Article
Engineering, Mechanical
Marco Di Sciuva, Matteo Sorrenti
Summary: This paper numerically evaluates the performance of the Refined Zigzag Theory in analyzing functionally graded material plates, comparing it with various other theories. The results show that the Refined Zigzag Theory generally predicts the global and local response of functionally graded material sandwich plates more accurately than other theories.
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
(2021)
Article
Engineering, Mechanical
Mohammad Naghavi, Saeid Sarrami-Foroushani, Fatemeh Azhari
Summary: This study performs static analysis of functionally graded (FG) sandwich plates using the finite strip method based on the refined plate theory (RPT). Different types of FG sandwich plates are considered and their differential equations are obtained using Hamilton's principle. The proposed method is fast, accurate, and capable of modeling various boundary conditions.
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
(2022)
Article
Mechanics
Peng Shi
Summary: This study investigates the static bending, free vibration, and buckling behaviors of functionally graded carbon nanotube-reinforced composite plates using isogeometric analysis. The accuracy of the method is validated through comparison with published literature. Additionally, the effects of CNT volume fractions, distributions, geometrical parameters, and boundary conditions on the plates are explored.
ARCHIVE OF APPLIED MECHANICS
(2022)
Article
Mechanics
Ngoc-Duong Nguyen, Thien-Nhan Nguyen, Trung-Kien Nguyen, Thuc P. Vo
Summary: This paper introduces a simple two-variable shear deformation theory for functionally graded porous beams and investigates the effects of various factors on the frequency, buckling load, deflection, and stress of the beams. The theory considers different boundary conditions and porosity parameters to predict the behaviors of the beams.
COMPOSITE STRUCTURES
(2022)
Article
Polymer Science
Jin-Rae Cho, Young-Ju Ahn
Summary: This paper numerically investigates the mechanical behavior of a functionally graded carbon nanotube-reinforced composite plate. The displacement is approximated using a hierarchical model and 2-D meshfree natural element method, and the effective elastic properties are determined by referring to MD simulation and the linear rule of mixtures. The study examines the effects of CNT volume fraction and distribution, plate geometry, and boundary conditions on the bending, vibration, and buckling behaviors of FG-CNTRC plates. The results highlight the significant dependence of the mechanical behavior on these parameters.
Article
Mathematics
Ashraf M. Zenkour, Maryam H. Aljadani
Summary: A quasi-3D refined theory is utilized to investigate the buckling response of functionally graded porous plates, presenting three models and discussing the effect of various parameters. The accuracy of the theory is verified through analytical investigations, showing more accurate results compared to other shear deformation theories.
Article
Mechanics
Ngoc-Duong Nguyen, Trung-Kien Nguyen, Thuc P. Vo, Lieu B. Nguyen
Summary: This article proposes static, free vibration, and buckling analysis of thin-walled functionally graded (FG) sandwich and composite channel-section beams. Ritz's approximation functions are developed to solve the characteristic problems and numerical examples are presented to demonstrate the effects of various factors on the beams' performance.
MECHANICS BASED DESIGN OF STRUCTURES AND MACHINES
(2023)
Article
Construction & Building Technology
Fethi Mouaici, Abed Bouadi, Mohamed Bendaida, Kada Draiche, Abdelmoumen Anis Bousahla, Fouad Bourada, Abdelouahed Tounsi, Mofareh Hassan Ghazwani, Ali Alnujaie
Summary: This paper develops an accurate kinematic model to study the mechanical response of functionally graded sandwich beams, covering bending, buckling, and free vibration problems. The model uses a new refined shear deformation beam theory and provides good accuracy, considering a nonlinear transverse shear deformation shape function. The numerical computations using the model are compared with other beam theories to confirm its performance and verify the accuracy of the kinematic model.
STEEL AND COMPOSITE STRUCTURES
(2022)
Article
Engineering, Civil
Junsheng Zhu, Zhigeng Fang, Xiaojun Liu, Jingru Zhang, Yaser Kiani
Summary: This study analyzes the free vibration of skew sandwich plates. The sandwich plate consists of three layers, with a metal foam core and pure metal faces. Different types of functionally graded patterns are assumed for the distribution of pores in the core. The governing equations are obtained using the first order shear deformation theory and transformed to an oblique coordinate system. The Ritz method with Chebyshev polynomials is used to represent the shape functions and solve the eigenvalue problem. The results show that parameters such as pore patterns and size, boundary conditions, skew angle, host to face thickness ratio, and aspect ratio have significant effects on the natural frequencies of the plate.
Article
Engineering, Multidisciplinary
Pham Van Vinh, Le Quang Huy
Summary: This study establishes a finite element model based on a new hyperbolic sheareformation theory to investigate the static bending, free vibration, and buckling of functionally graded sandwich plates with porosity. The results show that the distribution of porosity plays a significant role in the mechanical behavior of functionally graded sandwich plates.
