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Article
Engineering, Mechanical
Hui Li et al.
Summary: The amplitude-dependent damping characteristics of all-composite sandwich (ACS) plates with a hexagon honeycomb core (HHC) filled by soft foam (SF) are investigated. The solutions of nonlinear fundamental frequencies, mode shapes, and damping ratios of HHC-SF-ACS plates are obtained theoretically. It is found that increasing the Young's or shear moduli of foam material and the filling ratio of SF can improve the damping property of the composite plates significantly.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Mechanics
Davoud Shahgholian-Ghahfarokhi et al.
Summary: This article investigates the free vibration analysis of composite sandwich cylindrical shells with grid cores through experimental and numerical methods. The experimental aspect involves the design and fabrication of specimens using a new silicone rubber mold and filament winding setup. Modal testing is performed and natural frequencies are extracted. A 3D finite element model is constructed for validation. The comparison between experimental and numerical results demonstrates good agreement. Additionally, a parametric study examines the influence of outer and inner skin thicknesses, rib thickness, ribs' number, skin fiber angle, and boundary conditions on the natural frequency. Lastly, the sandwich shells are compared to both unstiffened and stiffened shells, revealing significant differences in natural frequencies.
MECHANICS BASED DESIGN OF STRUCTURES AND MACHINES
(2022)
Review
Mechanics
Christopher J. Hunt et al.
Summary: Composite materials have been widely used in various applications due to their weight-saving potential. While they are ideal for lattice structures from a structural standpoint, there are challenges in their manufacturing process. Current research focuses on different approaches to creating composite lattice structures and highlights progress made in each classification.
COMPOSITE STRUCTURES
(2022)
Article
Engineering, Multidisciplinary
A. Gliszczynski et al.
Summary: This paper deals with the application of Vibration-Correlation Technique (VCT) to estimate the buckling load of thin-walled, unstiffened CFRP truncated cones. The study validated the structural response and assessed the predictive capabilities of VCT through parameter studies. The results showed that VCT is sensitive to ply topology design and initial imperfections, and the predictions are conservative with little influence from thickness imperfections.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Engineering, Multidisciplinary
Xin Wang et al.
Summary: This study systematically investigates the effect of polyurea coating on the shock resistance of fully-clamped metallic corrugated core sandwich panels against high-velocity aluminum foam projectile impact. The results show that the presence of polyurea coating helps reduce permanent deflection and prevent shear failure. The benefits of polyurea coating in mitigating impact deformation remain stable regardless of the projectile momentum, and thicker, larger, and impact-side coating is preferred. The improved performance is mainly attributed to enhanced plastic bending moment and membrane force in the polyurea-coated sandwich panel.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Materials Science, Composites
Haiyang Yang et al.
Summary: Fluted-core sandwich composites offer great potential in lightweight engineering applications. This study designed and fabricated trapezoidal fluted-core sandwich composite cylinders made of carbon fiber-reinforced plastics to improve deformation stability. The effects of circumferential cell number and wall thickness on bearing characteristics and failure mechanism were assessed. The results showed that increasing cell number and wall thickness could improve critical local buckling load and enhance specific buckling load.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Mechanics
Pengcheng Xue et al.
Summary: In this study, the mode I face-core interfacial debonding of an all-composite sandwich beam with CFRP hexagonal honeycomb core was characterized and studied through a combination of theoretical modeling and experimental testing. The results validated the effectiveness of the theoretical model and revealed the crack initiation and propagation mechanisms during the debonding process. A parametric study was conducted to evaluate the influence of various factors on the mechanical performance.
ENGINEERING FRACTURE MECHANICS
(2022)
Article
Engineering, Mechanical
Mehdi Zarei et al.
Summary: In this study, the free vibration behavior of sandwich conical shells with reinforced cores was investigated using experimental, analytical, and numerical methods. A new effective smeared method was employed to determine equivalent stiffness of the whole structure. The results were validated through experimental modal analysis, finite element modeling, and considering factors such as stiffener cross-sectional area and orientation angle. The findings can serve as a benchmark for future studies.
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
(2022)
Article
Engineering, Civil
M. Zarei et al.
Summary: The present study investigates the buckling analysis of joined composite sandwich conical-cylindrical shells with reinforced lattice core subjected to external pressure. The stiffness parameters of the lattice core are determined using an effective smeared technique and combined with those of the skins. The theoretical formulation is based on first-shear deformation theory and continuity conditions. A highly accurate solution for evaluating the buckling load is provided using power series technique. Finite element analysis is performed to validate the analytical model, and the influence of important design variables on buckling characteristics is investigated.
THIN-WALLED STRUCTURES
(2022)
Article
Engineering, Multidisciplinary
Hui Li et al.
Summary: In this study, the impact and vibration response characteristics of fiber reinforced polymer sandwich plates with a foam core reinforced by chopped fiber rods are investigated. A dynamic model is proposed to predict the vibro-impact characteristics of the structures. The model is validated through experiments, and the results show that adding fiber reinforcement can reduce the vibro-impact response. The study also suggests that adjusting geometric and material parameters can further reduce the vibration response.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Engineering, Civil
Hui Li et al.
