Article
Construction & Building Technology
Mehmet Fethi Ertenli, Erdal Erdal, Alper Buyukkaragoz, Ilker Kalkan, Ceyhun Aksoylu, Yasin Onuralp Ozkilic
Summary: The study aims to develop analytical methods for estimating the elastic buckling moments of steel beams with multiple circular perforations. The conventional equations in codes and literature underestimate the buckling moments of these beams. Finite element analyses confirmed that the current design codes overestimate the buckling loads of beams with perforations.
STEEL AND COMPOSITE STRUCTURES
(2023)
Article
Engineering, Multidisciplinary
Hao Wu, Jie Sun, Wen Peng, Lei Jin, Dianhua Zhang
Summary: This study establishes an analytical model for the coupling of temperature, deformation, and residual stress to explore the mechanism of residual stress formation in hot-rolled strip and how to control it. The accuracy of the model is verified by comparing it with a finite element model, and a method to calculate the critical exit crown ratio to maintain strip flatness is proposed.
APPLIED MATHEMATICAL MODELLING
(2024)
Article
Engineering, Manufacturing
Vishwa Bhanu, Ankur Gupta, Chandan Pandey
Summary: The present study focuses on the dissimilar metal weld (DMW) of P91 ferritic-martensitic steel and Incoloy 800HT. Extensive microstructure analysis was conducted to investigate the relationship between welding temperature and microstructure, as well as the impact of microstructure on the mechanical properties of the weld. Post-weld heat treatment was used to relieve residual stresses, and the mechanical properties of different regions were evaluated. This study provides insights for the use of P91 and Incoloy 800HT in advanced ultra-supercritical boiler pipes and tubes.
JOURNAL OF MANUFACTURING PROCESSES
(2022)
Article
Engineering, Marine
Weihan Zhang, Stelios Kyriakides
Summary: The study investigates lateral buckling of pipelines caused by periodic geometric imperfections introduced by the Residual Curvature Method. It finds that the method is effective in controlling lateral buckling, providing guidance on optimal periodicity, avoidance of snap-through buckling, and simultaneous minimization of plastic bending.
Article
Engineering, Civil
Jing Qiu, Qiuhong Zhao, Zhiyu Wang, Cheng Yu
Summary: This paper investigates the elastic shear buckling behavior of trapezoidally corrugated wall plates in vertically or horizontally Corrugated Steel Plate Shear Walls (CoSPSWs) with constraints from neighboring subpanels and boundary frame members. The study finds that the constraints from boundary frame members along the corrugated edges have a significant influence on the shear buckling behavior, while the constraints along the straight edges have a negligible influence. Various factors such as plate thickness, straight edge length, corrugated edge length, inclined subpanel width, corrugation angle, and corrugation depth affect the global shear buckling stress of corrugated wall plates.
THIN-WALLED STRUCTURES
(2022)
Article
Engineering, Civil
Toufik Belaid, Adel Slimani, Fatiha Ammari, Dalila Boukhalfa, Redouane Adman
Summary: This article investigates the elastic lateral buckling of unrestrained beams and proposes an analytical formulation for the critical moment for lateral-torsional buckling of steel beams under asymmetrical loading.
THIN-WALLED STRUCTURES
(2023)
Article
Engineering, Marine
Zhenkui Wang, Nuo Duan, C. Guedes Soares
Summary: This study investigates controlled lateral buckling triggered by imposed residual initial imperfections along subsea pipelines. Mathematical models and analytical solutions are proposed and validated by comparing with FEA results. The results show that selecting an appropriate wavelength of initial imperfection and reducing the distance between adjacent initial imperfections can mitigate maximum stress and reduce displacement amplitude.
Article
Engineering, Civil
Maxime Lebastard, Mael Couchaux, Alain Bureau, Mohammed Hjiaj
Summary: The buckling behaviour of steel members is influenced by residual stress distribution, which is affected by the fabrication process. This study investigates the impact of flame-cuts on residual stresses and proposes a new model for welded I-sections with flame-cut flanges. Experimental results validate the finite element model for evaluating the effect of flange fabrication process on lateral-torsional buckling resistance.
THIN-WALLED STRUCTURES
(2023)
Review
Materials Science, Multidisciplinary
Shu-guang Chen, Han-jun Gao, Yi-du Zhang, Qiong Wu, Zi-han Gao, Xin Zhou
Summary: Metal additive manufacturing technology has great potential in various fields, but the presence of residual stresses can significantly impact the performance and quality of the products. This paper provides a comprehensive review on the formation mechanisms, influence of process parameters, and prediction and control methods of residual stress in metal additive manufacturing.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Engineering, Civil
Xiantie Wang, Chuandong Xie, Zihan Jia, George Vasdravellis
Summary: An innovative PT connection using slender steel rectangles as energy-dissipating elements was proposed in this study, which showed that the energy-dissipating capacity can be increased by increasing the number of steel rectangles while the re-centering capacity remains unaffected. Experimental results indicated that specimens with a smaller width of steel rectangles exhibited typical three-plastic-hinge buckling, while smaller thickness of the steel segments led to a multi-wave out-of-plane buckling mode.
