Article
Mechanics
Kailun Huang, Haitao Ye, Zhefeng Yu, Xiang Zhou
Summary: This paper presents an experimental and numerical study on the energy absorption properties of composite sandwich tubes with pre-folded core (CSTPC) based on the full-diamond origami pattern. The results show that CSTPC with the inversion cap exhibits impressive energy absorption properties. Through a parametric study on different geometries and compositions, it is found that CSTPC possesses better energy absorption performance than stand-alone tubes or tubes with corrugated core.
COMPOSITE STRUCTURES
(2022)
Article
Materials Science, Composites
Gaojian Lin, Jiaqi Li, Fei Li, Pengwan Chen, Weifu Sun
Summary: This study proposes a method to improve the impact resistance of sandwich composite panels (SCPs) by filling the honeycomb core with shear-thickening gel (STG) mixed with silica particles. Experimental results show that the STG-filled honeycomb core effectively decreases penetration depth and reduces impact damage of the SCPs.
COMPOSITES COMMUNICATIONS
(2022)
Article
Materials Science, Composites
Chun Zhang, Liang Liang, Leilei Yan, Xiaobo Sun, Xitao Zheng
Summary: This study proposes a manufacturing method for folded and straight corrugated plate structure using environmentally-friendly materials. Experimental investigations show that filling paraffin wax can change the compression failure mode of the sandwich materials, improving strength and energy absorption capacity. Paraffin wax exhibits excellent heat absorption and release performance, while the unfilled part can serve as a thermal flow channel.
POLYMER COMPOSITES
(2022)
Article
Engineering, Civil
Shi Zheng, Zhong Yifeng, Liu Rong, Peng Xiao
Summary: The study investigated the structure of composite sandwich folded plate, with the accuracy and effectiveness of the model verified through simplification to constitutive modeling and global analysis. The optimal performance conditions were determined based on layup configurations and core structural parameters.
THIN-WALLED STRUCTURES
(2022)
Article
Mechanics
H. Georges, G. Meyer, C. Mittelstedt, W. Becker
Summary: The quest for weight reduction while maintaining strength requires new lightweight structures that offer more advantages than existing ones. Sandwich panels can achieve high light-weight potential by improving the mechanical performance of the core. Additive manufacturing (AM) lattice structures provide comparable mechanical properties to honeycombs and allow for customization of the core properties. An analytical model is derived to determine stresses and deformations in graded lattice cores of sandwich panels, which enables better material exploitation.
COMPOSITE STRUCTURES
(2022)
Article
Engineering, Manufacturing
H. Georges, A. Grossmann, C. Mittelstedt, W. Becker
Summary: Sandwich panels are lightweight structures used in the aerospace and automobile industry. Global competition and the pressure to reduce costs require new lightweight concepts and technologies to be applied in sandwich panels. Additive manufacturing (AM) is one of these new technologies, which allows for the creation of new structures such as strut-based lattices as cores for sandwiches. A new computational model is developed in this study to predict stresses and displacements in sandwich panels and optimize their design.
ADDITIVE MANUFACTURING
(2022)
Article
Engineering, Civil
Fukun Xia, Tong Pang, Guangyong Sun, Dong Ruan
Summary: The mechanical response of aluminium corrugated sandwich panels with different core shapes under longitudinal three-point bending is studied in this paper. Experimental and numerical methods are used, and the results are in good agreement. Parametric studies are conducted to investigate the effects of core parameters, and two deformation modes are observed. Finally, a multiobjective Bayesian optimization method is applied to optimize the geometry of trapezoidal corrugated sandwich panels to enhance specific energy absorption and reduce intrusion depth.
THIN-WALLED STRUCTURES
(2022)
Article
Chemistry, Physical
Leonel Quinteros, Viviana Meruane, Eduardo Lenz Cardoso, Rafael O. Ruiz
Summary: Recent progress in additive manufacturing and structural topological optimization has driven the development of custom cellular materials with complex topologies, leading to improved structural efficiency. Truss-like cellular structures show promise for lightweight applications due to their excellent strength-to-mass ratio and unique vibration properties, such as the phononic bandgap. By optimizing the topology of sandwich panels using cellular truss cores, significant benefits can be achieved in various applications, including satellites, spacecraft, aircraft, ships, and automobiles, by maximizing the phononic bandgap.
Article
Chemistry, Physical
Tomasz Garbowski, Tomasz Gajewski
Summary: The proposed method extends the approach by Biancolini to allow for the determination of transverse shear stiffness in addition to tensile and flexural stiffness in homogenized corrugated board. The method is based on strain energy equivalence and uses shell finite elements to accurately represent the geometry of the corrugated board. The stability of the method was tested and results were consistent with existing techniques in literature.
