Article
Engineering, Mechanical
Justin Warren, Mike Cole, Sean Offenberger, Kalyan Raj Kota, Thomas E. Lacy, Hossein Toghiani, Mark Burchell, Santanu Kundu, Charles U. Pittman
Summary: The study investigated the use of honeycomb core sandwich panels filled with a shear thickening fluid (STF) for spacecraft shielding. Results showed that the STF-filled panels sustained significantly less damage compared to panels filled with a Newtonian fluid (PEG), indicating the potential for STFs to improve impact resistance in a broad range of conditions.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2021)
Article
Materials Science, Composites
Haiying Cao, Wenyi Bao, Cuiping Bai, Qu Yan, Ben Wang, Yunze Yang, Hualin Fan
Summary: This research utilizes the free curling property of the OH with zero Poisson's ratio to design and manufacture curved CFRC sandwich beams. The failure mechanism of these beams is revealed through three-point bending experiments, showing that the shearing fracture of the OH core controls the initial failure of the curved structure. The ultimate bearing capacity and flexural rigidity of the curved beams increase with the curvature, and no debonding is observed in the experiments.
POLYMER COMPOSITES
(2023)
Article
Mechanics
K. Naresh, W. J. Cantwell, K. A. Khan, R. Umer
Summary: This study investigates the possibility of triggering ductile modes of failure in a high-performance sandwich structure by employing a multi-core design with dispersed composite plies. Results show superior mechanical properties were obtained in the shorter span length samples through experimental and theoretical approaches.
COMPOSITE STRUCTURES
(2021)
Article
Construction & Building Technology
Adil Ahmad, Yogendra Singh
Summary: This study experimentally investigated the structural behavior of EPS core RCSP under axial and in-plane shear loading, showing that the shear strength obtained from experiment is higher than that estimated using the design codes.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Civil
Yousef Alqaryouti, Dilum Fernando, Joseph M. Gattas
Summary: This paper investigates the mechanical behavior of folded timber sandwich structures developed using integral rotational press-fit joints. Experimental testing shows failures occurring at joint locations with maximum hogging moment, with bending and tensile as the main failure modes. A nonlinear model and simplified frame model are proposed to predict the FRP fracture modes.
THIN-WALLED STRUCTURES
(2021)
Article
Engineering, Mechanical
Mihaela Iftimiciuc, Arne Derluyn, Jochen Pflug, Dirk Vandepitte
Summary: Honeycomb cores are widely used in various industries to build advanced lightweight structures that take advantage of high stiffness-to-weight and strength-to-weight ratios. This study focuses on the compressive behavior of a novel hierarchical sandwich honeycomb core, both in virtual and experimental testing. The finite element model is validated and can be used for further structural optimization. The comparison between the proposed hierarchical structure and conventional expanded honeycombs highlights the advantages of structural hierarchy, showing a high potential for use in the construction of sandwich panels and parts.
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
(2023)
Article
Mechanics
D. K. Korupolu, P. R. Budarapu, V. R. Vusa, M. K. Pandit, J. N. Reddy
Summary: This study investigates the performance of enhanced hierarchical honeycomb core cellular structures under compression and impact loads by proposing a hierarchical scheme of varying the order and level of the cells. The development of hierarchical patterns enhances the load-bearing capacity and introduces a novel second order second level hexagon based hybrid cell.
COMPOSITE STRUCTURES
(2022)
Article
Polymer Science
Xuecheng Han, Hongneng Cai, Jie Sun, Zhiyuan Wei, Yaping Huang, Ang Wang
Summary: The mechanical response and damage mechanism of an all-composite sandwich structure with honeycomb core under out-of-plane quasi-static compression and impact are studied using numerical methods. The structure shows large structural stiffness and strong energy absorption ability.
Article
Engineering, Mechanical
Jinbo Fan, Penghui Li, Weiqi Guo, Xiuguo Zhao, Chen Su, Xinxi Xu
Summary: The flatwise compression and mechanical response of gradient-tandem Nomex honeycomb sandwich panels were investigated. Finite element models were used to evaluate the effects of layer sequences, separator materials, and layer heights on the mechanical properties. The research results show that selecting appropriate separator materials and assembly sequences can improve the response curves and reduce peak stresses of the sandwich panels.
