Article
Engineering, Civil
Yun-Long Zhong, Guo-Qiang Li, Yi-Ze Gao
Summary: A novel fuse-type miniature damper named assembled steel rod energy dissipater (ASRED) was developed in this paper, and experimental studies were conducted to investigate its low-cycle fatigue performance and deformation ability, which showed excellent low-cycle fatigue performance and stable hysteretic loops for ASRED.
ENGINEERING STRUCTURES
(2021)
Article
Construction & Building Technology
Yun-Long Zhong, Guo-Qiang Li, Yan-Bo Wang, Yang Xiang
Summary: In this paper, the influence of design parameters on the hysteresis behavior of an assembled steel rod energy dissipater (ASRED) was investigated using numerical models. It was found that increasing the dissipation segment length and friction coefficient would reduce the fatigue life and increase the cyclic hardening rate of the energy dissipater. The length of the middle stopper had no effect on the cyclic behavior and fatigue life, while an excessive clearance size would cause pitching effects and tensile strength deterioration. Optimal design parameters were also proposed to improve the performance of the ASRED.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Nanoscience & Nanotechnology
Albin Gottwalt-Baruth, Paul Kubaschinski, Manuela Waltz, Rainer Voelkl, Uwe Glatzel, Ulrich Tetzlaff
Summary: The cyclic deformation behavior of a non-oriented electrical steel sheet depends on the loading condition, and it can exhibit continuous cyclic hardening, cyclic slip, or cyclic softening.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Engineering, Manufacturing
Yajing Li, Yutong Yuan, Dexin Wang, Sichao Fu, Danrong Song, Maurizio Vedani, Xu Chen
Summary: The fatigue behavior of WAAM austenitic stainless steel (SS) was studied. It was found that the fatigue life and failure mechanisms are dependent on the microstructure, with slightly longer fatigue life at high strain amplitudes and shorter fatigue life at low strain amplitudes compared with hot-rolled materials.
ADDITIVE MANUFACTURING
(2022)
Article
Engineering, Mechanical
Zhongran Zhang, Zhenming Yue, Jiashuo Qi, Jun Gao, Yliang Qiu
Summary: In this study, a sheet fatigue shear test device is designed and applied to low-cycle fatigue testing of DP900 with varying strain amplitudes. Microstructure analysis and fracture surface examination reveal cyclic softening behavior, with total plastic strain energy absorbed increasing as loading amplitude decreases. The life prediction model based on plastic strain energy density and strain amplitude is suitable for cyclic shear paths, with microinhomogeneity influencing stress and strain distribution, particularly martensite deformation.
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2022)
Article
Materials Science, Multidisciplinary
Guoying Sui, Zhenqiang Wang, Fengchun Jiang, Chengzhi Zhao, Jiandong Wang
Summary: The motivation of this work is to investigate the cyclic deformation behaviors of 42CrMo steel under uniaxial stress-controlled cyclic-loading. The study reveals that the cyclic deformation is positively correlated with increases in mean stress and stress amplitude, while the increase in loading frequency inhibits the cyclic accumulation deformation.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Yang Guang, Du Guojun
Summary: The microstructure of martensitic steel was analyzed using transmission electron microscopy and X-ray diffraction. Low-cycle fatigue (LCF) tests were conducted on martensitic steel with different strain amplitudes using an MTS universal hydraulic servo testing machine. The damage accumulation and cyclic elastic-plastic constitutive model of martensitic steel were studied, and the influence of tempering on hysteretic loop and fatigue damage was discussed. With the tempering temperature increasing, the area of the hysteresis loop increased, hysteresis energy increased, and fatigue life decreased.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
R. Duraipandi, M. Nani Babu, A. Moitra
Summary: This study investigated the fatigue crack growth behavior of SS 316L with different nitrogen contents and analyzed the variation of crack growth rate in relation to stacking fault energy. The influence of factors such as tensile strength, modulus, and microstructure on crack growth was also studied.