Article
Engineering, Manufacturing
Arturo Gomez, Sonia Sanchez-Saez, Enrique Barbero
Summary: This paper investigates the behavior of sandwiches under impact loads that cause penetration without complete perforation. The perforation velocity was determined for two different core materials, and the panel response under complete perforation was analyzed using 3D-DIC analysis. The out-of-plane displacements were greater in the sandwich with agglomerated cork due to its lower stiffness. Visual inspection and X-ray computed tomography were used to study the damage and failure mechanisms in both sandwich configurations. The type of core material affected the failure modes observed in the sandwich.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Engineering, Civil
Mohsen Jeddi, Mojtaba Yazdani, Hosein Hasan-nezhad
Summary: The study investigated the energy absorption characteristics of aluminum sandwich panels filled with Shear Thickening Fluid (STF) under various loading conditions. The presence of STF was found to improve impact absorption and compressive performance of the sandwich panels. The 2Al-5STF specimen showed the highest absorbed energy and ballistic impact resistance, while the 2Al-3STF specimen demonstrated the highest peak force reduction per unit areal density and the 2Al-5Neat specimen showed better reversibility.
THIN-WALLED STRUCTURES
(2021)
Article
Engineering, Civil
Fukun Xia, Yvonne Durandet, P. J. Tan, Dong Ruan
Summary: The bending performances of various types of sandwich panels were studied and compared experimentally and numerically in this paper. Three distinct modes of deformation were identified through parametric studies. The analysis results showed that the honeycomb core had the highest specific energy absorption.
THIN-WALLED STRUCTURES
(2022)
Article
Materials Science, Composites
Avishek Chanda, Nam Kyeun Kim, Debes Bhattacharyya
Summary: Composite sandwich structures using fire-retardant wool-polypropylene core sandwiched between wood veneers demonstrate superior fire-reaction properties and mechanical properties compared to traditional plywood and solid FR wool-PP composites.
COMPOSITES COMMUNICATIONS
(2021)
Article
Mechanics
Shanshan Shi, Xin Zhou, Jiasen Zhang, Bingzhi Chen, Zhi Sun
Summary: In this study, honeycomb cores with periodic tight zones were proposed as structures for carbon-fiber and aluminum-honeycomb sandwich panels. In-plane compression tests were conducted to evaluate the effects of the local-tight configurations on mechanical properties and failure modes. Experimental results showed that the mechanical properties of sandwich specimens were effectively improved by using the proposed local-tight honeycomb cores. Furthermore, the use of Digital Image Correlation (DIC) technique revealed that the sandwich structures with local-orthogonal-tight honeycomb cores exhibited progressive crushing failure modes.
COMPOSITE STRUCTURES
(2023)
Article
Mechanics
Keyu Zhu, Xitao Zheng, Cong Zhang, Niu Chen, Yagang Han, Leilei Yan, M. Quaresimin
Summary: A novel all-composite sandwich panel with channel core was proposed to enhance compressive strength and energy absorption characteristics. Experimental and numerical analysis results showed that the proposed structure exhibited better compressive strength and specific energy absorption compared to the traditional corrugated core sandwich panel. Further optimization of the structural efficiency through foam filling significantly increased the compressive strength and energy absorption.
COMPOSITE STRUCTURES
(2022)
Article
Engineering, Civil
L. Franzoni, A. Lebee, F. Lyon, G. Foret
ENGINEERING STRUCTURES
(2018)
Article
Forestry
Olivier Perret, Arthur Lebee, Cyril Douthe, Karam Sab
EUROPEAN JOURNAL OF WOOD AND WOOD PRODUCTS
(2019)
Article
Mechanics
G. Corre, A. Lebee, K. Sab, M. K. Ferradi, X. Cespedes
Article
Acoustics
Pierre Margerit, Arthur Lebee, Jean-Francois Caron, Kerem Ege, Xavier Boutillon
JOURNAL OF SOUND AND VIBRATION
(2019)
Article
Engineering, Civil
Olivier Perret, Cyril Douthe, Arthur Lebee, Karam Sab
ENGINEERING STRUCTURES
(2020)
Article
Mechanics
Nadine Bejjani, Pierre Margerit, Karam Sab, Joanna Bodgi, Arthur Lebee
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2020)
Article
Construction & Building Technology
Benoit P. Gilbert, Daniel Dias-da-Costa, Arthur Lebee, Gilles Foret
CONSTRUCTION AND BUILDING MATERIALS
(2020)
Article
Optics
Pierre Margerit, Tristan Gobin, Arthur Lebee, Jean-Francois Caron
Summary: The article introduces an original experimental setup called the Robotized Laser Doppler Vibrometer (RLDV) for measuring the dynamic response of structures, discussing motivations, challenges, and strategies associated with using a robot arm for experiments. The system enhances measurement accuracy through virtual model design and simulation of the experimental process, achieving automated measurements.
