Article
Engineering, Mechanical
Marianna Diamantopoulou, Christian C. Roth, Thomas Tancogne-Dejean, Carmen M. Lauener, Dirk Mohr
Summary: The triply periodic minimal surface design is used to investigate lattices with sandwich cell walls. The specific energy absorption of sandwich TPMS lattices is found to be higher compared to monolithic polymer or alumina lattices of equal density. The study provides design guidelines for fulfilling application-related requirements.
EXTREME MECHANICS LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Dingchang Zhang, Christoph Kenel, David C. Dunand
Summary: Microlattices with orthogonal 0-90 degrees architecture are 3D-extrusion printed and synthesized into equiatomic CoCrCuFeNi microlattices through H 2 -reduction and interdiffusion processes. Liquid-sintered microlattices show higher compressive strength and ductility, suitable for complex load-bearing applications.
Article
Engineering, Manufacturing
Mohammad Sadeq Saleh, Chunshan Hu, Jacob Brenneman, Al Muntasar Al Mutairi, Rahul Panat
Summary: This study used Aerosol Jet 3D nanoparticle printing to fabricate three-dimensional metallic microlattice materials and demonstrated that the mechanical response of these microlattices can be tuned by adjusting the structure density and cell architecture. Finite Element Analysis and a theoretical model were employed to show the periodic hardening and softening behavior of the microlattice structures in the stress-strain plots' plateau region. These results establish the potential of AJ printing for fabricating a novel class of microlattice structures with tunable and controlled mechanical response.
ADDITIVE MANUFACTURING
(2021)
Article
Polymer Science
Weidong Chen, Chengjie Guo, Xiubin Zuo, Jian Zhao, Yang Peng, Yixiao Wang
Summary: This investigation focuses on studying the impact of temperature and damage constitutive model on the energy absorption performance of polymeric origami tubes under quasi-static conditions. The study includes experimental characterization of the mechanical properties of 3D-printed polylactic acid (PLA) samples at different temperatures and numerical simulations to analyze the influence of temperature on axial compression behavior.
Article
Chemistry, Multidisciplinary
Akira Kudo, Kazuya Kanamaru, Jiuhui Han, Rui Tang, Kazuaki Kisu, Takeharu Yoshii, Shin-ichi Orimo, Hirotomo Nishihara, Mingwei Chen
Summary: This study reports the fabrication of hierarchically porous carbon microlattices (HPCMLs) using composite photoresin and stereolithography (SLA) 3D printing. The carbon microlattices have a hierarchical pore structure, including lattice architecture, macropores, mesopores, and micropores. The HPCMLs exhibit excellent mechanical properties and can be used as thick supercapacitor electrodes with high gravimetric and areal capacitances.
Article
Chemistry, Multidisciplinary
Xinwei Li, Xiang Yu, Wei Zhai
Summary: Micro-lattice metamaterials have attracted increasing research interest as sound absorbers due to their lightweight nature and high design freedom. However, the current micro-lattices are limited to one sound dissipation mechanism, which hinders their broadband absorption capabilities. In this study, a dissipation mechanism is introduced by hollowing out the struts of the micro-lattice, resulting in a new hollow-truss metamaterial (HTM) that harnesses dual concurrent dissipation mechanisms from its complex truss interconnectivity and hollow interior. Experimental measurements show that HTMs exhibit superior and customizable absorption properties compared to their solid-truss counterparts. An optimal HTM achieves a high average broadband coefficient of 0.72 at a thickness of only 24 mm. The study also proposes a dissipation theorem based on the superimposed acoustic impedance of the outer-solid and inner-hollow phases in the HTM. Mechanical property studies reveal improved compressive toughness in the HTMs. This work highlights the potential of hollow-trusses in achieving dissipative mechanisms and excellent acoustic properties.
Article
Instruments & Instrumentation
Luonan Zhou, Xiaoyang Zheng, Kai Du, Xiaofeng Guo, Qiang Yin, Ai Lu, Yong Yi
Summary: Auxetic lattices with negative Poisson's ratio are seen as potential candidates for sensors, actuators, and optics due to their unique mechanical responses. By designing four types of auxetic lattices based on hollow shell cuboctahedron assembly, experiments and finite element simulations were used to investigate their behavior under uniaxial compression. The results showed that these lattices exhibit buckling with negative Poisson's ratio over a range of volume fractions, and demonstrate high reversibility in compressive loadings, providing insight into energy absorption applications such as body protection equipment and smart packaging materials.
