Article
Engineering, Civil
F. H. H. Al Mukahal, Mohammed Sobhy
Summary: A novel shear and normal deformations theory is presented to study the wave propagation and free vibration of three-layer sandwich curved beams subjected to elevated temperature and moisture environments on a viscoelastic foundation. Various material combinations and distribution rules are considered, with numerical methods used for theoretical analysis and parametric studies exploring the effects of different factors.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2021)
Article
Acoustics
Mohammad Mosayyebi, Faramarz Ashenai Ghasemi, Reza Kolahchi
Summary: This paper discusses the wave propagation of a magnetorheological fluid micro sandwich plate with magnetostrictive face sheets embedded in the Kerr foundation. The carbon nanotubes in the face sheets are functionally graded along their thickness in various patterns. The properties of the magnetostrictive layer and the influence of small-scale parameter are considered. Analytical solutions are utilized to obtain the phase speed and frequencies of the system.
JOURNAL OF VIBRATION AND CONTROL
(2023)
Article
Nanoscience & Nanotechnology
Xinte Wang, Juan Liu, Biao Hu, Zhaonian Li, Bo Zhang
Summary: This study analyzes the wave propagation characteristics of porous functionally graded piezoelectric material (FGPM) nanoshells resting on a viscoelastic foundation. The governing equations are derived using the first-order shear deformation theory and Hamilton's principle, and the motion equations are obtained using the nonlocal strain gradient theory. A parametric investigation reveals that the influence of various parameters on the frequency of waves in the FGPM is thickness-dependent. The findings provide insights for the optimal design of FGPM nanoshells and further research on nanomaterials.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2023)
Article
Materials Science, Multidisciplinary
Mohammed A. Al-Osta
Summary: This study investigates the wave propagation behavior of functionally graded materials (FGM) plates supported by viscoelastic foundations in extreme thermal environments. By considering the temperature-dependent effective properties as functions of position and thermal increase, the governing equations of the FGM plates are obtained using a higher-order shear deformation theory and the Hamilton principle. The results show that introducing metal-ceramic mixtures in the plate lowers the phase velocity, and increasing the temperature deteriorates the foundation and plates, resulting in lower velocity and stiffness.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Mechanics
A. Aladwani, M. Nouh
Summary: The study investigated viscoelastic metadamping in one-dimensional multibandgap metamaterials, finding that strategic damping placement in individual resonators plays a key role in shaping intermediate dispersion branches and dictating the primary and secondary frequency regions of interest, where attenuation is most required.
JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME
(2021)
Article
Mechanics
Mehmet Dorduncu, Akif Kutlu, Erdogan Madenci
Summary: This study presents a finite element formulation for vibration analysis of laminated composite plates based on the Refined Zigzag Theory of order {2,2}. The method considers transverse stretching, eliminates shear correction factors, and is suitable for thick and heterogeneous laminated plates. An adaptive time-stepping algorithm is employed to ensure stability and accuracy in the analysis.
COMPOSITE STRUCTURES
(2022)
Article
Mathematics
Mohammed Sobhy, Fatemah H. H. Al Mukahal
Summary: This paper investigates wave propagation in a new three-layer structure composed of piezoelectromagnetic material reinforced with graphene platelets. The study shows that the geometry of the plates, material distribution, and external electric and magnetic potentials have significant effects on the wave frequency and phase velocity of the lightweight plates.
Article
Engineering, Mechanical
Yunping Zhao, Xiuhui Hou, Shuo Zhang, Tongtong Sun, Lin Du, Zichen Deng
Summary: This paper investigates the dynamic behavior of a piezoelectric-graphene compound asymmetric nanoplate resting on a viscoelastic foundation, considering exposure to thermal environment and transverse harmonic excitation. A dynamic model of the composite nanoplate is established using the Hamilton principle and nonlocal elastic theory. The influences of various factors on the nonlinear vibration of the system are comprehensively analyzed numerically. The results of this study provide a theoretical basis for experimental characterization of the mechanical properties of piezoelectric-graphene composite nanoresonators.
ACTA MECHANICA SINICA
(2023)
Article
Construction & Building Technology
Saeed Tahir, Abdelouahed Tounsi, Abdelbaki Chikh, Mohammed A. Al-Osta, Salah U. Al-Dulaijan, Mesfer M. Al-Zahrani
Summary: This article proposes a seismic design method for low-rise reinforced concrete special moment frame buildings, aiming to make the buildings ductile and able to withstand severe levels of earthquake shaking without collapsing through appropriate sizing and reinforcement detailing.
