Origami Metamaterials and Kresling Structures: Theoretical and Experimental Insights

This seminar delves into the captivating fusion of ancient origami art with cutting-edge engineering, showcasing how intricate folding techniques are transforming modern technology. The complex Origami folding patterns offer a versatile framework for fine-tuning both static and dynamic mechanical properties in materials and structures. Through this unique blend of art and science, the seminar highlights two advanced experimental setups aimed at investigating Poisson effects in deployable metamaterials and exploring the mechanics of Kresling tubes—renowned for their bistability and energy absorption potential. The first setup investigates Poisson's ratio across various origami configurations, including the traditional Miura-ori, Eggbox, and the newly developed Morph and Trimorph patterns.

Our findings reveal the Morph pattern’s unique ability to reverse Poisson's ratio, seamlessly shifting between positive and negative values through topological transformations. By integrating theoretical models, simulations, and experimental data, we demonstrate the high tunability of Poisson's ratio in origami metamaterials, with consistent results across all approaches. The second setup explores the mechanical behavior of Kresling tubes, composed of even and odd numbers of units with matching or differing chirality. This system features two fixtures that independently control axial displacement (contraction/expansion) and twist, allowing for flexible arrangements within the Kresling array. The insights from this research have broad applications in areas such as soft robotics, mechanical computing, energy absorption, and impact mitigation, opening new possibilities for engineering innovations.