Article
Mechanics
Mohammad Malikan, Victor A. Eremeyev
Summary: This paper investigates the buckling of a magnetic composite nanoplate under the influence of an in-plane one-dimensional magnetic field, considering the concept of flexomagnetic. The critical buckling load is obtained for different support conditions, and the effects of nonlocal parameter, sheet aspect ratio, and one-dimensional magnetic field on critical load are discussed. It is found that the flexomagnetic response is more noticeable when the nanoplate is rectangular and the aspect ratio is less than one.
COMPOSITE STRUCTURES
(2021)
Article
Engineering, Multidisciplinary
Jonathan Fuller, Sam Mitchell, Thomas Pozegic, Xun Wu, Marco Longana, Michael Wisnom
Summary: Testing angle-ply CFRP composites under different environmental conditions shows significant influence of temperature and moisture on their performance. Specimens at different temperatures exhibit different failure behaviors, with wet specimens showing lower failure stresses and higher failure strains compared to dry specimens.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Mechanics
Ashraf M. Zenkour, Hela D. El-Shahrany
Summary: In this study, the vibration of a simply supported rectangular composite laminated plate with four actuating magnetostrictive layers was analyzed. The effects of temperature and moisture concentrations on the vibration behavior were investigated, indicating that increasing intelligent actuating layers improves the vibration damping process, but their position also plays a crucial role. Additionally, hygrothermal conditions reduce the ability of smart components to suppress structure vibration.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2021)
Article
Chemistry, Physical
Feixiang Tang, Siyu He, Shaonan Shi, Shun Xue, Fang Dong, Sheng Liu
Summary: The purpose of this paper is to study the bending, buckling, and vibration of micro-thin plates by considering the micro-scale effects. The results show that the scale effect increases the equivalent stiffness of the thin plate, leading to a decrease in deflection, a larger critical buckling load, and an increase in natural frequency, but does not affect the buckling topography. The findings of this research may contribute to the design of micro-scale devices such as MEMSs/NEMSs.
Article
Polymer Science
Mingrui Xu, Benyin Zeng, Ziqian An, Xin Xiong, Xiaoquan Cheng
Summary: The fatigue properties of composite materials are significantly affected by temperature and moisture content. Experimental results showed that moisture absorption and high temperature weakened the high-cycle fatigue properties, while strengthening the low-cycle fatigue properties. The delamination failure mode was the most severe in elevated temperature/wet conditions.
Article
Computer Science, Interdisciplinary Applications
Ashraf M. Zenkour, Hela D. El-Shahrany
Summary: This article utilizes a quasi-3D trigonometric shear deformation plate theory to study the vibration response of an advanced composite plate, investigating methods for controlling and enhancing vibration damping. The numerical results reveal the significant factors influencing the vibration damping characteristics.
ENGINEERING WITH COMPUTERS
(2022)
Article
Engineering, Multidisciplinary
BingBing Wang, Chunsheng Lu, CuiYing Fan, MingHao Zhao
Summary: In this paper, a meshfree Galerkin approach is presented for analyzing free vibration and buckling of strain gradient thin plates. The method utilizes smooth meshfree approximation to reduce variables and introduces a consistent integration scheme with gradient smoothing. Numerical results confirm the effectiveness of this approach, which is superior to traditional methods.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2021)
Article
Engineering, Multidisciplinary
Ahmed Amine Daikh, Mohamed Sid Ahmed Houari, Mohamed Ouejdi Belarbi, Salwa A. Mohamed, Mohamed A. Eltaher
Summary: This manuscript presents a comprehensive study on the effects of thickness stretching on the free vibration, static stability, and bending of multilayer functionally graded carbon nanotubes reinforced composite nanoplates. Nonlocal strain gradient continuum model is used to consider the nanoscale and microstructure influences. Parametric analysis is conducted to explore the impact of different parameters on the stresses, deformation, critical buckling loads, and vibration frequencies.