DEFENCE TECHNOLOGY
(2022)
Article
Chemistry, Physical
Dongdong Li, He Zhu, Xiaojing Gong
Summary: This paper presents an analytical solution for the thermomechanical buckling of functionally graded material sandwich plates. The results show the influence of various parameters on the response of the sandwich plates. The relationship between mechanical load and temperature increment under different conditions for FGM sandwich plates is studied.
Article
Mechanics
Buntoeng Srikarun, Wachirawit Songsuwan, Nuttawit Wattanasakulpong
Summary: This study investigates the linear and nonlinear bending behaviors of sandwich beams with functionally graded cores under various distributed loads. The formulation used is based on Reddy's theory and von Karman's nonlinear strain-displacement relations. Numerically stable functions for displacement fields are generated using the Gram-Schmidt orthogonalization procedure, and linear and nonlinear bending results are found using the Ritz method and iterative technique. The accuracy of the solutions is validated, and new results based on different factors like porosity coefficient and loading types are presented for future studies.
COMPOSITE STRUCTURES
(2021)
Article
Mechanics
Qilin Jin, Zhen Wu, Yu Fu, Rui Ma, Jie Zhou, Zhengliang Liu
Summary: The study focuses on the mechanical properties of carbon nanotube reinforced composite materials and their stress analysis under electro-mechanical loadings. By proposing a refined plate theory and considering factors such as CNT distribution, the model's accuracy is effectively improved.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2021)
Article
Mechanics
Xiuhua Chen, Hui-Shen Shen, Xu-Hao Huang
Summary: This study investigates the thermo-mechanical postbuckling behaviors of sandwich plates with auxetic GRMMC core, revealing significant influences of FG pattern, thickness ratio, and foundation stiffness on compressive and thermal postbuckling behaviors.
COMPOSITE STRUCTURES
(2022)
Article
Engineering, Civil
Nuttawit Wattanasakulpong, Suppakit Eiadtrong
Summary: This study examined the transient or dynamic response of sandwich plates with a functionally graded porous core under time-dependent loads. The results of the numerical experiments showed that the plates with a larger number of internal pores had less deflection under dynamic loads.
INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS
(2023)
Article
Engineering, Mechanical
Luigi Iurlaro, Marco Gherlone, Marco Di Sciuva
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
(2014)
Article
Engineering, Mechanical
Marco Di Sciuva, Matteo Sorrenti
Summary: This paper numerically evaluates the performance of the Refined Zigzag Theory in analyzing functionally graded material plates, comparing it with various other theories. The results show that the Refined Zigzag Theory generally predicts the global and local response of functionally graded material sandwich plates more accurately than other theories.
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
(2021)
Article
Computer Science, Interdisciplinary Applications
M. Sorrenti, M. Di Sciuva, A. Tessler
Summary: This paper presents a locking-free four-node element based on Refined Zigzag Theory for laminated composite and sandwich plates. Through numerical studies, it is concluded that the element demonstrates high accuracy and performance advantages in modeling ultra-thin plates.
COMPUTERS & STRUCTURES
(2021)
Article
Mechanics
M. Sorrenti, M. Di Sciuva
Summary: This paper presents an enhanced Refined Zigzag Theory (RZT) for the analysis of multilayered composite plates, which allows the coupling effect of in-plane displacements for anisotropic multilayered plates. The enhanced zigzag functions extend the applicability of RZT to the study of general angle-ply multilayered structures.
JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME
(2021)
Article
Mechanics
M. Sorrenti, M. Di Sciuva, J. Majak, F. Auriemma
Summary: This paper reviews Haar wavelet methods and applies the higher-order Haar wavelet method to study the behavior of multilayered composite beams. The results are compared with other numerical methods to assess performance and validated against exact solutions. The conclusion is that the Higher-Order Haar Wavelet Method is accurate and computationally competitive.
MECHANICS OF COMPOSITE MATERIALS
(2021)
Article
Multidisciplinary Sciences
Marco Sorrenti, Marco Gherlone, Matteo Di Sciuva
Summary: The study evaluates the enhanced Refined Zigzag Theory (en-RZT) for the buckling analysis of angle-ply multilayered and sandwich plates, demonstrating high accuracy in predicting buckling loads. Through a parametric analysis, the research explores the influence of various design parameters on the buckling loads.
PROCEEDINGS OF THE ESTONIAN ACADEMY OF SCIENCES
(2022)
Article
Mechanics
M. Sorrenti, M. Gherlone
Summary: In this paper, a new mixed model based on the enhanced Refined Zigzag Theory is formulated for thick multilayered composite plates. The kinematics assumptions and the reduced set of kinematic variables are discussed. The transverse shear stresses profile and the governing equations are derived using a new set of strain variables and the Hellinger-Reissner functional. Finally, the proposed model's predictive capabilities are assessed by comparing the results with exact three-dimensional solutions.
COMPOSITE STRUCTURES
(2023)
Article
Materials Science, Composites
Marco Di Sciuva, Matteo Sorrenti
JOURNAL OF COMPOSITES SCIENCE
(2019)
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)