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
(2023)
Article
Mechanics
K. Avramov, B. Uspensky
Summary: This paper numerically analyzes the geometrically nonlinear forced vibrations of doubly curved sandwich shells with honeycomb core, manufactured using fused deposition modeling (FDM). The higher-order shear deformation theory is applied to describe the mode of structure deflection and a system of nonlinear ordinary differential equations is derived to describe the forced nonlinear vibrations of the sandwich shell. The numerical approach combines the continuation technique and the shooting method to analyze the properties of nonlinear periodic vibrations and their bifurcations.
Article
Engineering, Mechanical
B. Aryal, E. Morozov, K. Shankar
Summary: This paper investigates the effects of ballistic impact damage on the mechanical behavior of composite honeycomb sandwich panels through ballistic tests and experimental analysis, evaluating the damage modes and extent using various methods. Structural performance of intact and damaged panels is studied through in-plane compression tests and numerical analysis, assessing the reduction in load-carrying ability caused by ballistic damage and comparing it with numerical simulations.
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
(2021)
Article
Materials Science, Composites
Hengyi Zhu, Hualin Fan
Summary: A lightweight carbon fiber reinforced composite sandwich cylinder with over-expanded honeycomb core has been designed and manufactured, demonstrating excellent stiffness and a relatively simpler fabrication process. Experimental and simulation analysis have revealed the strength and failure process of the cylinder.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Computer Science, Interdisciplinary Applications
Luis Santos, Bassam A. Izzuddin, Lorenzo Macorini
Summary: This study investigates the application of steel sandwich panels as two-way deck systems and proposes a design methodology based on optimization. Near-optimal designs for steel sandwich panels are achieved considering weight reduction and failure modes. Plate bending solutions and sandwich bending solutions are compared in terms of computational efficiency and accuracy, and design limit state equations are formulated based on internal stresses. The proposed methodology is verified against detailed finite element models.
STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION
(2022)
Article
Materials Science, Composites
Mohammad Tauhiduzzaman, Leif A. Carlsson, Mustafa O. Ayanoglu
Summary: Based on laminate beam theory, the design analysis of sandwich End Notch Flexure (ENF) test specimens provides insights into the optimal parameters for face and core thickness. Thicker faces and higher core density can increase the critical load for crack propagation, but elevate the risk of indentation and core shear failures; core thickness does not strongly influence the critical load for crack propagation.
JOURNAL OF COMPOSITE MATERIALS
(2021)
Article
Materials Science, Textiles
Andi Haris, Heow Pueh Lee
Summary: This study investigates the low frequency sound transmission loss (STL) of a sandwich panel with milli-perforated honeycomb core using an impedance tube test. The results show that the milli-perforated honeycomb sandwich panel achieves suitable STL values within the tested frequency range. Additionally, compression tests indicate that the milli-perforated honeycomb core does not significantly degrade the mechanical properties of the panel.
FIBERS AND POLYMERS
(2022)
Article
Mechanics
Michael May, Georg Ganzenmueller, Johannes Wolfrum, Sebastian Heimbs
COMPOSITE STRUCTURES
(2015)
Article
Mechanics
Tim Bergmann, Sebastian Heimbs, Martin Maier
COMPOSITE STRUCTURES
(2015)
Article
Engineering, Aerospace
Sebastian Heimbs, Josef Ritzer, Johannes Markmiller
INTERNATIONAL JOURNAL OF AEROSPACE ENGINEERING
(2015)
Article
Mechanics
Tim Wagner, Sebastian Heimbs, Florian Franke, Uli Burger, Peter Middendorf
COMPOSITE STRUCTURES
(2018)
Article
Engineering, Mechanical
Sebastian Heimbs, Tim Wagner, Juan Tomas Viana Lozoya, Benedikt Hoenisch, Florian Franke
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
(2019)
Article
Materials Science, Composites
Sebastian Heimbs, Bjoern Van Den Broucke, Yann Duplessis Kergomard, Frederic Dau, Benoit Malherbe
APPLIED COMPOSITE MATERIALS