Summary: The vibration suppression performance of composite pyramidal truss sandwich cylindrical shell panels with damping coating (DC) is investigated in this study. A novel theoretical model is developed based on the first-order shear deformation theory, artificial spring technique, Rayleigh-Ritz variational approach, and Duhamel integral method. Vibration tests are conducted to validate the model, and a parametric study is performed to analyze the influence of key material and geometric parameters on vibration properties. The results provide important insights for enhancing the vibration suppression capabilities of the DC-CPTSCS panels.
THIN-WALLED STRUCTURES
(2022)
Article
Engineering, Manufacturing
Zhibin Li et al.
Summary: An innovative winding-based method is proposed to fabricate the all-composite honeycomb sandwich cylinder (CHSC) with excellent mechanical properties. The study also explores the multi-failure mechanisms of CHSC under axial compression, providing detailed analysis of the failure modes.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Review
Engineering, Aerospace
Ming Li et al.
Summary: This article introduces the application of carbon fiber reinforced composite lattice cylindrical shells in lightweight structural designs. The configurations of three typical lattice structures are demonstrated, and their performance under compression and vibration is discussed. Non-destructive methods and failure theories are also presented to predict the mechanical properties and failure loads of the shells.
PROGRESS IN AEROSPACE SCIENCES
(2022)
Article
Engineering, Multidisciplinary
Zhengxian Liu et al.
Summary: Multifunctional structures with excellent microwave absorption performance and mechanical properties have recently gained attention. In this research, a novel absorption structure was designed and fabricated, combining a composite hierarchical grid structure with a 3D absorption metamaterial. The absorption bandwidth and mechanical properties of the structure were investigated and demonstrated to have broad absorption capabilities and effective load bearing.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Engineering, Mechanical
Mao Yang et al.
Summary: This study investigates the vibration and load-carrying capacities of metallic sandwich-walled structures through experimental and numerical methods, and quantifies the influence of geometric parameters on their performance. A multifunctional design approach is also demonstrated to meet the requirements of high load-bearing capacity and low natural frequency constraints.
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
(2021)
Article
Engineering, Multidisciplinary
Xinye Cao et al.
Summary: Innovative sandwich cylinders with pyramidal lattice truss-cores were designed, printed, tested, and analyzed using selective laser melting (SLM) additive manufacturing (AM) technique. Uniaxial compression tests of two groups of aluminum alloy sandwich cylinders showed failure at facesheet yielding, followed by post-plastic local buckling. A new multi-failure theory was proposed to predict plastic buckling load and provide a hierarchical failure map for optimal design of additively manufactured lattice-core sandwich cylinders.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Materials Science, Composites
Yuntong Du et al.
Summary: This method utilizes folding to create lightweight sandwich materials with high strength and energy absorption capacity. By incorporating PMI foams, the compressive failure mode of the composite material is changed, leading to increased strength.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Mechanical
Tao Fu et al.
Summary: This paper presents analytical studies on the dynamic instability of functionally graded material sandwich conical shell subjected to time dependent periodic parametric axial and lateral load. The governing equations are established by considering first order shear deformation shell theory, and the Mathieu-Hill equations describing the parametric stability are obtained by generalized differential quadrature method. The influences of sandwich distribution types, gradient indexes, skin-core-skin ratio and load forms on the dynamic stability of FGM sandwich conical shell have been investigated.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2021)
Review
Materials Science, Characterization & Testing
Yifeng Fu et al.
Summary: The study reviews different types of polymer-based underwater sound absorption materials, including IPN, polymer foams, and gradient polymers. It also discusses methods to transform polymers into underwater sound absorption materials by introducing different types of inclusions. The article also presents the challenges in developing better polymer acoustic materials to meet the requirements of underwater applications.
Review
Engineering, Multidisciplinary
Vinh Tung Le et al.
Summary: This paper provides a comprehensive review of recent research efforts on sandwich structures for thermal protection systems (TPS) in hypersonic vehicles, discussing topics such as structural and material design, mechanical performance, and manufacturing methods. The research shows that in the development of hypersonic vehicles, the application of sandwich structures in TPS has become increasingly important.
COMPOSITES PART B-ENGINEERING
(2021)
Review
Materials Science, Composites
Tayyab Khan et al.
POLYMER COMPOSITES
(2020)
Article
Engineering, Civil
Mehdi Bohlooly et al.
THIN-WALLED STRUCTURES
(2020)
Article
Materials Science, Multidisciplinary
Dong-Wei Wang et al.
MATERIALS & DESIGN
(2020)
Review
Engineering, Multidisciplinary
XingYu Wei et al.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2020)
Article
Mechanics
Houchang Liu et al.
COMPOSITE STRUCTURES
(2020)
Article
Engineering, Mechanical
M. Zarei et al.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2020)
Article
Engineering, Manufacturing
Biao Liu et al.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2019)
Article
Materials Science, Composites
Yuntong Du et al.
COMPOSITES SCIENCE AND TECHNOLOGY
(2019)
Article
Engineering, Civil
Mao Yang et al.
THIN-WALLED STRUCTURES
(2019)
Article
Engineering, Civil
H. N. R. Wagner et al.
THIN-WALLED STRUCTURES
(2019)
Review
Engineering, Aerospace
K. K. Sairajan et al.
Article
Mechanics
G. Totaro
COMPOSITE STRUCTURES
(2016)
Article
Mechanics
Jian Xiong et al.
COMPOSITE STRUCTURES
(2016)
Article
Mechanics
H. Sharghi et al.
Article
Mechanics
V. V. Vasiliev et al.
COMPOSITE STRUCTURES
(2012)