DEFENCE TECHNOLOGY
(2022)
Article
Mechanics
L. H. Tong, F. Lin, Y. Xiang, H-S Shen, C. W. Lim
Summary: This paper employs a general third-order shear deformation plate theory to study the buckling behaviors of rectangular nanoplates, establishing a new model with non-isotropic surface effects and obtaining analytical solutions for critical buckling loads. The influence of various factors on the buckling behavior of nanoplates, such as plate thickness, length-to-thickness ratio, surface modulus, residual surface stress, is analyzed in detail using both Reddy's TSDPT and GTSDPT. The presence of shear stresses on the interface between surface layers and the bulk of the plates leads to differences in buckling results between TSDPT and GTSDPT, indicating the need for the latter theory.
COMPOSITE STRUCTURES
(2021)
Article
Mechanics
Serena Saitta, Raimondo Luciano, Riccardo Vescovini, Nicholas Fantuzzi, Francesco Fabbrocino
Summary: This paper presents the dynamic analysis of composite simply supported nanoplates using the second order strain gradient theory. Numerical results are obtained using the Mesh Free Radial Point Interpolation Method. The study includes uniaxial and biaxial buckling as well as free vibration analysis. Various plate aspect ratios and material property ratios are considered in the buckling analysis, while different lamination sequences and nonlocal parameter values are considered in the vibration analysis. The numerical results are compared with analytical results in the literature in terms of percentage error.
COMPOSITE STRUCTURES
(2022)
Article
Engineering, Multidisciplinary
Duc Hong Doan, Thom Van Do, Nguyen Xuan Nguyen, Pham Van Vinh, Nguyen Thoi Trung
Summary: The phase-field theory is a well-known mathematical model for solving interface problems, including crack problems in fracture mechanics. In this study, the formula is derived and simulated to capture the crack behavior of each ply in laminated composite plates with buckling phenomenon. The research focuses on laminated composite plates with cracks in each layer.
APPLIED MATHEMATICAL MODELLING
(2021)
Article
Engineering, Multidisciplinary
Pham Toan Thang, Phuong Tran, T. Nguyen-Thoi
Summary: This research paper investigates the vibrational responses of functionally graded carbon nanotube-reinforced composite nanoplates considering the effect of nonlocal parameter and strain gradient coefficient. By studying four types of CNT distribution under small length scale effects, the study aims to estimate the fundamental natural frequencies in FG-CNTRC nanoplates. The mathematical modeling and analytical solutions provide insights into how the small length-scale influences the vibrational behavior of nanoplates.
APPLIED MATHEMATICAL MODELLING
(2021)
Article
Acoustics
Yuyu Song, Kai Xue, Qiuhong Li
Summary: The proposed method solves the free vibration problem of polygonal thin plates by dividing the polygonal domain of integration into triangular and trapezoidal domains and using Jacobi orthogonal polynomials to calculate the energy integral. Boundary conditions are modeled using linear springs to restrict plate edges.
JOURNAL OF SOUND AND VIBRATION
(2022)
Article
Mechanics
Ahmed Amine Daikh, Attia Bachiri, Mohamed Sid Ahmed Houari, Abdelouahed Tounsi
Summary: This study focuses on the buckling and free vibration of simply-supported cross-ply/angle-ply single-walled carbon nanotubes reinforced composite CNTRC laminated nanoplates in thermal environment. Nonlocal strain gradient theory and third-order shear deformation plate theory are used to analyze the size-dependent effects. The influence of reinforcement patterns, composite structure, nonlocal parameter, length scale parameter, carbon nanotubes orientation, and geometric parameters on buckling loads and natural frequencies is examined.
