Article
Mechanics
Armagan Karamanli, Thuc P. Vo
Summary: This paper investigates the size-dependent responses of functionally graded porous microbeams using quasi-3D theory and modified strain gradient theory. Different porosity distribution models are considered and the effects of various factors on the structural responses are analyzed. The significant impact of variable material length scale parameters (MLSPs) is highlighted for accurate analysis.
COMPOSITE STRUCTURES
(2021)
Article
Mechanics
Armagan Karamanli
Summary: This study investigates the structural responses of three directional functionally graded microplates using the modified couple stress theory and finite element method, considering variations in material properties and porosity in different spatial directions. Numerical examples demonstrate the effects of material properties and porosity on the deflections, natural frequencies, and buckling loads of the microplates.
COMPOSITE STRUCTURES
(2021)
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
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
Armagan Karamanli, Nuttawit Wattanasakulpong, M. Lezgy-Nazargah, Thuc P. Vo
Summary: The flexural, free vibration, and buckling responses of 2D-FG curved beams with various shear deformation theories are studied using a finite element model. Material properties are varied with power-law distribution in both length and thickness directions. A two-node beam element with C1 continuity requirement is employed for solving the problems. Various problems including isotropic, 1D- and 2D-FG curved beams are analyzed and the results are validated with those available in the literature. Comprehensive parameter examinations are conducted to investigate the effects of gradation indexes, open angles, end conditions, and aspect ratios on the structural behaviors of 2D-FG curved beams.
Article
Engineering, Aerospace
Armagan Karamanli, Metin Aydogdu, Thuc P. Vo
Summary: This paper presents a comprehensive study on bending, vibration and buckling behaviours of multi-directional FG microplates using a finite element model. The effects of material length scale parameters, aspect ratio, gradient indexes, and boundary conditions on the displacements, natural frequencies and buckling loads are investigated. New results not available in open literature are provided for future studies.
AEROSPACE SCIENCE AND TECHNOLOGY
(2021)
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
Engineering, Multidisciplinary
Shuo Wang, Wenxuan Ding, Zefu Li, Bohao Xu, Chenbo Zhai, Wenbin Kang, Weidong Yang, Yan Li
Summary: This work provides an analysis of the bending and buckling properties of functionally graded nanobeams with trigonometric function-dependent porosity distribution. A high-order curved nanobeam model considering both shear deformations and thickness stretching effect is established. The research investigates the effects of various parameters on the stress-driven models and reveals the different influences of thickness stretching effect, opening angle, and higher-order buckling mode on bending and buckling.
INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE
(2023)
Article
Computer Science, Interdisciplinary Applications
Mahsa Najafi, Isa Ahmadi
Summary: In this paper, an efficient method based on nonlocal elasticity theory and Layerwise theory is proposed for the analysis of bending, buckling, and vibration of functionally graded nanobeam. The method takes into account the transverse shear and normal strains of nanobeam and the small-scale effect. The proposed theory is validated by comparing with other theories and shows accurate results in predicting vibration, buckling, and bending of nanobeams.
ENGINEERING WITH COMPUTERS
(2023)
Article
Engineering, Civil
Lulu Shen, Jiayi Wang, Dan Lu, Weiqiu Chen, Bo Yang
Summary: This paper investigates the flexural responses of transversely isotropic functionally graded annular sector plates subjected to biharmonic loads. Analytical solutions are derived based on the extended England-Spencer plate theory and validated using a finite element model. The results show good agreement between the analytical and numerical solutions. The effects of material gradient index, boundary conditions, and thickness-to-radius ratio on the flexural responses of the plate are discussed using numerical examples.
ENGINEERING STRUCTURES
(2022)
Article
Mechanics
Baker Wael Abuteir, Djamel Boutagouga
Summary: This article examines the free vibration response of functionally graded cylindrical and spherical porous shells with temperature-dependent material properties. The effective material properties are determined using the rule of mixture with porosity phases. The equation of motion is derived based on a curved 8-node degenerated shell element formulation. The study focuses on two different material mixtures and investigates the influence of material constituents, power-law indexes, boundary conditions, radius to thickness ratio, porosity parameter, and temperature gradient on the natural frequencies.
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
Engineering, Civil
Dongying Liu, Yunying Zhou, Jun Zhu
Summary: This study presents analytical investigations on the free vibration and static bending of functionally graded graphene-reinforced nanocomposite spherical shells using different distribution patterns and the layer-wise model for analytical solutions.
ENGINEERING STRUCTURES
(2021)
Article
Engineering, Ocean
Zhenkui Wang, C. Guedes Soares
Summary: This study examines the upheaval thermal buckling of functionally graded subsea pipelines under thermal loadings, taking into account the temperature-dependent material properties distributed through the cross-section. The analytical solution derived evaluates the thermal post-buckling response and numerical results show the significant influence of the temperature-dependent material property on the upheaval thermal buckling behavior. Additionally, the use of functionally graded subsea pipelines leads to a reduction in both the minimum critical temperature and maximum stress.