(2012)
Article
Mechanics
S. Heimbs, A. C. Nogueira, E. Hombergsmeier, M. May, J. Wolfrum
COMPOSITE STRUCTURES
(2014)
Article
Mechanics
S. Heimbs, T. Bergmann, D. Schueler, N. Toso-Pentecote
COMPOSITE STRUCTURES
(2014)
Article
Engineering, Manufacturing
Sebastian Heimbs, Sebastian Schmeer, Joerg Blaurock, Stefan Steeger
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2013)
Article
Engineering, Manufacturing
S. Heimbs, M. Hoffmann, M. Waimer, S. Schmeer, J. Blaurock
INTERNATIONAL JOURNAL OF CRASHWORTHINESS
(2013)
Article
Engineering, Aerospace
Sebastian Heimbs, Tim Bergmann
INTERNATIONAL JOURNAL OF AEROSPACE ENGINEERING
(2012)
Article
Mechanics
Tim Wagner, Sebastian Heimbs, Uli Burger
COMPOSITE STRUCTURES
(2020)
Proceedings Paper
Construction & Building Technology
Sebastian Heimbs, Ulrich Fischer, Willy Theiler, Frederik Steenbergen
2ND INTERNATIONAL CONFERENCE ON STRUCTURAL INTEGRITY, ICSI 2017
(2017)
Article
Mechanics
Michael Juergens, Manuel Tiago von Hafe Perez Ferreira da Silva, Sebastian Heimbs, Holger Lang, Elisabeth Ladstaetter, Elke Hombergsmeier
COMPOSITE STRUCTURES
(2017)
Article
Engineering, Multidisciplinary
Sebastian Heimbs, Holger Lang, Tamas Havar
Correction
Materials Science, Multidisciplinary
A. D. Boccardo, M. Tong, S. B. Leen, D. Tourret, J. Segurado
COMPUTATIONAL MATERIALS SCIENCE
(2024)
Article
Materials Science, Multidisciplinary
Tao Li, Qing Hou, Jie-chao Cui, Jia-hui Yang, Ben Xu, Min Li, Jun Wang, Bao-qin Fu
Summary: This study investigates the thermal and defect properties of AlN using molecular dynamics simulation, and proposes a new method for selecting interatomic potentials, developing a new model. The developed model demonstrates high computational accuracy, providing an important tool for modeling thermal transport and defect evolution in AlN-based devices.
COMPUTATIONAL MATERIALS SCIENCE
(2024)
Article
Materials Science, Multidisciplinary
Shin-Pon Ju, Chao-Chuan Huang, Hsing-Yin Chen
Summary: Amorphous boron nitride (a-BN) is a promising ultralow-dielectric-constant material for interconnect isolation in integrated circuits. This study establishes a deep learning potential (DLP) for different forms of boron nitride and uses molecular dynamics simulations to investigate the mechanical behaviors of a-BN. The results reveal the structure-property relationships of a-BN, providing useful insights for integrating it in device applications.
COMPUTATIONAL MATERIALS SCIENCE
(2024)
Article
Materials Science, Multidisciplinary
M. Salman, S. Schmauder
Summary: Shape memory polymer foams (SMPFs) are lightweight cellular materials that can recover their undeformed shape through external stimulation. Reinforcing the material with nano-clay filler improves its physical properties. Multiscale modeling techniques can be used to study the thermomechanical response of SMPFs and show good agreement with experimental results.
COMPUTATIONAL MATERIALS SCIENCE
(2024)
Article
Materials Science, Multidisciplinary
Laura Gueci, Francesco Ferrante, Marco Bertini, Chiara Nania, Dario Duca
Summary: This study investigates the acidity of 30 Bronsted sites in the beta-zeolite framework and compares three computational methods. The results show a wide range of deprotonation energy values, and the proposed best method provides accurate calculations.
COMPUTATIONAL MATERIALS SCIENCE
(2024)
Article
Materials Science, Multidisciplinary
K. A. Lopes Lima, L. A. Ribeiro Junior
Summary: Advancements in nanomaterial synthesis and characterization have led to the discovery of new carbon allotropes, including biphenylene network (BPN). The study finds that BPN lattices with a single-atom vacancy exhibit higher CO2 adsorption energies than pristine BPN. Unlike other 2D carbon allotropes, BPN does not exhibit precise CO2 sensing and selectivity by altering its band structure configuration.
COMPUTATIONAL MATERIALS SCIENCE
(2024)
Article
Materials Science, Multidisciplinary
Jay Kumar Sharma, Arpita Dhamija, Anand Pal, Jagdish Kumar
Summary: In this study, the quaternary Heusler alloys LiAEFeSb were investigated for their crystal structure, electronic properties, and magnetic behavior. Density functional theory calculations revealed that LiSrFeSb and LiBaFeSb exhibit half-metallic band structure and 100% spin polarization, making them excellent choices for spintronic applications.