OPTICS AND LASERS IN ENGINEERING
(2021)
Article
Thermodynamics
A. Lebee, G. Corre, M. K. Ferradi, K. Sab, X. Cespedes
Summary: The paper presents a comprehensive and consistent introduction to the Asymptotic Expansion Load Decomposition higher-order beam model, which is based on the classical two-scale asymptotic expansion and has been successfully applied to eigenstrains and small deformations in civil engineering.
CONTINUUM MECHANICS AND THERMODYNAMICS
(2023)
Article
Materials Science, Multidisciplinary
Baptiste Durand, Arthur Lebee, Pierre Seppecher, Karam Sab
Summary: This paper presents a pantographic material with significant strain-gradient effects, which is easy to fabricate and has excellent performance. By using an appropriate homogenization scheme and scale selection, it is possible to control the strains and displacements in compliant junctions.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2022)
Article
Engineering, Mechanical
Hussein Nassar, Arthur Lebee, Emily Werner
Summary: The principles of origami design have practical applications in various technologies. This study provides a unified theory to understand and control the morphing paths of origami metamaterials through determining the compatible strains and corresponding elasticity functionals. The research reveals that different origami tessellations exhibit universal geometric and elastic properties.
EXTREME MECHANICS LETTERS
(2022)
Article
Engineering, Biomedical
K. Cheikho, J. F. Ganghoffer, A. Baldit, E. Labbe, S. Alix, H. Kerdjoudj, C. Mauprivez, A. Lebee, C. Laurent
Summary: A flexible design framework is proposed to generate various three-dimensional scaffold structures, including cylindrical graded scaffolds, by making use of a non-periodic mapping. The design procedure allows separately governing longitudinal and transverse anisotropic scaffold properties. Common additive manufacturing techniques are also investigated for fabricating the proposed structures.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2023)
Article
Mechanics
V. Calisti, A. Lebee, A. A. Novotny, J. Sokolowski
Summary: In this paper, new microstructures with significant strain-gradient effects are generated for the first time through topological optimization of two-dimensional periodic media. The optimized shape functionals depend on the first and second-order homogenized tensors obtained from a two-scale asymptotic expansion homogenization scheme. The optimization method used here relies on the recently derived topological derivative of the second-order homogenized tensor, which measures the strain-gradient sensitivity with respect to a small circular inclusion at the microscopic level with different material properties.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2023)
Article
Engineering, Multidisciplinary
V Calisti, A. Lebee, A. A. Novotny, J. Sokolowski
Summary: The study investigates a multiscale elasticity model of solids with singular geometrical perturbations of microstructure for purposes such as optimum design. The homogenized linear elasticity tensors of first and second orders are considered in the framework of periodic Sobolev spaces. Sensitivity analysis of the second order homogenized elasticity tensor to topological microstructural changes is derived by introducing a small circular inclusion for topological perturbation of the microstructure.
JOURNAL OF ELASTICITY
(2021)
Article
Engineering, Civil
Ricardo Maia Avelino, Olivier Baverel, Arthur Lebee
JOURNAL OF THE INTERNATIONAL ASSOCIATION FOR SHELL AND SPATIAL STRUCTURES
(2019)
Article
Mechanics
Zhiqiang Meng, Xu Gao, Hujie Yan, Mingchao Liu, Huijie Cao, Tie Mei, Chang Qing Chen
Summary: This paper presents a cage-shaped, self-folding mechanical metamaterial that exhibits multiple deformation modes and has tunable mechanical properties, providing multifunctional applications in various fields.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Hasan Murat Oztemiz, Semsettin Temiz
Summary: Sandwich panel composites have various applications and their mechanical behavior and performance depend on material properties and geometry. The load-carrying capacity of S-core composite sandwich panels increases with the increase of the core wall thickness, but decreases with the increase of the core height.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Yang Sun, Wei Zhang, Weipeng Hu, Mabao Liu
Summary: The study presents a novel computational framework to investigate the effect of graphene percolation network on the strength-ductility of graphene/metal composites. It utilizes the Cauchy's probabilistic model, the field fluctuation method, and the irreversible thermodynamics principle.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Elaheh Kazemi-Khasragh, Juan P. Fernandez Blazquez, David Garoz Gomez, Carlos Gonzalez, Maciej Haranczyk
Summary: This study explores group interaction modelling (GIM) and machine learning (ML) approaches for predicting thermal and mechanical properties of polymers. ML approach offers more reliable predictions compared to GIM, which is highly dependent on the accuracy of input parameters.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Yafei Yin, Shaotong Dong, Dong Wu, Min Li, Yuhang Li
Summary: This paper investigates a bending-induced instability in sandwiched composite structures, and establishes a phase diagram to predict its characteristics. The results are of great significance in understanding the physical mechanisms of bending instability and providing design guidelines for practical applications.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Dhairya R. Vyas, Sharen J. Cummins, Gary W. Delaney, Murray Rudman, Devang V. Khakhar