MECHANICS BASED DESIGN OF STRUCTURES AND MACHINES
(2022)
Article
Mechanics
Mengzhen Li, Renjun Yan, Lin Xu, C. Guedes Soares
Summary: A novel unified framework of higher-order shear deformation theories for laminated and functionally graded plates is developed, aiming to unify existing theories and propose new models. By categorizing existing displacement fields and unifying different types of transverse displacements and shear strains, the study assesses and proposes new plate theories. Application of specific shear strain functions helps determine a new higher-order shear deformation theory that theoretically covers existing models and encourages further exploration of accurate plate theories.
COMPOSITE STRUCTURES
(2021)
Article
Materials Science, Multidisciplinary
Sina Saberi, Nicholas Fantuzzi
Summary: This study investigates the usefulness of open-source software in finite element modeling and examines the behavior of reinforced and unreinforced T-joint specimens using Code_Aster and Salome-Meca software. The results show that Code_Aster can reliably predict the behavior of complex offshore joints.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
Article
Mechanics
Marco Colatosti, Farui Shi, Nicholas Fantuzzi, Patrizia Trovalusci
Summary: The purpose of this study is to investigate the mechanical behavior of microstructured materials, specifically porous media. Discrete and continuous models were compared to analyze the material's response under static and dynamic conditions. Variations in the internal characteristics of the material, such as microstructure scale and void percentage, were examined for a thorough comparison among the models.
ARCHIVE OF APPLIED MECHANICS
(2023)
Article
Materials Science, Multidisciplinary
Tian-Wei Liu, Jiang-Bo Bai, Nicholas Fantuzzi
Summary: This paper establishes analytical models for predicting the folding moment and the ultimate coiling radius of the thin-walled lenticular deployable composite boom. By using the non-dominated sorting genetic algorithm III, an optimization framework is proposed and 48 design points that are better than the test sample are found on the Pareto front.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
Article
Materials Science, Multidisciplinary
M. Avey, N. Fantuzzi, A. H. Sofiyev
Summary: This study investigates the thermoelastic stability of carbon nanotube (CNT) patterned composite conical shells using the shear deformation theory (ST). Two different boundary value problems are considered, depending on whether material properties are temperature independent or dependent. The study derives the basic equations for CNT patterned truncated conical shells using the modified Donnell-type shell theory and applies the Galerkin method to find the critical temperature and critical axial load expressions. The effects of CNT patterns, volume fraction, radius-to-thickness and length-to-thickness ratios, as well as the half-peak angle on critical parameters within the ST are estimated by comparison with classical shell theory (CT).
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
Article
Mechanics
Shakiba Zolfaghari, Davood Mostofinejad, Nicholas Fantuzzi, Raimondo Luciano, Francesco Fabbrocino
Summary: In this study, the effect of groove width and depth variation on the FRP-concrete bond performance was investigated. The results showed that the grooving method increased the bond strength compared to the externally-bonded reinforcement method. The optimal groove dimensions for retrofitting were determined to be 10 x 5 mm (width x depth) with a 73.5% increase in load-carrying capacity compared to the EBR specimens.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Multidisciplinary
C. A. Yan, R. Vescovini, N. Fantuzzi
Summary: The paper presents a new machine learning technique for studying thin nanoplates at the nanoscopic level. The technique combines the second-order strain gradient theory and Physics-Informed Neural Networks (PINNs) to solve partial differential equations and determine the length scale parameter of the nanoplate model. The results demonstrate the accuracy and efficiency of this machine learning framework for solving high-order PDEs and its stability and reliability through parameter studies.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2023)
Article
Mechanics
M. Bacciocchi, N. Fantuzzi, A. M. A. Neves, A. J. M. Ferreira
Summary: Nonlocal elasticity is gaining popularity for capturing size-dependent effects and incorporating advanced constituents. This paper introduces the strain gradient theory into thin plate formulation, using a finite element model based on higher-order Hermite interpolating functions. The mechanical behavior of laminated composite square plates with holes, which cannot be solved analytically, is evaluated using this method.