APPLIED OCEAN RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Zhuangzhuang Wang, Liansheng Ma
Summary: This paper investigates the impact of thickness stretching on the static and dynamic behaviors of functionally graded graphene reinforced composite (FG-GRC) plates, analyzing bending and free vibration behaviors under different plate theories and examining the effect of thickness stretching based on numerical results. The study finds that the thickness stretching effect is mainly influenced by the transverse anisotropy of FG-GRC plates, with the most significant impact occurring when GPLs are asymmetrically distributed, and the effect tends to increase with the number of layers and weight fraction of GPLs.
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Multidisciplinary
Yin Fan, Y. Xiang, Hui-Shen Shen, D. Hui
COMPOSITES PART B-ENGINEERING
(2018)
Article
Engineering, Multidisciplinary
Hui-Shen Shen, Y. Xiang, Yin Fan, D. Hui
COMPOSITES PART B-ENGINEERING
(2018)
Article
Engineering, Multidisciplinary
Hui-Shen Shen, Y. Xian, Yin Fan, D. Hui
COMPOSITES PART B-ENGINEERING
(2018)
Article
Materials Science, Multidisciplinary
F. Lin, C. Yang, Q. H. Zeng, Y. Xiang
COMPUTATIONAL MATERIALS SCIENCE
(2018)
Article
Engineering, Multidisciplinary
Hui-Shen Shen, Y. Xiang
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2018)
Article
Engineering, Mechanical
Yin Fan, Y. Xiang, Hui-Shen Shen, Hai Wang
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2018)
Article
Engineering, Mechanical
Hui-Shen Shen, Y. Xiang, Yin Fan
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2018)
Article
Mechanics
Jie Su, Liao-Liang Ke, Sami El-Borgi, Yang Xiang, Yue-Sheng Wang
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2018)
Article
Engineering, Civil
Hui-Shen Shen, Y. Xiang
THIN-WALLED STRUCTURES
(2018)
Article
Mechanics
Yin Fan, Y. Xiang, Hui-Shen Shen
COMPOSITE STRUCTURES
(2019)
Article
Mechanics
Lin-Feng Zhu, Liao-Liang Ke, Xin-Qun Zhu, Yang Xiang, Yue-Sheng Wang
COMPOSITE STRUCTURES
(2019)
Article
Mechanics
Hui-Shen Shen, Y. Xiang, J. N. Reddy
COMPOSITE STRUCTURES
(2019)
Article
Engineering, Civil
Hui-Shen Shen, Y. Xiang
THIN-WALLED STRUCTURES
(2019)
Proceedings Paper
Physics, Applied
Raju Majji, Yang Xiang, Scott Ding, Chunhui Yang
PROCEEDINGS OF 21ST INTERNATIONAL ESAFORM CONFERENCE ON MATERIAL FORMING (ESAFORM 2018)
(2018)
Article
Engineering, Multidisciplinary
Hui-Shen Shen, Y. Xiang, Feng Lin, D. Hui
COMPOSITES PART B-ENGINEERING
(2017)
Article
Engineering, Civil
Renbing An, Jiacong Yuan, Yi Pan, Duhang Yi
Summary: Traditional timber structures built on sloped land are more susceptible to seismic damage compared to structures built on flat land. The upper portion of the structure is found to be the weak point on sloped land, with potential issues such as tenon failure and column foot sliding.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Elyas Bayat, Federica Tubino
Summary: The current design guidelines for assessing floor vibration performance do not consider the influence of variability in the walking path on the dynamic response of floors. This study investigates the dynamic response of floors under a single pedestrian walking load, taking into account the randomness of the walking path and load. The effectiveness of the current guidelines in predicting floor response is critically assessed.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Gao Ma, Chunxu Hou, Hyeon-Jong Hwang, Linghui Chen, Zhenhao Zhang
Summary: Minimizing earthquake damage and improving repair efficiency are the main principles of resilient structures. This study proposed a repairable column with UHPC segments and replaceable energy dissipaters. The test results showed that the columns with UHPC segments and replaceable dissipaters exhibited high strength, deformation capacity, and energy dissipation.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Kartheek S. M. Sonti, Pavan Kumar Penumakala, Suresh Kumar Reddy Narala, S. Vincent
Summary: In this study, the compressive behavior of alumina hollow particles reinforced aluminum matrix syntactic foams (AMSF) was investigated using analytical, numerical, and experimental methods. The results showed that the FE solver ABAQUS could accurately predict the elastic and elastio-plastic behavior of AMSFs. The study also suggested that FE models have great potential in developing new materials and composites under compression loading.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Zheqi Peng, Xin Wang, Zhishen Wu
Summary: In this study, the statistical modeling of fiber-reinforced polymer (FRP) cables using the classic fiber bundle model is explored. The study considers important features of large-scale multi-tendon FRP cables, such as initial random slack and uneven tensile deformation among tendons. A parametric study and reliability analysis are conducted to predict the load-displacement relation and design thousand-meter-scale FRP cables. The study emphasizes the relation between the reliability index beta of the cable and the safety factor gamma of the FRP material.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Yanchao Shi, Shaozeng Liu, Ye Hu, Zhong-Xian Li, Yang Ding