ENGINEERING STRUCTURES
(2022)
Article
Engineering, Marine
Navid Vosooghi, Srinivas Sriramula, Ana Ivanovi
Summary: This paper proposes a novel framework for developing the response surface of the Critical Buckling Force (CBF) of a subsea pipeline with lateral Out-of-Straightness (OoS). The contributing parameters in CBF are narrowed down through sensitivity studies, and the relationship between CBF variation, OoS curvature, and soil lateral mobilisation is established. A kriging-based surrogate model is adopted to calculate the CBF of a pipeline with arbitrary design variables, and Monte Carlo simulation is used to demonstrate the reliability of the research results.
Article
Engineering, Ocean
Zhenkui Wang, C. Guedes Soares
Summary: This study investigates the influence of distributed buoyancy sections on lateral buckling behavior of subsea pipelines through mathematical models and parametric discussions. Analysis shows that breakout resistance, residual resistance, and parameters of the distributed buoyancy section have significant effects on lateral buckling behavior.
APPLIED OCEAN RESEARCH
(2021)
Article
Engineering, Civil
Alexandre Rossi, Daniel Hideyuki Saito, Carlos Humberto Martins, Alex Sander Clemente de Souza
Summary: The investigation of different residual stress distribution models on the lateral torsional buckling strength of steel I-beams is crucial for their structural performance, as these models have a varying influence on the behavior of beams in numerical analysis.
Article
Engineering, Marine
Seong Yeon Park, Woe Tae Kim, Jae Hoon Choi, Seung Yoon On, Seong Su Kim
Summary: This study evaluated the pressure-resisting capabilities of corrugations by considering the residual stress generated during the deep drawing process, and confirmed a 16% decrease in pressure-resisting capability when residual stress and initial buckling mode were simultaneously considered. The results of this study can serve as a reference for setting design parameters to improve the pressure-resisting capability of a primary barrier.
Article
Engineering, Marine
Shen Li, Do Kyun Kim, Simon Benson
Summary: This paper investigates the effect of welding-induced residual stress on the strength of stiffened panels and finds that residual stress significantly reduces the ultimate compressive strength of the panels. The study concludes that residual stress in the plate causes a reduction in strength regardless of failure modes, while residual stress in the stiffener web dominates the strength reduction in cases of collapse due to beam-column buckling. The modified edge function approach is shown to be conservative compared to numerical results and is applicable only to stocky panels.
Article
Engineering, Electrical & Electronic
Jianwei Zhao, Weimin Jia, Fenggan Zhang, Fang He, Wei Jin, Nan Jiang
Summary: This paper discusses the joint state estimation problem for UAV aided 6G communications. The characteristics of the spatial channel are explored by considering the Jittering effects. A joint state estimation method is proposed utilizing the ISAC technique for designing the UAV attitude, communication, and control to improve system performance. Various simulation results are provided to verify the effectiveness of the method.
ELECTRONICS LETTERS
(2023)
Article
Environmental Sciences
Jiahe Yan, Zhaofa Zeng, Xueyu Zhao, Baizhou An, Lige Bai, Jianwei Zhao, Jing Li
Summary: Grotto rock structure detection is crucial for the protection and restoration of grottoes. Electrical resistivity tomography (ERT) is commonly used for this purpose. However, the traditional ERT measurements face challenges in terms of accuracy and resolution in cliff regions. To address this, a new BSC-ERT scheme is proposed, which combines borehole-to-surface ERT and surface-to-cliff ERT using the AM-BN array configuration. Numerical experiments show that this combination yields better imaging effects and a more reasonable detection range, making it recommended for future work. It is also demonstrated that the symmetric effect generated in the AM-BN array in the BS-ERT scheme can be suppressed with the combination of the SC-ERT scheme.
Article
Environmental Sciences
Fang He, Shuai Yan, Yao Ding, Zhensheng Sun, Jianwei Zhao, Haojie Hu, Yujie Zhu
Summary: In this paper, the Recursive RX with Extended Multi-Attribute Profiles (RRXEMAP) algorithm is proposed for hyperspectral anomaly detection. It combines EMAP and RX algorithm, and achieves good performance in accuracy and background purification.