SMART MATERIALS AND STRUCTURES
(2021)
Article
Polymer Science
Xiubin Zuo, Chengjie Guo, Weidong Chen, Yixiao Wang, Jian Zhao, Huanlin Lv
Summary: In this study, fused filament fabrication (FFF) 3D printing was used to fabricate origami-ending tubes (OET) and investigate the influence of loading rate and temperature on their energy absorption capacity. Experimental and numerical simulation results showed that different constitutive models were needed for capturing the true stress-strain behavior of the material at different temperatures. A damage model was established to predict the collapse and damage behavior of the tubes under different loading rates. The study analyzed the impact of loading rate and temperature on the crashworthiness performance of the OET tubes.
Article
Computer Science, Interdisciplinary Applications
Abdalsalam Fadeel, Hasanain Abdulhadi, Golam Newaz, Raghavan Srinivasan, Ahsan Mian
Summary: Sandwich structures are widely used due to their light weight, high specific strength, and high specific energy absorption. Finite element analysis (FEA) can be used to predict the mechanical behavior of lattice cell structures (LCSs) more economically. However, there are limitations in current FEA models for predicting post-yielding stages of 3D-printed LCSs. This study focuses on developing FEA models to accurately capture the post-yielding compressive behavior of different LCSs and comparing the results with experimental observations.
JOURNAL OF COMPUTATIONAL DESIGN AND ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Johannes Schneider, S. Kumar
Summary: Additively manufactured mechanical metamaterials are being used in light-weight energy-absorption applications due to their exceptional properties. This study examines the energy absorption characteristics of different micro-architected lattice structures and compares their performance. The Gyroid lattice structure shows the highest energy absorption efficiency and is considered a promising candidate for lightweight energy-absorbing applications.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Ceramics
L. Moreno-Sanabria, R. Barea, M. I. Osendi, M. Belmonte, P. Miranzo
Summary: In this study, finite element methods (FEM) were used to simulate the transient plane source test in 3D logpile lattices to evaluate the effect of interfacial thermal contact resistances on thermal conductivity (kappa) measurement. The influence of different geometrical parameters and the kappa of the strut material on the anisotropic thermal conductivity of 3D lattices were also investigated. The models were validated using experimental data and reported data for similar scaffolds, showing their significance for applications in energy production and storage, catalysis, and heat transfer-related fields.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Xinwei Li, Xiang Yu, Wei Zhai
Summary: This study develops a novel microlattice-based sound absorber by combining traditional concepts with additive manufacturing, which shows excellent absorption properties and impact resistance. The microlattice material has multiple absorption mechanisms, a broad frequency range, and high deformation recovery capability.
ADVANCED MATERIALS
(2021)
Article
Engineering, Manufacturing
Chiara Zarna, Gary Chinga-Carrasco, Andreas T. Echtermeyer
Summary: The major advantage of cellular structures is the saving of material, energy, cost, and weight. Biocomposites are strong, lightweight materials and offer a high degree of design freedom. This study characterized and compared the bending properties of different cellular structures for use in wood fiber/PLA biocomposite panels.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Materials Science, Multidisciplinary
Ryan Nam, Michael Jakubinek, Hamed Niknam, Meysam Rahmat, Behnam Ashrafi, Hani E. Naguib
Summary: Tunable energy absorption achieved through grading of lattice structures has high potential for lightweight cellular cores in energy absorbing structures. This study investigates structurally graded and multi-material lattices consisting of plate-based octet unit cells, showing a near 10% increase in specific energy absorption in the plate thickness graded designs compared to baseline octet lattices. Finite element models were developed and showed good agreement with experimental results. The results demonstrate the capacity to adapt the octet lattice structure design through additive manufacturing to better suit the expected load and application.
