Article
Engineering, Mechanical
Loic Tissot-Daguette, Hubert Schneegans, Etienne Thalmann, Simon Henein
Summary: This paper aims to provide closed-form formulas to efficiently characterize the snap-through behavior of rotationally actuated pinned-pinned and fixed-pinned bistable buckled beams and facilitate the design process. A new generic analytical model based on Euler-Bernoulli beam theory is established and validated using finite element and experimental methods, showing excellent agreement with the model.
MECHANISM AND MACHINE THEORY
(2022)
Article
Engineering, Civil
Shuxian Chen, Jun-zhi Liu, Tak-Ming Chan
Summary: This article investigates the effect of a slender web on the local buckling and post-buckling behavior of hybrid I-sections under compression. Experimental and numerical analyses show that the unbuckled portion of the slender web plate provides post-buckling strength for the I-section stub columns. Comparing existing design methods, the Eurocode 3 provides more accurate predictions than the North American, Australian, and Chinese codes, as well as the existing direct strength and continuous strength methods.
THIN-WALLED STRUCTURES
(2023)
Article
Engineering, Civil
Zhaoyu Xu, Genshu Tong, Lei Zhang, Yong Guo
Summary: This paper presents a method to improve the stability behavior of outstand flanges and validates its accuracy, showing promising results. The study investigates the effects of flexural and torsional rigidities of lips, as well as the slenderness ratios of flanges, on elastic buckling behavior. Design remarks are concluded to provide valuable reference for practical application of extruded aluminium alloy lipped angles.
Article
Engineering, Civil
Elide Nastri, Vincenzo Piluso, Alessandro Pisapia
Summary: This paper presents and discusses the results of an experimental program on SHS aluminium beams subjected to non-uniform bending. The material properties, flexural resistance, rotation capability, and failure mode are analyzed and compared with the European design provisions. The results show that the codified provisions generally provide safe ultimate resistance, while the refined effective thickness method exhibits higher accuracy in estimating the ultimate flexural resistance.
ENGINEERING STRUCTURES
(2022)
Article
Engineering, Civil
Fei Yin, Lu Yang, Kelong Xu, Jie Wang, Junwei Fan
Summary: This paper reports an experimental and numerical study on the residual stresses and the cross-sectional behavior of Q1100 ultrahigh strength steel welded I-sections. It proposes a new modified design method and validates its accuracy through reliability analyses.
ENGINEERING STRUCTURES
(2022)
Article
Engineering, Civil
Zhicheng Yang, Airong Liu, Siu-Kai Lai, Babak Safaei, Jiangen Lv, Yonghui Huang, Jiyang Fu
Summary: In this study, an analytical investigation on the asymmetric static and dynamic buckling of a pinned-fixed functionally graded graphene nanoplatelet reinforced composite (FG-GPLRC) arch under thermal conditions was conducted. The accuracy of the analytical method was verified through numerical analysis, demonstrating a good prediction of the static and dynamic buckling of the arch. The study comprehensively discussed the influence of graphene nanoplatelets weight fraction, concentration, and geometry on the static and dynamic buckling of the arch, showing that the buckling load of the arch is sensitive to the applied load position under various elevated temperatures.
ENGINEERING STRUCTURES
(2022)
Article
Mechanics
Christoph Adam, Dominik Ladurner, Thomas Furtmueller
Summary: This paper investigates the nonlinear in-plane instability of symmetrically layered half-sine shallow arches with interlayer slip. The arches are soft-hinged supported on both ends. The nonlinear equilibrium equations are derived based on the principle of minimum total potential energy and the kinematic hypotheses of the Euler-Bernoulli theory. Analytical expressions for limit point buckling and bifurcation buckling are obtained for a sine half-wave curved shallow arch subjected to a sine half-wave radial loading. The derived relationships provide comprehensive insight into the in-plane instability of shallow arches with interlayer slip without the need for costly numerical parameter studies.
INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
(2023)
Article
Engineering, Civil
Beibei Li, Yuanqing Wang, Ying Zhang, Xin Meng, Huanxin Yuan, Xinhang Zhi
Summary: This study presents the structural performance and design of extruded high-strength aluminium alloy square hollow section (SHS) columns. It evaluates the applicability of current design rules and proposes improved design curves and methods for accurate and reliable predictions.