Article
Physics, Applied
Zhilun Lu, Dongyang Sun, Ge Wang, Jianwei Zhao, Bin Zhang, Dawei Wang, Islam Shyha
Summary: It is crucial to discover lead-free materials with ultrahigh recoverable energy density (W-rec). In this work, a high W-rec of 4.51 J/cm(3) was obtained in lead-free Nd-doped AgNb0.8Ta0.2O3 antiferroelectric ceramics. Nd doping paired with Nb-site vacancies stabilized the antiferroelectric phase and improved energy storage efficiency. Furthermore, Nd and Ta co-doping contributed to electrical homogeneity and large breakdown strengths.
JOURNAL OF ADVANCED DIELECTRICS
(2023)
Article
Physics, Applied
Hongtian Li, Shiyu Zhou, Jianwei Zhao, Tingnan Yan, Yuxiao Du, Huanfu Zhou, Yongping Pu, Dawei Wang
Summary: In this study, novel NFIT-SZSHTN-xNN (where x = 0.1, 0.15, 0.2, 0.25) ceramics were fabricated, and the influence of co-doping of NN and SZSLITN on the phase structure, microstructure, and dielectric properties of lead-free ceramics was investigated. Dense microstructure with a grain size of about 5 μm was observed. When x = 0.25, a wide dielectric temperature stable range of -35.4-224.3°C with a low temperature coefficient of capacitance (<10%) was achieved, meeting the industry standard of Y9P specification. Furthermore, excellent energy storage performance, including a recoverable energy density of 2.4 J/cm(3), discharge efficiency of 71%, power density of 25.495 MW/cm(3), and discharge rate of <200 us, was simultaneously obtained, showing great potential for high-temperature capacitor applications.
JOURNAL OF ADVANCED DIELECTRICS
(2023)
Article
Metallurgy & Metallurgical Engineering
Ze-dong Wu, Xiao-chen Wang, Quan Yang, Dong Xu, Jian-wei Zhao, Jing-dong Li, Shu-zong Yan
Summary: The traditional rolling force model in tandem cold rolling mills does not consider the actual size and mechanical properties of the incoming material, leading to a mismatch between the deformation resistance setting and the actual state of the material, affecting the accuracy of the rolling force. This study developed an inverse calculation method to obtain the actual deformation resistance and established a support vector regression (SVR) model based on the cross-process dataset. The GWO algorithm was used to optimize the SVR model, resulting in improved accuracy and quality of the rolling process.
JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
(2023)
Article
Optics
Yongjing Deng, Xin Liang, Feiyang Li, Mengzhu Wang, Zijian Zhou, Jianwei Zhao, Feng Wang, Shujuan Liu, Qiang Zhao
Summary: This study proposes a strategy to achieve large Stokes shifts and high photoluminescence quantum yield in organic metal halide through large cation engineering. Two zero-dimensional antimony(III) chlorides, (TMA)(2)SbCl5 and (TMAA)(2)SbCl5, were designed and synthesized by screening ligands with different cationic volumes. Experimental and theoretical results show that the large cation can promote self-trapped excitons emission and improve stability. The as-prepared (TMAA)(2)SbCl5 microplate exhibits efficient active waveguide with a low loss coefficient of 6.07 x 10(-3) dB mu m(-1) due to its large Stokes shift (291 nm) and high photoluminescence quantum yield (98.3%).
LASER & PHOTONICS REVIEWS
(2023)
Article
Engineering, Multidisciplinary
Jiamin Zhang, Dong Xu, Xiaochen Wang, Jianwei Zhao, Hainan He, Quan Yang
Summary: In this study, samples with different microstructures were obtained by heat treatment, and the attenuation coefficients of ultrasonic waves were calculated based on experimental signals. The relationship between the attenuation coefficient and microstructure was analyzed using metallographic images. Characterization models of the average grain size of dual-phase titanium alloys based on ultrasonic attenuation were established. This study can provide a reference for online detection of grain size of metallic materials with complex microstructure based on laser ultrasonic technology.
Article
Astronomy & Astrophysics
Ali Mollaebrahimi, Christine Hornung, Timo Dickel, Daler Amanbayev, Gabriella Kripko-Koncz, Wolfgang R. Plass, Samuel Ayet San Andres, Sonke Beck, Andrey Blazhev, Julian Bergmann, Hans Geissel, Magdalena Gorska, Hubert Grawe, Florian Greiner, Emma Haettner, Nasser Kalantar-Nayestanaki, Ivan Miskun, Frederic Nowacki, Christoph Scheidenberger, Soumya Bagchi, Dimiter L. Balabanski, Ziga Brencic, Olga Charviakova, Paul Constantin, Masoumeh Dehghan, Jens Ebert, Lizzy Groef, Oscar Hall, Muhsin N. Harakeh, Satbir Kaur, Anu Kankainen, Ronja Knoebel, Daria A. Kostyleva, Natalia Kurkova, Natalia Kuzminchuk, Israel Mardor, Dragos Nichita, Jan-Hendrik Otto, Zygmunt Patyk, Stephane Pietri, Sivaji Purushothaman, Moritz Pascal Reiter, Ann-Kathrin Rink, Heidi Roesch, Anamaria Spataru, Goran Stanic, Alexandru State, Yoshiki K. Tanaka, Matjaz Vencelj, Helmut Weick, John S. Winfield, Michael I. Yavor, Jianwei Zhao
Summary: Direct mass measurements of neutron-deficient nuclides below 100Sn were conducted at FRS Ion Catcher (FRS-IC) in Germany. The masses of 14 ground states and two isomers were measured with high precision using the FRS-IC mass spectrometer. The results show good agreement between experiment and state-of-the-art shell model calculations.