STEEL AND COMPOSITE STRUCTURES
(2022)
Article
Mechanics
L. H. M. S. Ribeiro, V. F. Dal Poggetto, J. R. F. Arruda
Summary: Vibration must be considered in structural design, and periodic structures can attenuate waves through wave propagation phenomena. The geometric and material properties of the unit cell in periodic structures are crucial for design. Robust optimal design can mitigate the impact of parameter variations on the objective function.
Article
Engineering, Multidisciplinary
Ragab M. Etiwa, Hanaa M. Elabsy, Hesham A. Elkaranshawy
Summary: In this paper, a finite element formulation is developed to analyze impact-induced waves in the collision between a rod and a striking mass. The proposed model considers the rod and the struck mass as one system, providing accurate results for the discontinuity at the arrival of the impact wave. The model has the potential for simulation and analysis of various practical applications, such as nanostructures under impact loads.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Mathematics, Applied
Masoud Javadi, Mohammad Rahmanian
Summary: The study analyzes the nonlinear vibration behavior of fractional Kelvin-Voigt viscoelastic beams on a nonlinear elastic foundation under harmonic excitation, focusing on primary, superharmonic, and subharmonic resonances. The research uses the fractional Kelvin-Voigt constitutive model to describe viscoelastic material behaviors and employs the method of multiple scales and parametric analysis to illustrate the significant impact of the model on frequency-response and amplitude-response.
COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION
(2021)
Article
Construction & Building Technology
M. Alimoradzadeh, S. D. Akbas
Summary: This paper investigates the nonlinear free vibration analysis of a functionally graded beam resting on a nonlinear viscoelastic foundation under uniform temperature rising. The finite strain theory is used to consider the nonlinear strain-displacement relationship. The governing nonlinear dynamic equation is derived based on the finite strain theory using Hamilton's principle. The Galerkin's decomposition technique is used to discretize the equation, which is then solved with the multiple time scale method. The effects of temperature rising, material distribution parameter, and nonlinear viscoelastic foundation parameters on the nonlinear free response and phase trajectory are investigated.
STEEL AND COMPOSITE STRUCTURES
(2022)
Article
Materials Science, Multidisciplinary
Jun Xu, Yandong Chen, Yongpeng Tai, Guodong Shi, Ning Chen
Summary: This study developed a dynamic model of a sandwich beam with viscoelastic coating based on a fractional constitutive equation. The influence of fractional order and size parameters on the dynamic characteristics of the sandwich beam was investigated, and the steady-state frequency response of the laminated beam was calculated. The results can provide a theoretical basis for the size design of laminated beams with damping requirements.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2022)
Article
Mechanics
Mengzhen Li, C. Guedes Soares, Renjun Yan
Summary: This paper introduces a new quasi-3D theory for free vibration analysis of functionally graded plates resting on an elastic foundation. The proposed shear functions satisfy boundary conditions without the use of shear correction factors. Comparisons with other solutions show that trigonometric shear functions are more accurate.
COMPOSITE STRUCTURES
(2021)
Article
Mathematics, Applied
Mohsen Motezaker, Majid Jamali, Reza Kolahchi
JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS
(2020)
Article
Materials Science, Composites
Mohsen Motezaker, Reza Kolahchi, Dipen Kumar Rajak, S. R. Mahmoud
Summary: This study utilizes numerical solutions to investigate the dynamic analysis induced by earthquake load in concrete pipes containing SiO2 nanoparticles wrapped by fiber reinforced polymer (FRP) layer. The research shows that the FRP layer can significantly reduce the dynamic deflection of the concrete pipe.
