A 3D origami-inspired programmable metamaterial for wave propagation cloaking
Abstract
The aerospace industry stands at the threshold of a transformative era with the emergence of advanced lightweight, robust, and highly damped multifunctional composites. These materials promise to revolutionize aircraft performance by offering enhanced safety and efficiency. However, traditional approaches to wave propagation control in structures face limitations such as weight penalties, poor thermal properties, and lack of programmability. Our proposed solution involves the development of a novel programmable 3D origami-inspired metamaterial embedded with specially designed multi-resonators. This metamaterial aims to render aircraft structures effectively invisible to mechanical waves by inducing multiple, closely spaced local resonances across three dimensions, thus creating dense, tunable bandgaps that trap waves. Building upon prior research, our approach combines the benefits of programmable foldable origami geometries with the tunability and lightweight attributes of metamaterials. Through strategic stacking of membrane resonators within origami cells, we aim to achieve significant advancements in wave control capabilities. Key innovations include- (i) utilization of origami foldability to precisely control the orientation of resonators and generate adjustable bandgaps along preferential directions; (ii) hybrid additive manufacturing approach combining concurrent 3D printing of origami cells with electrospinning of nanostructured membrane resonators; (iii) incorporation of carbon nanotubes (CNTs) in membrane resonators to adjust storage and loss modulus, crucial for effective wave control. Our project aims to push the boundaries of multiscale modeling techniques by integrating nonlinear models for resonators into 2D models for the 3D origami structure. Additionally, our aim is to integrate these mechanical models into data-driven frameworks by employing physics informed neural networks trained using the rich experimental data obtained through 3D laser scanning vibrometry. In conclusion, our innovative 3D origami-inspired metamaterial holds great potential for advancing aerospace applications, especially in supersonic-transonic aircraft. By facilitating precise control over mechanical wave propagation, these materials have the capability to usher in a new era of enhanced safety and performance, even in the face of extreme scenarios.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Feb 05, 2025
- Source ID
- FA86552417035
Entities
People
- Walter Lacarbonara
Organizations
- Air Force Office of Scientific Research
- Sapienza University of Rome
- United States Air Force