Summary: In this study, multiple collisions of granules on a substrate are analyzed using Collisional Smooth Particle Hydrodynamics (CSPH) to understand the influence of impact-induced deformation on subsequent collision dynamics. It is found that the collision dynamics are dependent on the impact location and the deformation caused by preceding impacts. The accuracy of three theoretical models is also evaluated by comparing their predictions with CSPH results, and it is discovered that these models are only useful for predicting collisions at the same location repeatedly.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Sneha B. Cheryala, Chandra S. Yerramalli
Summary: The effect of hybridization on the growth of interface crack along the fiber is predicted. The study shows an enhancement in the compressive splitting strength with hybridization due to the lateral confinement effect on the interfacial crack.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Xiang-Nan Li, Xiao-Bao Zuo, Liang Li, Jing-Han Liu
Summary: A multiscale mechanical model is proposed to quantitatively describe the macro-mechanical behavior of fiber reinforced concrete (FRC) based on its multiscale material compositions. The model establishes the stiffness and strength equations for each scale of FRC and demonstrates the influence of steel fiber parameters on the mechanical properties of FRC.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Vicente Ramirez-Luis, Hilario Hernandez-Moreno, Orlando Susarrey-Huerta
Summary: In this paper, a Multicell Thin-walled Method is developed for studying the stress distributions in multimaterial beams. This method accurately obtains complex stress fields while reducing the solution time and computational cost. Validation with the finite element method confirms the accuracy of the proposed method.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Yanfeng Zheng, Siyuan Li, Jingyao Zhang, Yaozhi Luo
Summary: This study proposes an enhanced simplified model based on finite particle method (FPM) to consider the link cross-sectional size and contact in Bennett linkages. The model introduces virtual beams and contact forces to accurately simulate the real-world behavior of Bennett linkages. The proposed method is effective for dynamic analysis of large-scale deployable Bennett linkages and shows great potential.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Viktoriya Pasternak, Heorhiy Sulym, Iaroslav M. Pasternak
Summary: This paper investigates anisotropic elastic, magnetoelectroelastic, and quasicrystal solids and presents their equations of time-harmonic motion and constitutive relations in a compact and unified form. A matrix approach is proposed to derive the 3D time-harmonic Green's functions for these materials. The effects of phason field dynamics on the phonon oscillations in quasicrystals are studied in detail. The paper provides a strict proof that the eigenvalues of the time-harmonic magnetoelectroelaticity problem are all positive. It also demonstrates the application of the obtained time-harmonic Green's functions in solving boundary value problems for these materials using the derived boundary integral equations.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Jan Tomec, Gordan Jelenic
Summary: This paper investigates the relationship between different formulations and contact-force models in beam-to-beam contact mechanics. It specifically addresses the recently developed mortar method and develops its variant based on the penalty method. The developed elements are tested using the same examples to provide an objective comparison in terms of robustness and computational cost.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Paulo Teixeira Goncalves, Albertino Arteiro, Nuno Rocha, Fermin Otero
Summary: This work presents a novel formulation of a 3D smeared crack model for unidirectional fiber-reinforced polymer composites based on a stress invariant approach for transverse yielding and failure initiation. The performance of the model is evaluated using monotonic and non-monotonic damage evolution, verified with single element tests and compared with experimental results.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Hanbin Yin, Yinji Ma, Xue Feng
Summary: This paper investigates the peeling behavior of a viscoelastic film bonded to a rigid substrate and establishes a theoretical peeling model. The study reveals three typical relationships between the peeling force and peeling velocity, which depend on the viscous dissipation within the film and the rate-dependent adhesion at the interface. Additionally, factors such as film thickness, interfacial toughness, and interfacial strength are identified as influencing the steady-state peeling force.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Peter Noe Poulsen, John Forbes Olesen
Summary: Finite Element Limit Analysis (FELA) is increasingly used to calculate the ultimate bearing capacity of structures made of ductile materials. This study presents a consistent and general weak formulation based on virtual work for both the lower and upper bound problem, ensuring uniqueness of the optimal solution. A plane element with linear stress variation and quadratic displacement field is introduced, showing good results for load level, stress distribution, and collapse mechanism even for coarse meshes in verification and reinforced concrete examples.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