Article
Engineering, Mechanical
Wei Song, Xuesong Liu, Jie Xu, Yu Fan, Duanhu Shi, Mohammad Reza Khosravani, Filippo Berto
Summary: The study quantified multiaxial fatigue damage for notched components or welded structures under complex service conditions. Through multiaxial Low Cycle Fatigue (LCF) tests and analysis of cyclic plasticity model, a simplified SWT model was proposed for LCF assessment of notch specimens, showing good agreements between predictions and test data.
INTERNATIONAL JOURNAL OF FATIGUE
(2021)
Article
Engineering, Mechanical
T. Wegener, M. Krochmal, T. R. Moeller, M. T. Le, A. Czap, F. Marianek, H. Fakesch, T. Niendorf
Summary: This study investigates the microstructure and mechanical properties, specifically the low-cycle fatigue behavior, of a novel high-strength mold steel. The results indicate that a more energy- and cost-intensive high-temperature annealing treatment can be avoided without significant loss of mechanical performance.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Chemistry, Physical
Zhanzhan Tang, Zheng Chen, Zhixiang He, Xiaomei Hu, Hanyang Xue, Hanging Zhuge
Summary: This study investigated the combined effects of high and low cycle fatigue loads on the performance of low alloy steel, identifying that prior HCF damages significantly decrease LCF life. The research also found that pre-fatigue damages in bridge joints can lead to significant increases in fatigue damages.
Article
Engineering, Mechanical
Letian Hai, Huiyong Ban, Xiaofeng Yang, Yongjiu Shi
Summary: Titanium-clad bimetallic steel integrates the corrosion resistance of titanium alloy into structural steels, providing improved safety, serviceability, and durability. However, there is limited research on its seismic performance and fatigue behavior, hindering the development of proper design methodologies. This study investigates the low-cycle fatigue behavior of titanium-clad bimetallic steel and compares it with conventional steels.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Engineering, Mechanical
Hong Zhang, Quanyi Wang, Xiufang Gong, Tianjian Wang, Yubing Pei, Wei Zhang, Yongjie Liu, Chong Wang, Qingyuan Wang
Summary: The low cycle fatigue response and damage mechanism of MarBN steel under symmetrical strain and stress-controlled modes at room temperature were investigated. Significant cyclic softening was observed, along with tension-compression asymmetry as a critical factor for controlling cyclic fatigue resistance. The relationship between damage mechanism and microstructure under both modes was discussed, and the impact of tension-compression asymmetry on the prediction model of fatigue life was examined based on an effective strain range-related model.
INTERNATIONAL JOURNAL OF FATIGUE
(2021)
Article
Metallurgy & Metallurgical Engineering
Xie Jun, Shu De-long, Hou Gui-chen, Yu Jin-jiang, Zhou Yi-zhou, Sun Xiao-feng
Summary: The study on low-cycle fatigue (LCF) behavior of K416B alloy at 650 degrees C reveals that the fatigue life of the alloy depends on its material strength, characterized mainly by elastic deformation. Deformation mechanism of the alloy in tension-compression fatigue involves dislocation slip reflected in a dislocation configuration similar to the Frawk-Reed source. During late stages of LCF, fatigue-induced cracks develop from the alloy surface and may propagate along regions of eutectic and bulk M6C carbide, leading to cleavage fracture.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2021)
Article
Materials Science, Multidisciplinary
W. Song, X. Liu, Jie Xu, Yu Fan, Duanhu Shi, Feng Yang, Xiaolei Xia, F. Berto, Di Wan
Summary: The study conducted low-cycle fatigue tests on 10CrNi3MoV steel and its undermatched weldments, analyzing cyclic stress-strain evolutions using a cyclic plastic model and continuous damage mechanics theory. The prediction of LCF life and assessment of damage evolution under different strain amplitudes were achieved through a combination of material parameters calibration and damage parameters implementation, showing good agreement between experimental and FE results based on CDM approach.
