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Architected lattice structures for multifunctional performance
Architected lattice structures for multifunctional performance
Architected lattice structures offer a powerful platform for integrating multiple functionalities within a single structural system. By tailoring geometry, topology, and material distribution, such lattices can be designed to simultaneously control wave propagation while providing load-bearing capacity and energy absorption. Our research in this area focuses on understanding and exploiting the coupling between mechanical, acoustic, and dissipative mechanisms in lattice architectures, enabling the rational design of multifunctional structures. To date, our work has focused on the sound-absorption properties of lattice structures based on triply periodic minimal surfaces (TPMS). Building on this foundation, we will further extend these concepts toward broader multifunctional designs.
Related publications
X. Guan, J.L. Herder, & J. Yang, "Broadband sound absorption in optimally graded triply periodic minimal surface structures," under review (2026).
X. Guan et al., "Optimization of graded porous acoustic absorbers based on triply periodic minimal surfaces," Materials & Design 253, 113852 (2025).
X. Guan et al., "Computational characterization of functionally graded porous absorbers based on triply periodic minimal surfaces (TPMS)," Proceedings of the 10th Convention of the European Acoustics Association (Forum Acusticum 2023), Turin, Italy, September 2023.
Acoustic metamaterials to overcome intrinsic functional limitations imposed by geometric size
Acoustic metamaterials to overcome intrinsic functional limitations imposed by geometric size
A recurring challenge in acoustic design is the strong coupling between performance and geometric size, particularly at low frequencies where conventional solutions require prohibitively large thickness or footprint. Our research addresses this limitation by exploiting metamaterial concepts that enable subwavelength control of sound through engineered dispersion, slow-wave effects, and tailored diffraction mechanisms. In a series of studies on metaporous layers and slow-wave metamaterial panels, we demonstrated how carefully designed internal architectures can decouple acoustic functionality from physical thickness, enabling broadband absorption and transmission loss in compact configurations. More recently, this approach has been extended to larger-scale applications such as metamaterial noise barriers, where diffraction is harnessed rather than suppressed to achieve enhanced sound attenuation without increasing structural size.
Related publications
J. Yang & P.-S. Ma, "Harnessing diffraction with metamaterial noise barriers for enhanced sound attenuation," Materials Horizons (2026).
J. Yang et al., "Slow-wave metamaterial open panels for efficient reduction of low-frequency sound transmission," Applied Physics Letters 112(9), 091901 (2018).
J. Yang, J.S. Lee, & Y.Y. Kim, "Multiple slow waves in metaporous layers for broadband sound absorption," Journal of Physics D: Applied Physics 50, 015301 (2017).
J. Yang, J.S. Lee, & Y.Y. Kim, "Metaporous layer to overcome the thickness constraint for broadband sound absorption," Journal of Applied Physics 117, 174903 (2015).
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