MATERIALS & DESIGN
(2023)
Article
Chemistry, Multidisciplinary
Xinwei Li, Xiang Yu, Miao Zhao, Zhendong Li, Zhonggang Wang, Wei Zhai
Summary: This study presents the design of a high-strength microlattice material with sound-absorbing and deformation-tolerant properties through modifying state-of-the-art bioinspired structures. By introducing dissipative pores and geometrical heterogeneities, the material exhibits enhanced sound absorption performance. The optimized microlattice achieves a high absorption coefficient across a broad frequency range with a low thickness, and it also demonstrates improved deformation tolerance and energy absorption capacity.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Construction & Building Technology
Xiaomeng Jin, Hongbin Fang, Xiang Yu, Jian Xu, Li Cheng
Summary: In this paper, a novel modular-origami-based reconfigurable silencing window is proposed to achieve balanced noise reduction and ventilation. The design allows for on-demand sound attenuation for a specific target frequency band and can achieve broadband noise reduction through cascading multiple origami layers. Numerical simulations demonstrate that balanced sound attenuation and air ventilation can be achieved by simply folding the origami window.
BUILDING AND ENVIRONMENT
(2023)
Article
Mechanics
Jun Wei Chua, Xinwei Li, Xiang Yu, Wei Zhai
Summary: The advent of additive manufacturing has advanced research on lattice structures for sound absorption. In this work, thin parallel plates resembling sonic black holes were incorporated into truss lattices to create a novel class of slow-sound lattice absorbers. The addition of these plates significantly improved the sound absorption coefficients in a broadband frequency range.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Multidisciplinary
Yijing Zhao, Jun Wei Chua, Yani Zhang, Wei Zhai
Summary: Fe-doped and SiC nanoparticle-loaded carbon fibrous membranes and their multiscale composites were developed for effective absorption of broadband electromagnetic waves and acoustic waves. The incorporation of nanoparticles and the design of multilayer structures allow for excellent absorption performance.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Engineering, Manufacturing
Miao Zhao, Xinwei Li, David Z. Zhang, Wei Zhai
Summary: Inspired by bamboo, a novel bamboo-inspired body-centered cubic (B-BCC) lattice structure composed of tapered and hollow struts is proposed. The mechanical properties and deformation behaviors of the lattice structures are thoroughly evaluated, and it is found that the geometric parameters have a significant influence on the deformation behavior under uniaxial compression. An optimization method combining artificial neural network and elastic isotropy is proposed to obtain isotropic B-BCC lattice structures with superior elastic modulus. The optimization results show a significant increase in elastic modulus compared to the original lattice structures.
ADDITIVE MANUFACTURING
(2023)
Article
Engineering, Manufacturing
Zhendong Li, Xinwei Li, Jun Wei Chua, Chong Heng Lim, Xiang Yu, Zhonggang Wang, Wei Zhai
Summary: This study proposes a novel multifunctional microlattice metamaterial based on a hollow truss-plate hybrid design, which is realized by digital light processing 3D printing. Experimental results show that this material exhibits excellent sound absorption and mechanical properties, achieving quasi-perfect sound absorption and broadband half-absorption. The sound-absorbing capacity relies on the designed cascaded Helmholtz-like resonators, and the physical mechanisms behind the absorptive behaviors are revealed through numerical analyses. Additionally, this material displays superior modulus and strength compared to conventional cellular materials and modified microlattices, attributed to the near-membrane stress state of the plate architecture and the mechanically robust behavior of the hollow struts. This work presents an effective approach for designing and engineering multifunctional metamaterials through 3D printing.
VIRTUAL AND PHYSICAL PROTOTYPING
(2023)
Article
Mechanics
Xiaosong Zhu, Xiang Yu, Yongzhen Mi, Hui Zheng
Summary: This paper investigates the bandgap properties and wave attenuation mechanisms of periodic beams embedded with a combination of acoustic black holes (ABHs) and local resonators (LRs). The stiffness ratio between the resonators and the host beam plays an important role in forming new bandgaps.