POLYMER COMPOSITES
(2021)
Article
Materials Science, Multidisciplinary
Mohsen Motezaker, Shaoping Xiao, Amir R. Khoei, Jabbar Ali Zakeri
Summary: This article employs a hierarchical multiscale approach to study frictional sliding contact considering elastohydrodynamic lubrication, analyzing the relative contributions of molecular and continuum models in determining the friction coefficient. The research investigates the effects of hydrocarbon chain lengths, temperature, and sliding velocity on a constant friction coefficient and demonstrates the potential implications of the approach for evaluating tribological damage.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2022)
Article
Engineering, Civil
Mohsen Motezaker, Arameh Eyvazian
STRUCTURAL ENGINEERING AND MECHANICS
(2020)
Article
Construction & Building Technology
Mohsen Motezaker, Arameh Eyvazian
STEEL AND COMPOSITE STRUCTURES
(2020)
Article
Computer Science, Interdisciplinary Applications
Mohsen Motezaker, Reza Kolahchi
COMPUTERS AND CONCRETE
(2017)
Article
Computer Science, Interdisciplinary Applications
Mohsen Motezaker, Reza Kolahchi
COMPUTERS AND CONCRETE
(2017)
Article
Engineering, Civil
Jian Xue, Weiwei Zhang, Jing Wu, Chao Wang, Hongwei Ma
Summary: This study integrates a plate-type local resonator with varying free boundaries within a plate to convert the initial low-order global vibration modes into localized vibration modes. A novel semi-analytical method is proposed to analyze the free vibration of the plate with thickness and displacement discontinuities. The results show that by applying free boundary conditions, the low-order localized vibration frequencies can be significantly reduced without affecting the low-order global frequencies.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Merve Tunay
Summary: In recent years, there has been an increasing number of studies on the mechanical properties of sandwich structures manufactured with the Fused Deposition Modeling (FDM) method. However, there is still a lack of experimental data on the mechanical characteristics of FDM-manufactured sandwich structures under different thermal aging durations. In this experiment, the energy absorption capabilities of sandwich structures with different core geometries were investigated under various thermal aging durations. The results showed that the core topology significantly influenced the energy absorption abilities of the sandwich structures.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Zi-qin Jiang, Zi-yao Niu, Ai-Lin Zhang, Xue-chun Liu
Summary: This paper proposes a crosssection corrugated plate steel special-shaped column (CCSC) that improves the bearing capacity and overall stability of structural columns by using smaller material input. Through theoretical analysis and numerical simulation, the overall stability of the CCSC under axial compression is analyzed. The design method and suggestions for the stability of CCSC are put forward. Compared with conventional square steel tube columns, the CCSC has obvious advantages in overall stability and steel consumption.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Yong Zhang, Yangang Chen, Jixiang Li, Jiacheng Wu, Liang Qian, Yuanqiang Tan, Kunyuan Li, Guoyao Zeng
Summary: A hybrid TPMS method was proposed to develop a new TPMS structure, and the mechanical properties of different TPMS structures were studied experimentally and numerically. Results showed that the hybrid TPMS structure had higher energy absorption and lower load-carrying capacity fluctuation. Further investigations revealed that the topological shape and material distribution had significant influence on mechanical properties, and the hybrid additive TPMS structure exhibited significant crashworthiness advantage in in-plane crushing condition.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Tongfei Sun, Ye Liu, Kaoshan Dai, Alfredo Camara, Yujie Lu, Lijie Wang
Summary: This paper presents a series of experimental and numerical studies on the performance of a novel double-stage coupling damper (DSCD). The effects of damper configuration, friction-yield ratio (Rfy), and loading protocol on the hysteresis performance of the DSCD are investigated. The test results demonstrate that the arrangement of ribs in the DSCD increases its energy dissipation capacity. Numerical analysis reveals that the length of the friction mechanism and the clearance between the yield segment and the restraining system affect the energy dissipation and stability of the damper.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Jeonghwa Lee, Young Jong Kang
Summary: This study investigates the local buckling behavior and strength of I-shape structural sections by considering flange-web interactions through three-dimensional finite element analysis. The study provides a more reasonable estimation of local buckling strength by considering the ratio of flange-web slenderness and height-to-width ratio, and presents design equations for flange local and web-bend buckling coefficients.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Yizhe Chen, Wenfeng Xiang, Qingsong Zhang, Hui Wang, Lin Hua
Summary: This study investigates the surface modification of a nickel plate to improve the bonding strength with carbon fiber-reinforced plastics (CFRP). The results show that different surface modification methods, including sandblasting, coupling agent treatment, and compound coupling agent treatment, significantly enhance the bonding strength of CFRP/Ni joints. The research provides insights into improving the connection between nickel and CFRP, as well as other heterogeneous materials.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Agha Intizar Mehdi, Fengping Zhang, Moon-Young Kim