Summary: This paper introduces a damage assessment method for reinforced concrete (RC) columns under blast loading, using modal parameter measurement as the evaluation index. The validity of the proposed method is validated through numerical and experimental analysis. The results show that this modal-based damage assessment method is applicable for non-destructive evaluation of blast-induced damage of RC columns.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Xiaolin Zou, Maosheng Gong, Zhanxuan Zuo, Qifang Liu
Summary: This paper proposes an efficient framework for assessing the collapse capacity of structures in earthquake engineering. The framework is based on an accurate equivalent single-degree-of-freedom (ESDOF) system, calibrated by a meta-heuristic optimization method. The proposed framework has been validated through case studies, confirming its accuracy and efficiency.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Jie Hu, Weiping Wen, Chenyu Zhang, Changhai Zhai, Shunshun Pei, Zhenghui Wang
Summary: A deep learning-based rapid peak seismic response prediction model is proposed for the most common two-story and three-span subway stations. The model predicts the peak seismic responses of subway stations using a data-driven approach and limited information, achieving good predictive performance and generalization ability, and demonstrating significantly higher computational efficiency compared to numerical simulation methods.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Jin Ho Lee, Jeong-Rae Cho
Summary: A simplified model is proposed to estimate the earthquake responses of a rectangular liquid storage tank considering the fluid-structure interactions. The complex three-dimensional structural behavior of the tank is represented by a combination of fundamental modes of a rectangular-ring-shaped frame structure and a cantilever beam. The system's governing equation is derived, and earthquake responses such as deflection, hydrodynamic pressure, base shear, and overturning moment are obtained from the solution.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
W. J. Lewis, J. M. Russell, T. Q. Li
Summary: The work discusses the key features and advantages of optimal 2-pin arches shaped by statistically prevalent load and constant axial stress. It extends the design space of symmetric arches to cover asymmetric forms and provides minimum values of constant stress for form-finding of such arches made of different materials. The analysis shows that constant stress arches exhibit minimal stress response and have potential implications for sustainability and durability of future infrastructure.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Wen-ming Zhang, Han-xu Zou, Jia-qi Chang, Tian-cheng Liu
Summary: Saddle position is crucial in the construction and control of suspension bridges. This study proposes an analytical approach to estimate the saddle positions in the completed bridge state and discusses the calculation under different definitions. The relationship between the saddle position and the tower's centerline is analyzed, along with the eccentric compression of the tower. The feasibility of the proposed method is verified through a real-life suspension bridge.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Shaise K. John, Alessio Cascardi, Yashida Nadir
Summary: This study experimentally investigated the use of TRM material for reinforcing concrete columns. The results showed that increasing the number of textile layers effectively increased the axial strength. Additionally, the choice of fiber type and hybrid textile configuration also had a significant impact on strength improvement. A new design model that considers the effects of both the confining matrix and textile was proposed.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Chandrashekhar Lakavath, S. Suriya Prakash
Summary: This study experimentally investigated the shear behavior of post-tensioned UHPFRC girders, considering factors such as prestress level, fiber volume fraction, and types of steel fibers. The results showed that increasing prestress and fiber dosage could enhance the ultimate load-carrying capacity of the girders, reduce crack angle, and increase shear cracking load.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Vahid Goodarzimehr, Siamak Talatahari, Saeed Shojaee, Amir H. Gandomi
Summary: In this paper, an Improved Marine Predators Algorithm (IMPA) is proposed for size and shape optimization of truss structures subject to natural frequency constraints. The results indicate that IMPA performs better in solving these nonlinear structural optimization problems compared to other state-of-the-art algorithms.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Chun-Xu Qu, Jin-Zhao Jiang, Ting-Hua Yi, Hong-Nan Li
Summary: In this paper, a computer vision-based method is proposed to monitor the deformation and displacement of building structures by obtaining 3D coordinates of surface feature points. The method can acquire a large number of 3D coordinates in a noncontact form, improve the flexibility and density of measurement point layout, and is simple and cost-effective to operate.
ENGINEERING STRUCTURES
(2024)