THIN-WALLED STRUCTURES
(2022)
Article
Engineering, Civil
Jun-zhi Liu, Shuxian Chen, Tak-Ming Chan
Summary: This paper presents a comprehensive study on the material properties and behavior of Q690 high strength steel welded T-sections. Experimental tests and numerical models were used to evaluate the cross-section slenderness limits and local buckling design provisions in different design codes. The results indicate that the current limits are generally accurate and safe, with EN 1993-1-12 and ANSI/AISC 360-16 providing more precise predictions compared to AS 4100, DSM, and CSM.
ENGINEERING STRUCTURES
(2022)
Article
Construction & Building Technology
Ngoc Hieu Pham, Cao Hung Pham, Kim J. R. Rasmussen
Summary: The study investigated global buckling of cold-rolled aluminium alloy channel beam members through four-point bending tests, revealing interactions between different buckling modes. Finite element models were developed to simulate the behavior and ultimate buckling capacities of the members. The experimental results laid the foundation for further parametric studies and proposing new design rules.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2021)
Article
Construction & Building Technology
Dang Khoa Phan, Kim J. R. Rasmussen, Benjamin W. Schafer
Summary: This study investigated the strength and behavior of built-up section columns composed of three or four lipped channel sections. It was found that singly-symmetric columns typically experienced local, distortional, and/or flexural-torsional buckling failure modes, while doubly-symmetric columns usually failed in local, distortional, and/or flexural buckling modes. The research proposed a design procedure for built-up sections experiencing flexural-torsional buckling, which is not explicitly stipulated in current design standards or previous studies.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2021)
Article
Engineering, Civil
Chung-Che Chou, Yun-Chuan Lai, Hou-Chun Xiong, Te-Hung Lin, Chia-Ming Uang, Gilberto Mosqueda, Gulen Ozkula, Sherif El-Tawil, Jason P. McCormick
Summary: Recent studies have shown that the response of isolated steel columns under combined axial load and cyclic lateral drift is influenced by the boundary condition. To consider more realistic boundary conditions of first-story columns in a frame, two-and-a-half story beam-column subassemblages were tested. The results showed that the realistic boundary condition significantly alters the column plastic hinging, moment distribution, and out-of-plane deformation.
EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS
(2022)
Article
Engineering, Civil
Yong Mei, Yao Cui, Chicheng Ma, Yao Sun, Andi Su
Summary: This paper presents experimental and numerical investigations into the structural performance and strengths of G550 high strength cold-formed steel lipped channel section columns failing by interactive buckling. The results indicate that the effective width method (EWM) yields scattered and conservative ultimate strengths, while the direct strength method (DSM) provides more consistent and accurate predictions for G550 high strength CFS lipped channel section columns failing by interactive buckling.
THIN-WALLED STRUCTURES
(2023)
Article
Engineering, Civil
Vincenzo Piluso, Alessandro Pisapia, Gianvittorio Rizzano
Summary: The aim of this paper is to evaluate the ultimate behavior of aluminum channel sections under uniform compression-induced local buckling. Two approaches, namely the Deformation Theory of Plasticity (DTP) and the Effective Thickness Method (ETM), are presented for predicting the inelastic response of aluminum members. The ETM is extended in this study to consider the mechanical non-linearity of material and the influence of section plates constraints. The accuracy of these procedures is validated by comparing the theoretical ultimate compressive resistance with the results from stub column tests.
THIN-WALLED STRUCTURES
(2022)
Article
Engineering, Civil
Zhaoyu Xu, Genshu Tong, Lei Zhang, Yong Guo
Summary: The research investigates the behavior and design method of 7A04-T6 high-strength extruded aluminium alloy lipped angle columns in axial compression through experiments and finite element simulations. The study shows that existing design methods generally provide accurate predictions for columns failing in flexural buckling, while Eurocode 9 (EC9) gives more accurate predictions for torsional-flexural buckling. Other design rules tend to be more conservative in predictions for this type of buckling.
THIN-WALLED STRUCTURES
(2022)
Article
Construction & Building Technology
Hao Bao, Gang Xu, Min Yu, Qing Wang, Rende Li, Mohamed Saafi, Jianqiao Ye
Summary: In this study, supercritical carbonation tests were conducted on concrete specimens with different water-to-cement ratios. The thickness of interfacial transition zone (ITZ) was determined by analyzing the distribution of Ca/Si ratio across the interface between coarse aggregate and cement paste. The impact of supercritical carbonation on micro hardness distribution, microstructure, and porosity of ITZ was analyzed. A geometric and physical model was proposed to study cracks, pores, calcium carbonates, and C-S-H gel at the interface of coarse aggregates and cement paste. The results showed that the overall microstructures of concrete became more compacted after supercritical carbonation, with a reduction in ITZ thickness. Furthermore, the carbonation depth of concrete was found to be positively correlated with the thickness and porosity of ITZ. Porosity of ITZ was identified as having a greater impact on the carbonation depth of concrete.