Article
Chemistry, Analytical
Jianwei Zhao, Zewen Gu, Quan Yang, Jian Shao, Xiaonan Hou
Summary: This study proposes an FE spring model based on Timoshenko beam theory, which can accurately predict dynamic spring forces and coil clash phenomenon for nonlinear springs at high engine speeds. The results demonstrate that the proposed FE model provides sufficient accuracy while requiring significantly fewer computational resources compared to solid element models.
Article
Chemistry, Physical
Jianwei Zhao, Fangqing Wang, Xuan Lu, Tianhao Lv, Ying Li, Qiuyan Hao, Limin Liang, Hui Liu
Summary: Transition metal-based selenides (TMSe) have been studied as efficient pre-electrocatalysts for oxygen evolution reaction (OER). The crystallinity of TMSe greatly affects the conversion degree from TMSe to transition metal oxyhydroxides (TMOOH) during OER. A novel single-crystal (NiFe)3Se4 nano-pyramid array grown on NiFe foam exhibits excellent OER activity and stability, requiring only 170 mV to reach a current density of 10 mA cm-2 and can sustain for more than 300 h. The in situ formed heterointerface of (NiFe)OOH/(NiFe)3Se4 enhances the intrinsic activity by optimizing the adsorption of OER intermediates on Ni active sites.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Computer Science, Information Systems
Jianwei Zhao, Yuanhao Tao, Yanpeng Wang, Gang Zeng
Summary: This paper introduces a spider-type transport robot that can adapt to the complex environment of construction sites. The robot consists of a multi-spring suspension shock absorption system, four wheel motors, and a steering system, forming a rigid-flexible composite deformable mechanism. Motion simulation and mechanical analysis were conducted using Adams and Ansys to determine the critical stiffness of the spring and verify the robot's ability to cross obstacles. An electrical control system was designed to achieve the robot's following function and was validated in real vehicles through UWB edge computing.
JOURNAL OF GRID COMPUTING
(2023)
Correction
Computer Science, Information Systems
Xiaobin Xu, Wei Zhang, Jinru Cheng, Jianwei Zhao, Feng Qian
Article
Computer Science, Information Systems
Xiaobin Xu, Wei Zhang, Jinru Cheng, Jianwei Zhao, Feng Qian
Summary: Axial field flux-switching magnetic gear composite motor (AFFSMGCM) combines the advantages of axial field flux-switching permanent magnet machine (AFFSPMM) and magnetic gear (MG). In order to reduce the time and cost of design and optimization due to the complicated structure of AFFSMGCM, the nonlinear varying-network magnetic circuit (VNMC) is researched and developed for the machine. The topology of AFFSMGCM is introduced and an accurate VNMC model is established with consideration of magnetic saturation and leakage flux. Multi-objective optimization based on VNMC is carried out to obtain large torque and low torque ripple, and the VNMC model is validated using finite element analysis (FEA). The proposed VNMC improves the efficiency and accuracy of the design and optimization of the machine.
Article
Physics, Nuclear
Guang-Shuai Li, Jun Su, Bao-Hua Sun, Satoru Terashima, Jian-Wei Zhao, Xiao-Dong Xu, Ji-Chao Zhang, Ge Guo, Liu -Chun He, Wei -Ping Lin, Wen-Jian Lin, Chuan-Ye Liu, Chen-Gui Lu, Bo Mei, Zhi-Yu Sun, Isao Tanihata, Meng Wang, Feng Wang, Shi-Tao Wang, Xiu-Lin Wei, Jing Wang, Jun-Yao Xu, Jin-Rong Liu, Mei-Xue Zhang, Yong Zheng, Li-Hua Zhu, Xue-Heng Zhang
Summary: The EFCSs of stable and unstable nuclides were investigated with different projectile-target combinations and a wide range of incident energies. These data are crucial for constraining and developing theoretical reaction models and studying the propagation of galactic cosmic rays (GCR). A new EFCS measurement for 28Si on carbon at 218 MeV/nucleon was performed, and the impact of target thickness was accurately corrected. Comparative analysis of the results with existing measurements and model predictions revealed the limitations of current models in describing odd-even staggering in elemental distribution, except for the IQMD+GEMINI model.