FRONTIERS IN MATERIALS
(2021)
Article
Engineering, Civil
Yiyi Zhou, Ye Liu, Chun-Lin Wang
Summary: This paper investigates the parameter selection and design method of an all-steel bamboo-shaped energy dissipater (SBED). The numerical model of SBED is calibrated based on previous test results. Five series of numerical cases are conducted to evaluate the effects of different geometrical parameters on the performance of SBED. Additionally, a design method is provided for SBED based on specific demands of bearing capacity and deformation.
JOURNAL OF EARTHQUAKE ENGINEERING
(2022)
Article
Mechanics
Hong Zhu, Qiang Wang, Jian-Guo Dai, Chunlin Wang, Gang Wu
Summary: This paper proposed an innovative method for anchoring CFRP bars using additional aluminium alloy ribs (ARs), which improved the bond performance and optimized the arrangement of the ARs along the bond length. The transfer length test showed that the ARs resulted in a shorter transfer length due to an improved bond mechanism. Short- and long-term tests demonstrated that the presence of ARs enhanced shear anti-cracking capacity, reduced end slips, and delayed long-term deflection increase in CFRP reinforced PPC beams, proving the reliability of ARs as an end anchorage system for pretensioned CFRP bars in PPC members.
COMPOSITE STRUCTURES
(2022)
Article
Engineering, Civil
Yuan Qing, Chun-Lin Wang, Shaoping Meng, Bin Zeng
Summary: A new precast concrete column system with CTB couplers was proposed to ensure continuity of longitudinal rebar, and experimental results showed that CTB columns exhibited better performance than monolithic concrete columns, with an ultimate drift ratio greater than 1/50, a ductility factor greater than 3.48, and a higher bearing capacity. The reliability of the CTB coupler was validated and a simplified model was proposed to accurately calculate the ultimate drift ratio of the CTB column, which matched well with measured values.
ENGINEERING STRUCTURES
(2022)
Article
Construction & Building Technology
Bin Zeng, Jingwei Gao, Yuan Qing, Chun-Lin Wang, Xun Sun
Summary: Numerical studies on suspended-floor structures showed that the use of viscous dampers significantly reduced roof drift and base shear force. The introduction of diagonal steel braces in the y-direction improved lateral stiffness in the structure under design-basis earthquakes. The distribution of damping coefficients affected seismic responses, with structures exhibiting triangular distribution showing lower response than those with uniform distribution.
STRUCTURAL DESIGN OF TALL AND SPECIAL BUILDINGS
(2022)
Article
Construction & Building Technology
Yue Yuan, Jingwei Gao, Yuan Qing, Chun-Lin Wang
Summary: The new HBRB with movable steel blocks filled between the upper and lower flanges effectively restricts inward deformation, while closer transverse ribs reinforce to reduce local buckling of the flanges, improving seismic performance and stability. Compared to previous HBRB, the new HBRB exhibits better performance.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Construction & Building Technology
Yong Zhang, Yuan Qing, Chun-Lin Wang, Bin Zeng
Summary: This article investigates the seismic performance of a locally prestressed precast wall with posttensioned tendons and additional energy dissipaters. Experimental and numerical studies showed that the wall exhibited stable hysteretic response and excellent self-centering capacity. Adjusting the height of anchor points and the positioning of dissipaters can enhance the bearing capacity and energy dissipation capacity of the wall.
STRUCTURAL CONCRETE
(2023)
Article
Engineering, Civil
Jingwei Gao, Chun-Lin Wang, Bin Zeng, Tianyi Qiu
Summary: This paper proposes a novel sleeved member with additional friction dampers (FSM) to enhance stability and energy dissipation in compression members of space structures. The FSM consists of an inner core, an outer sleeve, and friction dampers using composite friction materials. Cyclic compression-unloading tests were conducted to compare the FSM with an ordinary assembled sleeve member (ASM). The results showed that the FSM exhibited comparable lateral-constraint capacity, greater resistance, and greater energy dissipation capacity under tiny axial displacement.