CEMENT & CONCRETE COMPOSITES
(2022)
Article
Construction & Building Technology
Congcong Xue, Min Yu, Haoming Xu, Lihua Xu, Mohamed Saafi, Jianqiao Ye
Summary: The study focused on examining the thermal properties of UHPC with coarse aggregates under high temperatures, showing that high temperature and coarse aggregates have a significant impact on thermal properties, while steel fibers have little effect. Proposed meso calculation formulas for predicting thermal properties can be used in structural component design.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Engineering, Civil
X. W. Chen, H. X. Yuan, X. X. Du, Z. W. Zhu
Summary: This paper investigates the nonlinear deformation behavior of welded stainless steel I-section flexural members through experimental tests and numerical simulations. Finite element models considering material nonlinearity, initial geometric imperfections, and welding residual stresses were developed and validated. The obtained test results were employed to evaluate existing calculation methods and revised calculation formulae were developed to improve the accuracy of predicting the nonlinear deflection of welded stainless steel I-section beams.
ENGINEERING STRUCTURES
(2022)
Article
Engineering, Civil
Beibei Li, Yuanqing Wang, Ying Zhang, Huanxin Yuan, Xinhang Zhi, Charalampos C. Baniotopoulos
Summary: This paper investigates the mechanical performance of high-strength aluminium alloy hollow section beams through experiments and numerical analysis. The results show that the current design provisions are relatively conservative and the proposed continuous strength method can improve the resistance predictions effectively. It is concluded that all four design methods are feasible and safe for the design of 7A04-T6 high-strength aluminium alloy beams.
ENGINEERING STRUCTURES
(2022)
Article
Engineering, Civil
Yangwei Wu, Xinxi Du, Huanxin Yuan, Man Zhou
Summary: This paper experimentally and numerically investigates the shear behavior of cold-formed steel box girders assembled from tubular flanges and sinusoidal corrugated webs. The study examines the influences of different parameters and proposes a simplified design method for predicting the shear strength of these girders.
THIN-WALLED STRUCTURES
(2022)
Article
Mechanics
Tan Wang, Min Yu, Wentao Shan, Lihua Xu, ShanShan Cheng, Long-yuan Li
Summary: The post-fire compressive stress-strain behavior of steel fiber reinforced recycled aggregate concrete (SFR-RAC) after exposure to elevated temperatures was investigated through uniaxial compressive tests. The test considered parameters such as water-to-cement ratio, recycled concrete aggregate (RCA) substituting ratio, steel fiber content, and heated temperature. The study analyzed the failure mode, strength, elastic modulus, peak strain, and strain-stress response of the specimens. The results showed that the compressive strength and elastic modulus decreased with increased water-to-cement ratio and/or RCA substituting ratio at any exposed temperature. The steel fiber had a positive effect on the residual mechanical properties, which increased with the heated temperature.
COMPOSITE STRUCTURES
(2023)
Article
Mechanics
Yanqin Zeng, Lihua Xu, Yin Chi, Min Yu, Le Huang
Summary: By using ultra-high-performance concrete with coarse aggregate (UHPC-CA) instead of plain concrete, the mechanical performance of FRP tube-confined concrete-filled steel-encased columns (FUSCs) can be significantly improved with controllable cost. This study investigated the axial compressive behavior of FUSCs, considering variables such as the thickness and fiber winding angle of FRP tube, section size of profile steel, and substitution rate of coarse aggregate. The research outcome provides a reference for the design of FUSCs and promotes the application of FUSC structure.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Civil
Tan Wang, Min Yu, Xu Zhang, Lihua Xu, Le Huang
Summary: In this study, fire resistance tests were conducted on twelve full-scale circular columns to better understand the behaviors of ultra-high performance concrete filled steel tube (UHPCFST) under fire. The effects of steel fiber content, coarse aggregate content, and load level on the performance of UHPCFST columns were evaluated. The results showed that the columns failed in overall instability regardless of the mix proportion of UHPC and the applied load. The inclusion of steel fiber and coarse aggregate improved the fire resistance of the UHPCFST column, leading to better global stability and further hydration at temperatures below 400 degrees C.
