds to applied forces.
Dr. Mohammadabadi’s study also explored how these beams behave under stress and how they ultimately fail. Stress is the internal force distributed within a material when an external load is applied. Traditional solid wood beams with small span-to-depth ratios tend to fail due to shear weaknesses, which occur when layers within a material slide past each other. In contrast, the newly designed cellular beams exhibited different failure patterns, including localized crushing within the internal core. This indicates that the honeycomb-like architecture redistributes forces in a unique way, potentially improving structural resilience, meaning the ability to withstand and recover from loads, and offering new design opportunities for safer construction systems. To address the observed crushing failure within the core and improve load-carrying capacity, the research team adopted an alternative design strategy, with further details reported in a related paper published in the same journal, Structures [2].
To better understand and predict performance, the researchers complemented experimental testing with computational modeling. Computational modeling uses computer simulations to predict how structures behave under different conditions. These simulations closely matched the observed behavior of the beams, confirming that such innovative structures can be accurately analyzed and optimized using modern engineering tools. Lamichhane noted, “The experimental results showed that high-performance beams with cellular cores can be developed using corrugated panels, with one cellular beam achieving a specific bending stiffness notably greater than that of glulam beams.” He further employed the simulation framework to design an improved corrugated panel configuration to enhance the overall structural performance of cellular beams. The findings of this design study have also been published in the peer-reviewed journal, Discover Civil Engineering [3].
Beyond performance, the approach also highlights sustainability benefits. By using wood strands derived from small-diameter trees—often considered underutilized resources—the method supports more efficient use of forest materials. The reduction in overall weight can also lower transportation demands and structural loads, contributing to more environmentally conscious construction practices.
Overall, this research demonstrates that engineered wood beams with honeycomb-inspired cores can rival, and in some aspects surpass, traditional timber solutions. By combining natural design principles with advanced fabrication techniques, the study opens new pathways for lightweight, high-performance, and resource-efficient building materials. These innovations could play a significant role in future construction, particularly in applications where reducing weight while maintaining strength is essential.
Journal Reference
1. Lamichhane A., Pradhan S., Belaidi D., Mohammadabadi M. “Engineered wood cellular beams: Influence of corrugated panels layout on structural performance.” Structures, 2025. DOI: https://doi.org/10.1016/j.istruc.2025.108460
2. Lamichhane, A., Kuttoor Vasudevan, A., & Mohammadabadi, M. “Enhancing bending performance of engineered wood cellular beams: Insights from compressive strength.” Structures, 2025. DOI: https://doi.org/10.1016/j.istruc.2025.110564
3. Lamichhane, A., Kuttoor Vasudevan, A., & Mohammadabadi, M. “Effect of Corrugated Panel Geometry on the Bending Stiffness of Engineered Cellular Timber Beams.” Discover Civil Engineering, 2026. DOI: https://doi.org/10.1007/s44290-026-00427-9