INTERNATIONAL JOURNAL OF APPLIED MECHANICS
(2023)
Article
Materials Science, Multidisciplinary
Tong Yu, Xinwei Li, Miao Zhao, Xiao Guo, Junhao Ding, Shuo Qu, Thomas Wei Jie Kwok, Tao Li, Xu Song, Beng Wah Chua
Summary: In this study, we propose a novel class of crystal structure mimicking truss and plate hybrid lattice structures as isotropic lightweight structural and energy-absorbing material. Our design is experimentally validated using samples fabricated via micro-selective laser melting using 316L stainless steel as the base material. Compression tests reveal excellent elastic isotropy and high strength and energy absorption properties.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Engineering, Environmental
Likai Yang, Jun Wei Chua, Xinwei Li, Yijing Zhao, Ba Quoc Thai, Xiang Yu, Yong Yang, Wei Zhai
Summary: In this study, hierarchically porous ultralight graphene oxide (GO) aerogels were fabricated through a novel emulsion freeze-casting process. The aerogel with a surfactant-to-GO weight ratio of 1:1 showed an average absorption coefficient of up to 0.86 at a broadband frequency range between 250 Hz and 6300 Hz, a significant improvement compared to conventional GO aerogels. Numerical microstructural models identified the increased air-wetting area in the hierarchical microstructure as the reason behind the enhanced sound absorption. Overall, this research demonstrates the potential of utilizing material-process-structure relationships in GO aerogel production for advanced sound-absorbing materials.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Acoustics
Sihui Li, Jiajun Xia, Xiang Yu, Xiaoqi Zhang, Li Cheng
Summary: This study examines a Sonic Black Hole with a perforated boundary (SBH-PB), which utilizes perforated acoustic boundaries to enhance SBH effects for wave energy focalization and broadband sound absorption. The adoption of the perforated boundary brings about three benefits: increased accuracy of the modeling, enhanced sound absorption, and realization of SBH effects with fewer inner rings. The proposed structure holds promises for sound wave manipulation and development of acoustic noise control devices.
JOURNAL OF SOUND AND VIBRATION
(2023)
Article
Materials Science, Multidisciplinary
Xinwei Li, Miao Zhao, Xiang Yu, Jun Wei Chua, Yong Yang, Kian Meng Lim, Wei Zhai
Summary: This paper introduces a novel concept of using lattice structures as ventilated sound-insulating structural materials. By focusing on specific geometric factors, the lattice structures can achieve different elastic properties and have high ventilation performance. Numerical simulations and discretized lattice microstructures are used to propose an analytical model for predicting and designing the transmission properties of lattices.
MATERIALS & DESIGN
(2023)
Article
Engineering, Civil
Chenyang Xi, Hui Zheng, Yongzhen Mi, Xiang Yu
Summary: This paper proposes a lever-type inertial amplification (LIA) metastructure to enhance the vibration reduction capability of thin plates in the low-frequency range. Numerical results show that the proposed LIA plates generate wider and deeper complete bandgaps at the same target frequency compared to LR plates. The vibration reduction performance of the LIA plate presents unique direction-dependent characteristics.
THIN-WALLED STRUCTURES
(2023)
Article
Acoustics
Yingxin Zhang, Yao Wei Chin, Xiang Yu, Milan Shrestha, Gih-Keong Lau, Boo Cheong Koo, Kun Liu, Zhenbo Lu
Summary: A ventilated acoustic metasurface, composed of a membrane with different depth sub-chambers, is proposed. It can provide a sound insulation performance of at least 5 dB in a wide frequency range from 100 to 1700 Hz. Furthermore, it achieves a noise reduction of 10 dB in the low-frequency range of 100 to 200 Hz and from 437.4 to 1700 Hz, effectively covering the low-frequency environmental noise. The study also explores the physical mechanism of membrane-acoustic coupling for noise reduction in the low-frequency range.
JASA EXPRESS LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Xinwei Li, Xiang Yu, Jun Wei Chua, Wei Zhai
Summary: Helmholtz resonance, a primary sound absorption mechanism, can be enhanced by reshaping the cavity without altering its mass and volume. By bringing the cavity walls close to the pores, additional thermoviscous dissipation occurs, resulting in a 44% gain in maximum absorption compared to the original structure. Numerical simulations elucidate structure-property relationships and propose analytical models for design and optimization. A heterogeneously porous broadband absorber with an average absorption coefficient of 0.74 is demonstrated, showcasing the potential of this concept for advanced sound-absorbing metamaterials.
MATERIALS HORIZONS
(2023)
Review
Chemistry, Multidisciplinary
Xinwei Li, Jun Wei Chua, Xiang Yu, Zhendong Li, Miao Zhao, Zhonggang Wang, Wei Zhai
Summary: Noise reduction through absorption is crucial for the well-being of humans and machines. Lattice structures, as advanced sound-absorbing materials, offer immense design freedom and customizable absorption properties. This review provides a comprehensive overview of the current research status and proposes a classification of lattice structures based on their acoustic properties. The acoustical geometries and sound wave dissipation within the lattice are influenced by morphology, relative density, cell size, and number of cells. The structural-property relationships of lattice structures are analyzed, and suggestions for future research directions are proposed.