ENGINEERING STRUCTURES
(2023)
Article
Construction & Building Technology
Donghua Tong, Yin Chi, Le Huang, Yanqin Zeng, Min Yu, Lihua Xu
Summary: Through pull-out tests of 54 specimens, the bond behaviors between GFRP bar and UHPC were studied. Factors such as GFRP bar diameter, embedment length, concrete cover thickness, and fiber characteristic parameters were evaluated. The results showed that the bond strength increased with the thickness of the concrete cover and volume fraction of steel fiber, while it decreased with the increase of GFRP bar diameter and embedment length. Fibers in the UHPC matrix had a significant impact on the bond behaviors, altering the bond failure mode.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Construction & Building Technology
Congcong Xue, Min Yu, Haoming Xu, Lihua Xu, Mohamed Saafi, Jianqiao Ye
Summary: This paper explores the macro compressive strength, morphological changes, and microstructure of ultra-high performance concrete (UHPC) with coarse aggregates (CA-UHPC) under high temperature and after cooling to room temperature. CA-UHPC specimens with various coarse aggregates ratios are tested and analyzed at temperatures up to 900 degrees C. The results show that the addition of coarse aggregates (volume content <= 30%) enhances the compressive strength of CA-UHPC at both room and high temperatures. The paper also discusses the microstructure evolution, macroscopic strength change, and deterioration mechanism of the material based on the analysis of mass loss, structure morphology, phase transformation, and pore evolution of CA-UHPC after exposure to high temperature.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Construction & Building Technology
Chunlei Yu, Min Yu, Xiangyu Li, Lihua Xu, Sumei Liu, Jianqiao Ye
Summary: In this paper, a physics-based data-driven framework is used to develop a uniaxial constitutive model for fiber-reinforced concrete (FRC). Through the construction of an experimental database, calibration of physical model parameters, and the implementation of a neural network, the proposed model accurately predicts the stress-strain relationships of FRC, making it applicable to multiple loading conditions.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Min Yu, Hanjie Lin, Tan Wang, Feiyu Shi, Dawang Li, Yin Chi, Long-yuan Li
Summary: This paper presents an experimental and numerical investigation on the thermal properties of steel fibre-reinforced alkali-activated concrete (AAC) made by using multiple precursors at elevated temperatures. The effects of temperature heating AAC, coarse aggregate, and steel fibre on the thermal performance of AAC are quantitatively evaluated. A multi-phase mesoscale model is developed to predict the thermal properties of AAC structures.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Engineering, Civil
Min Yu, Wenlan Liao, Sumei Liu, Tan Wang, Chunlei Yu, Shanshan Cheng
Summary: This study investigated the axial compressive performance of ultra-high-performance concrete-filled steel tube (UHPCFST) stub columns at different ages. The failure mode, stress-strain curve, and important indicators of UHPC at different ages were analyzed. The failure patterns, load-strain curves, and the evolution of ultimate bearing capacities and stiffness of UHPCFST short columns at various ages were also analyzed. Additionally, a formula for calculating the load bearing capacity of UHPCFST short columns at different ages was proposed and verified using test and simulation results. This study provides reference for the safe construction of ultra-high performance concrete-filled steel tubes.
Article
Engineering, Civil
Congcong Xue, Min Yu, Mingyang Wu, Shanshan Cheng
Summary: Ultra-high performance concrete-filled steel tubes (UHPCFSTs) are an effective structural type that utilizes the advantages of both steel and UHPC. The study analyzed the effects of temperature, steel tube thickness, and coarse aggregate content on the performance and failure modes of UHPCFST members. The results showed that 400 degrees Celsius was the critical temperature where the structural performance of UHPCFST changed significantly.
Article
Engineering, Civil
Donghua Tong, Min Yu, Shulei Li, Yanqin Zeng, Shanshan Cheng, Yin Chi
Summary: This study investigates the influence of continuous construction process on the axial compressive behaviour of early-age concrete-filled steel tubes (CFSTs) under multi-stage loading schemes. The results show that the deformation of early-age CFSTs varies significantly with different load parameters, and excessive deformation can occur due to local buckling of the steel tube during multi-stage loadings. The study develops a theoretical algorithm for calculating the relationship between the deformation of early-age CFSTs and the age of concrete, and proposes a simplified calculation method for the deformation of early-age CFSTs under multi-stage loading.
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)