ENGINEERING STRUCTURES
(2023)
Article
Engineering, Civil
Yuan Qing, Xiuhang Li, Chun-Lin Wang, Bin Zeng, Shaoping Meng
Summary: This paper proposes a new dry-assembled precast concrete frame with buckling-restrained braces (BRB-DPCF) for building industrialization and promoting precast structures in earthquake-prone zones. The paper presents the design and testing of a monolithic concrete frame (BRB-MCF) and a BRB-DPCF to investigate the seismic performance. The results show that BRB-DPCF has comparable lateral-resistance capacity to BRB-MCF, with greater initial stiffness and smaller energy dissipation capacity.
ENGINEERING STRUCTURES
(2023)
Article
Engineering, Civil
Yuan Qing, Ye Liu, Chun-Lin Wang, Dongsheng Du, Shaoping Meng
Summary: This paper investigates a post-tensioned precast concrete beam-column joint (PPED-PPS) with energy dissipaters and partially precast slabs. Two batches of PPED-PPS specimens were designed and tested to study its seismic performance under different conditions. The experimental results show that the PPED-PPS exhibits reduced energy dissipation capacity and bearing capacity after repeated loading and failure of the energy dissipaters.
ENGINEERING STRUCTURES
(2023)
Article
Construction & Building Technology
Jingwei Gao, Chun -Lin Wang, Shaoping Meng, Bin Zeng
Summary: This study conducted cyclic loading tests on 30 specimens to evaluate the effects of loading sequence and rate on metal friction dampers. The results showed that the loading rates significantly influenced the normal force loss and friction coefficient of the friction interfaces, and analytical models of the dynamic friction coefficient were established.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2023)
Article
Construction & Building Technology
Shi-Lin Liang, Zhi Li, Chun-Lin Wang, Kai Qian
Summary: The resistance to progressive collapse in precast concrete buildings is similar to that of reinforced concrete buildings, although the specific connections may affect the magnitude of each load resisting mechanism. An analytical model is proposed to better understand the influence of critical parameters.
JOURNAL OF STRUCTURAL ENGINEERING
(2023)
Article
Engineering, Civil
Hai-Rong Shi, Ying Chen, Chun-Lin Wang, Bin Zeng
Summary: Confining with an outer sleeve is an effective means of enhancing the load-bearing and deformation capacity of compression struts. However, the unrestrained extension segment is prone to excess flexural deformation, dramatically decreasing the overall load carrying capacity of the sleeved member.
THIN-WALLED STRUCTURES
(2023)
Article
Construction & Building Technology
Zhao-Hui Gong, Jin Zhang, Shou-Tan Song, Chun-Lin Wang
Summary: This paper tested six SMA bars with a diameter of 14 mm under multiple loading schemes to analyze hysteresis performance indicators. The results showed that all specimens exhibited stable hysteresis loops and high deformation recovery rates. The study also proposed tensile cyclic and tension-compression cyclic constitutive models for martensitic SMA and conducted numerical simulations to provide theoretical support for utilizing the shape memory effect.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Yong Zhao, Yue Yuan, Yitian Wu, Chun-Lin Wang, Shaoping Meng
Summary: This study evaluated the withdrawal performance differences of glulam-anchored screws, mortar-anchored screws, and mortar-glulam hybrid anchored screws through pull-out experiments. The effects of screw diameter, effective anchorage length, and mortar anchorage ratio on the withdrawal performance of screws were analyzed. The results showed that mortar anchorage had significantly higher withdrawal strength and stiffness compared to glulam anchorage, and the withdrawal performance of mortar-glulam hybrid anchored screws increased linearly with the increase of mortar anchorage length.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Engineering, Civil
Yong Zhang, Chun-Lin Wang, Gang Wu
Summary: This paper conducted quasi-static tests on the locally prestressed precast concrete wall (LPPW) to investigate the influence of the height of the upper anchorage points of the post-tensioning (PT) tendons and to evaluate its seismic performance. The test results showed that decreasing the anchorage height of the PT tendons increased the post-yield stiffness and prestress losses of LPPW. LPPW exhibited good seismic performance under repeated loading and restored most of its original performance after repair, validating its excellent repairability.
ENGINEERING STRUCTURES
(2023)
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)
