Modified Lattice Structure with Close-To-Zero Poisson's Ratio for Enhanced Energy Absorption: A Numerical Study

Lattice structures have garnered significant interest across various sectors due to their unique characteristics, such as a high strength-to-weight ratio and a high damping coefficient. In addition, honeycomb structures necessitate a zero Poisson's ratio to prevent unnecessary stress and strain. To address this issue, a cellular honeycomb core that incorporates in-plane corrugated U-shaped beams with close-to-zero Poisson's ratio was proposed. This research assesses a method to increase the capacity of structure to absorb energy. To achieve this goal, a circular cylinder was utilized to improve the mechanical properties. The compressive characteristics of the modified structure were analyzed and compared to the conventional structure. The objective of this study was to boost the energy absorption capabilities of the conventional structure while maintaining the Poisson's ratio.