COMPUTATIONAL MATERIALS SCIENCE
(2024)
Article
Materials Science, Multidisciplinary
Roman A. Eremin, Innokentiy S. Humonen, Alexey A. Kazakov, Vladimir D. Lazarev, Anatoly P. Pushkarev, Semen A. Budennyy
Summary: Computational modeling of disordered crystal structures is essential for studying composition-structure-property relations. In this work, the effects of Cd and Zn substitutions on the structural stability of CsPbI3 were investigated using DFT calculations and GNN models. The study achieved accurate energy predictions for structures with high substitution contents, and the impact of data subsampling on prediction quality was comprehensively studied. Transfer learning routines were also tested, providing new perspectives for data-driven research of disordered materials.
COMPUTATIONAL MATERIALS SCIENCE
(2024)
Article
Materials Science, Multidisciplinary
Zhixin Sun, Hang Dong, Yaohui Yin, Ai Wang, Zhen Fan, Guangyong Jin, Chao Xin
Summary: In this study, the crystal structure, electronic structure, and optical properties of KH2PO4: KDP crystals under different pressures were investigated using the generalized gradient approximate. It was found that high pressure caused a phase transition in KDP and greatly increased the band gap. The results suggest that high pressure enhances the compactness of KDP and improves the laser damage threshold.
COMPUTATIONAL MATERIALS SCIENCE
(2024)
Article
Materials Science, Multidisciplinary
Tingting Yu
Summary: This study presents atomistic simulations revealing that an increase in driving force may result in slower grain boundary movement and switches in the mode of grain boundary shear coupling migration. Shear coupling behavior is found to effectively alleviate stress and holds potential for stress relaxation and microstructure manipulation in materials.
COMPUTATIONAL MATERIALS SCIENCE
(2024)
Article
Materials Science, Multidisciplinary
Y. Zhang, X. Q. Deng, Q. Jing, Z. S. Zhang
Summary: The electronic properties of C2N/antimonene van der Waals heterostructure are investigated using density functional theory. The results show that by applying horizontal strain, vertical strain, electric field, and interlayer twist, the electronic structure can be adjusted. Additionally, the band alignment and energy states of the heterostructure can be significantly changed by applying vertical strain on the twisted structure. These findings are important for controlling the electronic properties of heterostructures.
COMPUTATIONAL MATERIALS SCIENCE
(2024)
Article
Materials Science, Multidisciplinary
Chad E. Junkermeier, Evan Larmand, Jean-Charles Morais, Jedediah Kobebel, Kat Lavarez, R. Martin Adra, Jirui Yang, Valeria Aparicio Diaz, Ricardo Paupitz, George Psofogiannakis
Summary: This study investigates the adsorption properties of carbon dioxide (CO2), methane (CH4), and dihydrogen (H2) in carbophenes functionalized with different groups. The results show that carbophenes can be promising adsorbents for these gases, with high adsorption energies and low desorption temperatures. The design and combination of functional groups can further enhance their adsorption performance.
COMPUTATIONAL MATERIALS SCIENCE
(2024)
Article
Materials Science, Multidisciplinary
Y. Borges, L. Huber, H. Zapolsky, R. Patte, G. Demange
Summary: Grain boundary structure is closely related to solute atom segregation, and machine learning can predict the segregation energy density. The study provides a fresh perspective on the relationship between grain boundary structure and segregation properties.
COMPUTATIONAL MATERIALS SCIENCE
(2024)
Article
Materials Science, Multidisciplinary
M. R. Jones, L. T. W. Fey, I. J. Beyerlein
Summary: In this work, a three-dimensional ab-initio informed phase-field-dislocation dynamics model combined with Langevin dynamics is used to investigate glide mechanisms of edge and screw dislocations in Nb at finite temperatures. It is found that the screw dislocation changes its mode of glide at two distinct temperatures, which coincides with the thermal insensitivity and athermal behavior of Nb yield strengths.
COMPUTATIONAL MATERIALS SCIENCE
(2024)
Article
Materials Science, Multidisciplinary
Joshua A. Vita, Dallas R. Trinkle
Summary: This study introduces a new machine learning model framework that combines the simplicity of spline-based potentials with the flexibility of neural network architectures. The simplified version of the neural network potential can efficiently describe complex datasets and explore the boundary between classical and machine learning models. Using spline filters for encoding atomic environments results in interpretable embedding layers that can incorporate expected physical behaviors and improve interpretability through neural network modifications.
COMPUTATIONAL MATERIALS SCIENCE
(2024)