Article
Engineering, Civil
X. Li, Y. Qin, Z. H. Zhou
Summary: This paper investigates the coupled vibration behavior of rotating composite laminated beams under hygrothermal conditions. The governing equations for the coupled vibration considering hygrothermal effects and rotating motion are derived using the d'Alembert principle. The flapwise-edgewise coupled vibration characteristics of the beams are obtained using the Green's function method. A comprehensive parametric study on the natural frequencies of flapwise and edgewise bending vibrations is then performed. The results show that the flapwise-edgewise coupling factors are crucial for vibration analysis of high-speed rotating structures. Temperature variation, moisture concentration, rotating speed, and design parameters significantly influence the coupled vibration characteristics of the beams, and thermal expansion deformation cannot be neglected.
INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS
(2023)
Article
Engineering, Civil
Xiaoxia Zhang, Zhong Luo, Fengxia He, Bing Yu
Summary: A similarity method is proposed for rotating composite blades in a thermal environment to address the issues of difficulty, time consumption, high cost, and risk in dynamic testing under high temperatures. Scaling laws are derived for thin-walled composite plates based on their dynamic models, and the applicability of these scaling laws is demonstrated in the similitude design of composite blades. The dynamic model considers thermal stress and centrifugal stiffening effect. Analytical calculations show that scaled models at relatively low temperatures can accurately replicate the dynamic characteristics of their corresponding prototypes at high temperatures when accounting for temperature change and rotational speed scaling.
THIN-WALLED STRUCTURES
(2023)
Article
Engineering, Civil
Ying Qin, Haiwei Lv, Yinghui Li, Hao Dong
Summary: This work investigates the nonlinear parametric resonance of a composite thin-walled beam under the combined effects of aerodynamic force and hygrothermal environment caused by a time-dependent rotating speed. The dynamical model of the system is obtained based on existing research, and the Galerkin method is used to discretize the nonlinear partial differential equation of the system. The multiple scales method is employed to analyze the low-frequency and high-frequency resonances of the system, discussing the influence of various parameters on the amplitude-frequency responses and the unstable region.
ENGINEERING STRUCTURES
(2023)
Article
Mechanics
Liang Li, Jian-Qiang Wu, Wei-Dong Zhu, Long Wang, Lai-Wang Jing, Guang-Hong Miao, Ying-Hui Li
Summary: This study aims to establish a comprehensive analytical model for rotating composite thin-walled beams subjected to hygrothermal effects. The model considers various factors such as temperature, moisture absorption, ply angle, and nonlinearity, to better understand the mechanical behavior of the structure and aid numerical simulations and experimental tests.
COMPOSITE STRUCTURES
(2021)
Article
Mechanics
Xiao Li
Summary: This paper focuses on the nonlinear parametric resonance behaviors of rotating composite laminated cylindrical shells subjected to periodic axial loads and hygrothermal environment. By deriving nonlinear dynamic equations and steady state response formulation, the study analyzes the stability conditions and vibration characteristics of the shell under the combined effect of dynamic axial loads and hygrothermal expansion deformation.
COMPOSITE STRUCTURES
(2021)
Article
Materials Science, Composites
Ananda Babu Arumugam, Rajeshkumar Selvaraj, Mageshwaran Subramani, Ramesh Babu Vemuluri
Summary: In this study, the vibration and instability characteristics of rotating carbon nanotube reinforced magnetorheological elastomer embedded sandwich composite plates were investigated using finite element method. The efficacy of the method was verified by comparing the natural frequencies assessed using experimental studies. The research findings show that the CNT reinforcement significantly improves the stiffness and damping of the composite plates and reduces the instability regions.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Physical
Xiao Li, Wentao Jiang, Xiaochao Chen, Zhihong Zhou
Summary: This study focuses on the nonlinear vibration of rotating composite laminated cylindrical shells under hygrothermal environment and radial harmonic excitation. Nonlinear partial differential equations of the shells are derived considering various factors, and analytical solutions are obtained using the Galerkin approach and multiple scales method. The results suggest interesting insights into amplitude-frequency relations and nonlinear dynamic responses of the shells, particularly in terms of the combined effects of temperature and moisture concentration on nonlinear resonance behavior.
ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES
(2021)
Article
Materials Science, Characterization & Testing
Huseyin Dal, Ali Osman Kurt, Seda Yildiz
Summary: This study investigates the vibration characteristics of polymer matrix composite (PMC) materials using the experimental modal test method. The results show that the most influential parameter on the vibration properties is the gravel ratio.
Article
Engineering, Multidisciplinary
Dongyang Chen, Chaojie Gu, Pier Marzocca, Jiadong Yang, Guang Pan
Summary: The vibration characteristics of rotating blades are crucial for the structural reliability of rotating machinery. This paper proposes the Transfer Matrix Method of Multibody System (MSTMM) to study the vibration characteristics of single rotating beam and rotor-stator coupled system. The influence of blade rotation is illustrated by computing the vibration characteristics at varying rotating speeds. The modeling process is simple and rapid, and can be applied to compute the bending-torsional frequencies of helicopter and wind turbine blades.
APPLIED MATHEMATICAL MODELLING
(2022)
Article
Mechanics
Peng-Fei Dang, Zheng-Xin Yang, Yang-Yang Yan, Qing-Kai Han, Zhi-Hao Jin
Summary: This paper studied the influence of temperature rise on the vibration characteristics of rotating composite blades with thermal barrier coatings (TBCs) using dynamic model and nonlinear vibration analysis. The results show that the temperature rise enhances the softening-type nonlinearity of rotating blades.