Summary: A spatial stability theory of mono-symmetric thin-walled steel beams pre-stressed by spatially inclined cables is derived and its validity is demonstrated through numerical examples. The effects of initial tension, deviator numbers, inclined cable profiles, and bonded/un-bonded conditions on lateral-torsional buckling of the pre-stressed beams are investigated, with a specific emphasis on the effects of increasing initial tension.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Teng Ma, Jinxiang Wang, Liangtao Liu, Heng Li, Kui Tang, Yangchen Gu, Yifan Zhang
Summary: The structural response of water-back plate under the combined action of shock wave and bubble loads at water depths of 1-300 m was numerically investigated using an arbitrary Lagrange-Euler method. The accuracy of the numerical model was validated by comparing with experimental and theoretical results. The influences of water depth and length-to-diameter ratio of the charge on the combined damage effect were analyzed. The results show that as water depth increases, the plastic deformation energy of the water-back plate decreases, and the permanent deformation mode changes from convex to concave. When the charge has a large length-to-diameter ratio, the plastic deformation energy of the radial plate is higher than that of the axial plate, and the difference decreases with increasing water depth. Increasing the length-to-diameter ratio enhances the combined damage effect in the radial direction in deep-water environments.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Qiu-Yun Li, Ben Young
Summary: This paper investigates the flexural performance of CFS zed section members bent about the neutral axis parallel to the flanges through experimental and numerical analysis. The results show that the current direct strength method generally provides conservative predictions for the flexural strength of unstiffened zed section members, but slightly unconservative design for edge-stiffened zed section beams. The nominal flexural strengths of zed section members with edge stiffeners were found to be underestimated by 17% to 21% on average. Modified DSM formulae are recommended for the design of CFS zed section beams.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Weinan Gao, Bo Song, Xueyan Chen, Guochang Lin, Huifeng Tan
Summary: This paper presents a precise method for predicting deformation in large-scale inflatable structures, utilizing finite element modeling and laser scanning technique. The study shows a good agreement between the predictive model and non-contact measurement results.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Fei Gao, Zongyi Wang, Rui Zhu, Zhenming Chen, Quanxi Ye, Yaqi Duan, Yunlong Jia, Qin Zhang
Summary: This research investigates the mechanical properties of high-strength ring groove rivet assemblies and the load resistances of riveted T-stubs. Experimental tests reveal that Grade 10.9 rivets have higher yield strength and strain, and lower ultimate strain, making them suitable for high-strength ring groove rivet connections. Increasing the rivet diameter benefits the T-stubs, while increasing the flange thickness is not always advantageous. The Eurocode 3 method is not suitable for T-stubs connected through ring groove rivets, while the Demonceau method is conservative.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Shangchun Jiang, Liangfeng Sun, Haifei Zhan, Zhuoqun Zheng, Xijian Peng, Chaofeng Lue
Summary: This study investigates the bending behavior of two-dimensional nanomaterials, diamane and its analogous structure TBGIB, through atomistic simulations. It reveals that diamane experiences structural failure under bending, while TBGIB bends elastically before undergoing structural failure. The study provides valuable insights for the application of these materials in flexible electronics.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Qiang Zhang, Jianian Wen, Qiang Han, Hanqing Zhuge, Yulong Zhou
Summary: In this study, the mechanical properties of Q690 steel H-section columns under bi-directional cyclic loads are investigated, considering the time-varying characteristics of corrosion. A refined finite element (FE) model is built to analyze the degradation of mechanical property and failure mechanisms of steel columns with different design parameters during the whole life-cycle. The study proposes a quantitative calculation method for the ultimate resistance and damage index of steel columns, taking into account the ageing effects. The findings emphasize the importance of considering the ageing effects of steel columns in seismic design.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Yuda Hu, Qi Zhou, Tao Yang
Summary: The magneto-thermo-elastic coupled free vibration of functionally graded materials cylindrical shell is investigated in this study. The vibration equation in multi-physical field is established and solved using the Hamilton principle and the multi-scale method. The numerical results show that the natural frequency is influenced by various factors such as volume fraction index, initial amplitude, temperature, and magnetic induction intensity.
THIN-WALLED STRUCTURES
(2024)