MECHANICS RESEARCH COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Saaranya Kumar Dasari, Nicholas Fantuzzi, Patrizia Trovalusci, Roberto Panei, Marco Pingaro
Summary: This paper presents a design approach for generating and structurally optimizing the geometric form in the conceptual design phase. It is applied to a canopy of an ecological island in Rome. Parametric structural design allows decision-makers to rapidly generate and analyze optimal design solutions in the conceptual stage. The shape-optimized canopy meets various requirements and improves structural efficiency and design collaboration.
Article
Chemistry, Multidisciplinary
Razie Izadi, Patrizia Trovalusci, Nicholas Fantuzzi
Summary: All-atom molecular dynamics simulations were used to study the fracture mechanism of polylactic acid nanofibres doped with metallic nanoparticles. The presence of doping nanoparticles improves the fracture properties of the polymer nanofibre by inhibiting crack initiation and propagation. The effect of the distribution of nanoparticles was also studied through different doping decorations.
Article
Materials Science, Composites
Antoine Dib, Nicholas Fantuzzi, Jacopo Agnelli, Lorenzo Paleari, Mario Bragaglia, Francesca Nanni, Aldo Pierattini
Summary: This study aims to investigate the homogenization of four different types of plastics: virgin polypropylene, recycled polypropylene, recycled high-density polyethylene, and recycled low-density polyethylene. It also focuses on developing a homogenization methodology for multimaterial plastics reinforced with carbon nanotubes and studying the Melt Flow Index of various mixtures of recycled plastics. Furthermore, the research explores the incorporation of nanoparticles to enhance the mechanical properties of these novel polymers.
POLYMER COMPOSITES
(2023)
Article
Engineering, Civil
Aditya Vidwans, Patrizia Trovalusci, Nicholas Fantuzzi, Jose A. F. O. Correia
Summary: In steel structures, lightweight design is a significant focus, which aims to reduce the dead load while maintaining structural safety and performance. The development of steel aluminum foam sandwich panels using modern manufacturing technology provides a new possibility for achieving lightweight structures. This study assesses and understands the behavior of the sandwich panel under in-plane compression or flexure by applying column buckling theory and modifying Euler's buckling formula. The modified analytical expression is validated through finite element simulation considering different material models and geometric imperfections. The results confirm that the modified Euler's formula can be effectively used to predict the load-carrying capacity of a sandwich panel.
Article
Materials Science, Composites
M. Avey, N. Fantuzzi, A. H. Sofiyev, A. D. Zamanov, Y. N. Hasanov, E. Schnack
Summary: This study investigates the stability behavior of multilayer cylindrical shells made of functionally graded nanocomposite layers subjected to lateral pressure in thermal environments. The material properties of nanocomposite layers are obtained from molecular dynamics simulations and the governing equations are solved using shear deformation theory and the Galerkin procedure to determine the lateral critical pressure.
COMPOSITES PART C: OPEN ACCESS
(2023)
Article
Mathematics
Mahmure Avey, Nicholas Fantuzzi, Abdullah H. Sofiyev
Summary: The stability behavior of inhomogeneous nanocomposite cylindrical shells in thermal environments is investigated using the first-order shear deformation theory. Both homogeneous and heterogeneous nanocomposite materials are considered, based on carbon nanotube-reinforced polymer. The critical combined loads for different structures are determined by solving the derived partial differential equations using the Galerkin procedure, and the proposed formulation is tested for reliability against finite element and numerical methods in the literature.
