Article
Engineering, Mechanical
Pham Van Vinh
Summary: This paper presents a comprehensive investigation of bi-directional functionally graded sandwich plates using higher-order shear deformation theory and finite element method for the first time. The results indicate that the variation in material ingredients and properties, as well as the thickness ratio of layers, significantly affect the behavior of these plates.
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
(2022)
Article
Mechanics
M. C. Kiran
Summary: The current article investigates the thermo-mechanical buckling behavior of porous functionally graded (FG) plates of rectangular and skew geometry. The modified rule of mixture and power law distribution are incorporated to establish the governing equations, and finite element meshing is introduced using four node rectangular elements. The stability analysis is performed by computing the critical buckling load for structures subjected to compressive and thermal loads, and the impact of various parameters on the stability characteristics is thoroughly investigated.
MECHANICS BASED DESIGN OF STRUCTURES AND MACHINES
(2023)
Article
Mechanics
Shanhong Ren, Changzheng Cheng, Bo Yu, Zeng Meng, Bowei Huang, Qiaoguo Wu
Summary: This paper proposes new refined higher-order shear deformation theories (RHSDTs) for functionally graded plates. The theories describe the initial displacement using higher-order theories and determine the in-plane stress fields using geometrical and constitutive relations. By incorporating tangential stress-free conditions and defining new variables, the transverse shear stress expressions without differential variables are obtained. These refined theories can better predict the mechanical responses of functionally graded plates.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2022)
Article
Engineering, Civil
Van-Thien Tran, Trung-Kien Nguyen, Phong T. T. Nguyen, Thuc P. Vo
Summary: This paper proposes a unified higher-order shear deformation theory for stochastic vibration and buckling analysis of functionally graded microplates. The effects of different parameters on the critical buckling loads and natural frequencies of the microplates are investigated using the polynomial chaos expansion method and probability distribution. The results demonstrate the efficiency and accuracy of the proposed approach.
THIN-WALLED STRUCTURES
(2022)
Article
Mechanics
Aref Mehditabar, Saeid Ansari Sadrabadi, Jason Walker
Summary: This study investigates the thermal buckling responses of a functionally graded cylindrical microshell. The material properties of the microshell are graded through the thickness based on a simple power-law distribution. The governing equations and boundary conditions are derived using higher-order shear deformation theory. The size dependence of the microshell is characterized using the modified couple stress theory. Two types of differential quadrature method are employed to solve the equations and obtain the critical buckling temperature. The numerical technique shows fast convergence and is validated against available data. Parametric studies are conducted to analyze the influence of various factors on the critical buckling temperature.
MECHANICS BASED DESIGN OF STRUCTURES AND MACHINES
(2023)
Article
Materials Science, Multidisciplinary
Zhenghao Yang, Erkan Oterkus, Selda Oterkus
Summary: A novel peridynamic model for higher order functional graded plates is presented in this paper, eliminating the use of shear correction factors and demonstrating its capabilities through various benchmark problems. The results are well-validated by comparing them with their finite element analysis counterparts.
MATHEMATICS AND MECHANICS OF SOLIDS
(2021)
Article
Construction & Building Technology
Fatemeh Abbaspour, Hadi Arvin
Summary: This paper investigates the buckling analysis of functionally graded graphene platelets micro plates with piezoelectric layers under external applied voltage. The study shows that the distribution pattern of graphene platelets has minimal effect on thermal buckling strength, while mechanical buckling strength is improved. Additionally, negative and positive voltages have significant effects on the stability and critical buckling load of the micro plate.
STEEL AND COMPOSITE STRUCTURES
(2021)
Article
Engineering, Mechanical
Ali Seyfi, Mohammadreza Maleki, Zengtao Chen, Farzad Ebrahimi
Summary: This study investigates the influence of porosity modeling on the dynamic response of functionally graded material plates within a new, higher-order shear deformation theory. The results show good agreement with previous literature, and the effects of various parameters on the dimensionless frequency are examined in detail.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
(2022)
Article
Mechanics
Pham Van Vinh, Nguyen Van Chinh, Abdelouahed Tounsi
Summary: This paper investigates the static bending and buckling behaviors of bi-directional functionally graded (BFG) plates with porosity. An improved first-order shear deformation theory and a new four-node quadrilateral plate element IMQ4 are developed for analysis. New numerical results on the flexural and buckling behaviors of BFG plates are obtained through a deep parametric study.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2022)
Article
Engineering, Civil
Pham Van Vinh, Mehmet Avcar, Mohamed-Ouejdi Belarbi, Abdelouahed Tounsi, Le Quang Huy
Summary: In this paper, a new C0 four-node quadrilateral plate element (MiQ4) is proposed for the static bending analysis of functionally graded (FG) plates. It is based on a C0 higher-order shear deformation theory and has accurate results and fast convergence rate. The element is insensitive to distorted mesh and does not require shear correction coefficients or reduced integration. It also avoids shear-locking phenomenon and spurious deformation or hourglass modes.
Article
Engineering, Civil
Mohit Dhuria, Neeraj Grover, Kavita Goyal
Summary: This study investigates the effect of porosity distribution on static and buckling responses of an FG porous plate, revealing that inverse hyperbolic shear deformation theory eliminates the need for shear correction factors while accounting for non-linear variations. The use of power-law to describe material properties variation shows significant influence of porosity parameter, power-law exponent, and other factors on plate response.
Article
Engineering, Civil
Tuan H. A. Nguyen, Jarkko Niiranen
Summary: This article introduces an effective computational approach that incorporates a quasi-brittle damage model into the isogeometric analysis of plates made of functionally graded materials. The use of a coupling nonlocal equivalent strain field on the plate neutral surface controls softening behavior, enabling the use of a single damage parameter over each plate cross-section. The discretization of the problem domain is based on basis functions generated from non-uniform rational B-splines (NURBS), allowing accurate resolution of local features such as fracture damage zones.
THIN-WALLED STRUCTURES
(2021)
Article
Construction & Building Technology
J. R. Cho
Summary: This paper focuses on the numerical buckling analysis of metal-ceramic FG plates resting on an elastic foundation. The buckling problem is formulated based on the neutral surface and the (1,1,0) hierarchical model, and numerically approximated using the 2-D natural element method (NEM). The developed numerical method is validated by comparing the results with reference solutions, and it is then used to investigate the critical buckling loads of metal-ceramic FG plates parametrically.
STEEL AND 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
Computer Science, Interdisciplinary Applications
Ahmed Bakoura, Fouad Bourada, Abdelmoumen Anis Bousahla, Abdeldjebbar Tounsi, Kouider Halim Benrahou, Abdelouahed Tounsi, Mesfer Mohammad Al-Zahrani, S. R. Mahmoud
Summary: This article presents a mechanical buckling analysis of simply-supported functionally graded plates using HSDT and stress function method, showing that the transverse shear stresses vary parabolically through the thickness. The numerical results indicate the influences of power law index and geometric ratio on the critical buckling load.
COMPUTERS AND CONCRETE
(2021)
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)