COMPOSITE STRUCTURES
(2021)
Article
Materials Science, Composites
Manuel George, Mattipally Prasad, Rajeshkumar Selvaraj, N. Sakthieswaran, J. Sivakumar, Amal M. Al-Mohaimeed, Tse-Wei Chen, Mohammed Al-Bahrani, Rey Y. Capangpangan, Arnold C. Alguno
Summary: In this study, the dynamic behavior of rotating CFRP composite tapered plates reinforced with graphene nanoparticles was investigated using finite element analysis. The mechanical properties of CFRP laminates containing different wt% of graphene were evaluated using ASTM standard tests. A first-order shear deformation theory (FSDT) based finite element model was developed to analyze the natural frequencies of the graphene reinforced CFRP plates. Experimental dynamic analysis was also conducted on the composites. Parametric analysis was performed to study the influence of various factors on the dynamic responses of the CFRP plates.
POLYMER COMPOSITES
(2023)
Article
Mechanics
Jiang Xu, Zhichun Yang, Jie Yang, Yinghui Li
Summary: This paper investigates the influence of boundary relaxation on the free vibration characteristics of a rotating composite laminated Timoshenko beam. Artificial springs are used to simulate the relaxed boundary conditions, adjusting the stiffness of the springs to obtain various relaxation conditions, with relaxation parameters introduced to evaluate the extent of boundary relaxation.
COMPOSITE STRUCTURES
(2021)
Article
Engineering, Civil
Serkan Guler
Summary: This study focused on the free vibration analyses of centrifugally stiffened cracked beams made of functionally graded materials in the axial direction. The Rayleigh-Ritz method was used to analyze the influence of various parameters on natural frequencies. Results indicated that an increase in the ratio of crack depth to thickness led to a decrease in fundamental frequency parameters, with the highest natural frequency droop near the root of the beam for flap-wise and chord-wise vibrations.
ENGINEERING STRUCTURES
(2021)
Article
Mechanics
Binlin Ma, Yu Feng, Yuting He, Fei Yang, Teng Zhang, Xianghong Fan
Summary: The study investigates the effects of hygrothermal conditions on the shear behaviors of composite stiffened panels, establishing a new moisture absorption model and proposing a simplified, semi-analytical method to predict critical buckling load. Hygrothermal aging leads to structural changes and reduced load-bearing capacity, with aged specimens showing decreased buckling and failure loads. The proposed method shows good agreement with FEM and experimental results.
COMPOSITE STRUCTURES
(2021)
Article
Construction & Building Technology
Ozge Ozdemir, Ismail Esen, Huseyin Ural
Summary: This paper focuses on the free vibration behavior of rotating composite beams reinforced with carbon nanotubes under uniform thermal loads. By considering different distribution patterns of carbon nanotubes, a new finite element formulation is proposed for the first time. The effects of various parameters and the positive influence of carbon nanotube addition in improving the dynamic performance of the system are presented.
STEEL AND COMPOSITE STRUCTURES
(2023)
Article
Engineering, Mechanical
X. Li, Y. H. Li, T. F. Xie
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2019)
Article
Materials Science, Multidisciplinary
Xuan Ling Zhang, Xiao Chao Chen, Echuan Yang, Hai Feng Li, Jian Bo Liu, Ying Hui Li
JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES
(2019)
Article
Mechanics
B. C. Lin, T. F. Xie, M. Xu, Y. H. Li, J. Yang
COMPOSITE STRUCTURES
(2019)
Article
Engineering, Mechanical
Xiaochao Chen, Xuanling Zhang, Yixin Lu, Yinghui Li
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2019)
Article
Chemistry, Physical
B. C. Lin, Y. Qin, Y. H. Li, J. Yang
ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES
(2019)
Article
Engineering, Multidisciplinary
Y. H. Dong, B. Zhu, Y. Wang, L. W. He, Y. H. Li, J. Yang
APPLIED MATHEMATICAL MODELLING
(2019)
Article
Engineering, Mechanical
X. Zhao, F. J. N. Iegaink, W. D. Zhu, Y. H. Li
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2019)
Article
Engineering, Multidisciplinary
Bo Zhu, Xiaochao Chen, Youheng Dong, Yinghui Li
APPLIED MATHEMATICAL MODELLING
(2019)
Article
Mechanics
X. L. Zhang, Q. Xu, X. Zhao, Y. H. Li, J. Yang
COMPOSITE STRUCTURES
(2020)
Article
Engineering, Mechanical
Youheng Dong, Xiangyu Li, Kang Gao, Yinghui Li, Jie Yang
NONLINEAR DYNAMICS
(2020)
Article
Acoustics
B. Chen, X. Zhao, Y. H. Li, Y. Guo
Article
Mechanics
Chang-Cheng Du, Ying-Hui Li
COMPOSITE STRUCTURES
(2020)
Article
Acoustics
X. Zhao, B. Chen, Y. H. Li, W. D. Zhu, F. J. Nkiegaing, Y. B. Shao
JOURNAL OF SOUND AND VIBRATION
(2020)
Article
Physics, Multidisciplinary
Yukang Yang, Youheng Dong, Yinghui Li
EUROPEAN PHYSICAL JOURNAL PLUS
(2020)
Article
Engineering, Multidisciplinary
Youheng Dong, Yinghui Li, Xiangyu Li, Jie Yang
APPLIED MATHEMATICAL MODELLING
(2020)
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)