Article
Engineering, Mechanical
Bo Yang, Michele Bacciocchi, Nicholas Fantuzzi, Raimondo Luciano, Francesco Fabbrocino
Summary: This paper investigates the wave propagation characteristics in periodic nano-waveguides using the second strain gradient theory and wave finite element method. The displacement field is determined by element discretization and six quintic Hermite polynomial interpolating functions. By applying Hamilton's principle, the weak form and global dynamic stiffness matrix are obtained. The eigenvalue problems are solved using the wave finite element method to analyze the two-dimensional free wave propagation properties, including the dispersion relation and band structure.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Engineering, Multidisciplinary
A. H. Sofiyev, N. Fantuzzi
Summary: The aim of this study is to propose a new approach for the analytical solution to the vibration and stability problem of clamped sandwich cylindrical shells covered by functionally graded coatings, under an axial compressive load using the framework of shear deformation theory. The modeling of the mechanical properties of FG coated SCSs with various configurations is performed, and the constitutive relations and basic equations are derived based on modified Donnell type theory. The accuracy of the obtained results is confirmed, and the influences of coating profiles, volume fractions, and layer arrangement variations on the critical parameters are investigated for three different shear stress functions.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Mechanics
Rawan Aqel, Patrick Severson, Rani Elhajjar
Summary: A novel core splice joint configuration for composite sandwich structures is studied and proposed to improve the strength and toughness. Experimental and numerical efforts show that this configuration can significantly increase the ultimate strength by 13% to 51% and the toughness by 2% to 35%.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Xianheng Wang, Cong Chen, Jinsong Zhang, Xinming Qiu
Summary: In this paper, a new form-finding method based on spatial elastica model (FMSE) is proposed for elastic gridshells. The method integrates the deformations of elastic rods into the overall deformation of the gridshell, and solves a set of transcendental equations using the quasi-Newton method to ensure the deformation satisfies the given boundary conditions. The method is validated through experiments and expected to have potential applications in the investigations of elastic gridshells.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Hao Huang, Zitong Guo, Zhongde Shan, Zheng Sun, Jianhua Liu, Dong Wang, Wang Wang, Jiale Liu, Chenchen Tan
Summary: The conventional evaluation of 3D braided composites' mechanical properties through numerical and experimental methodologies hinders material application due to the expenses, time constraints, and laborious efforts involved. This study establishes a multi-scale finite element model and a surrogate model for predicting the elastic properties of 3D4D rotary braided composites with voids. By optimizing a neural network model, the results are validated and provide valuable insights into the microstructure and properties of these composites.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Xinyu Li, Hao Zhang, Haiyang Yang, Junrong Luo, Zhongmin Xiao, Hongshuai Lei
Summary: Due to their excellent mechanical properties and design flexibility, fluted-core composite sandwich structures have gained significant attention in aerospace and rail transit applications. This study investigated the free-vibration characteristics and optimized design of composite fluted-core sandwich cylinders through theoretical models and experimental tests.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Chao Li, Chunzheng Duan, Xiaodong Tian, Chao Wang
Summary: A mechanistic model considering the bottom edge cutting effect and the anisotropic characteristics of the material is proposed in this paper to accurately predict cutting forces. The model was validated through a series of milling experiments and can be used to predict the cutting force of various parts of the cutter and any feed direction.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Camila Sanches Schimidt, Leopoldo Pisanelli Rodrigues de Oliveira, Carlos De Marqui Jr
Summary: This work investigates the vibro-acoustic performance of graded piezoelectric metamaterial plates. The study shows that piezoelectric metamaterial plates with reconfigurable properties can provide enhanced vibration and sound power attenuation.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Jun Ke, Li-jie Liu, Zhen-yu Wu, Zhong-ping Le, Luo Bao, Dong-wei Luo
Summary: Compared with other green natural fibers, ramie has higher mechanical properties and lower cost. In this study, ramie and glass fiber are made into composite circular tubes. The results show that the hybrid circular tube with ramie and glass fiber has improved torsional mechanical properties and reduced weight and cost. The failure mechanisms are affected by the loading direction and the content of each fiber.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Natalia Pingaro, Gabriele Milani
Summary: This paper proposes an enhanced analytical model for predicting the behavior of FRCM samples tested under standard tensile tests. The model takes into account the interaction between fibers and matrix through the interface, and assumes different material properties at different phases. By solving a second order linear differential equation, an analytical solution can be obtained. The model is validated with experimental data and shows good predictability.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Jialiang Fan, Anastasios P. Vassilopoulos, Veronique Michaud
Summary: This article investigates the effects of voids, joint geometry, and test conditions on the fracture performance of thick adhesive Double Cantilever Beam (DCB) joints. It concludes that grooved DCB joints with low void content tested at low displacement rates showed stable crack propagation without significant crack path deviation.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Auwalu I. Mohammed, Kaarthikeyan Raghupathy, Osvaldo De Victoria Garcia Baltazar, Lawson Onokpasah, Roger Carvalho, Anders Mogensen, Farzaneh Hassani, James Njuguna
Summary: This study investigates the performance of composite pressure vessels under damaged and undamaged conditions, providing insights into their reliability and residual strength capabilities. The results demonstrate that the damage profile and its effect on compressive strength are similar between damaged and non-damaged cylinders. When subjected to quasi-static compression, the polyethylene liner absorbs enough elastic strain energy to recover without plastic deformation. Additionally, quasi-static compression has little to no influence on the axial strength of the cylinders. The damage characterization reveals fiber breakage, delamination, local buckling, and brooming failure. This study has direct implications for the safety design tolerances, manufacturing strategies, and operational failure conditions of composite overwrapped pressure vessels (COPVs).
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Muhammad Irfan Shirazi, Samir Khatir, Djilali Boutchicha, Magd Abdel Wahab
Summary: Structural health monitoring is important to ensure the safety of components and structures. This study proposes a method using finite element models and 1D-CNN network to extract and classify vibration responses for crack detection. The results show that the proposed approach is effective in real-time damage detection.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Maryam Mirsalehi, Kiarash Kianpour, Sharif Shahbeyk, Mohammad Bakhshi
Summary: This study comprehensively investigates the one-way response of 3D-woven sandwich panels (3DWSPs) and their interfering parameters, providing interpretation of elastic and failure results, failure maps, and reliable theoretical models for linear elastic response and observed failure mechanisms.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Yiming Zhao, Zhonggang Wang, Zhigang Yang, Bin Qin
Summary: The paper proposes a Ritz and statistical energy analysis (Ritz SEA) hybrid method for calculating rectangular plate acoustic vibration coupling in the mid-frequency range. This method combines the fast convergence and ability to handle arbitrary boundary conditions of the Ritz method with the power flow equation of the statistical energy analysis method. The results show that this approach effectively filters out random fluctuations in mid-frequency domains while demonstrating exceptional stability and precision.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Joao Henrique Fonseca, Woojung Jang, Dosuck Han, Naksoo Kim, Hyungyil Lee
Summary: This study addresses the enhancement of an injection-molded fiber-reinforced plastic / metal hybrid automotive structure and its plastic injection molding process through the integration of the finite element method, artificial intelligence, and evolutionary search methods. Experimental validation of finite element models, the generation of a database through orthogonal array and Latin hypercube methods, and the training of artificial neural networks are conducted. The genetic optimization algorithm is then applied to identify optimal process parameters. The results show significant reduction in product warpage and manufacturing time while maintaining structural strength, contributing to the advancement of composite automotive structures with superior quality.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Alessandro Vescovini, Carina Xiaochen Li, Javier Paz Mendez, Bo Cheng Jin, Andrea Manes, Chiara Bisagni
Summary: This paper presents a study on six single-stringer specimens manufactured using the card-sliding technique with non-crimp fabrics and adopting a Double-Double (DD) stacking sequence. The specimens were tested under compression loading conditions to investigate post-buckling and failure in aerospace structures. Experimental results and numerical simulations were compared to analyze the behavior and failure modes of the specimens. The study found promising evidence of a viable solution to optimize aeronautical structures and enhance resistance to skin-stringer separation, particularly with the use of tapered flanges.
COMPOSITE STRUCTURES
(2024)
