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Rigid-Flexible Coupling Dynamics analysis of Boom-Hoisting System of Wind Power Crane 8th

Rigid-Flexible Coupling Dynamics Analysis of Boom-Hoisting S...

引用

8th International conference on Advances in Construction Machinery and Vehicle engineering, ICACMVE 2023

作者： Cao, Xuyang Xu, Guoyang Hu, Yongchang Zhou, Jihong Kang, Jian School of Mechanical Engineering Dalian University of Technology Liaoning Dalian116024 China Taiyuan Heavy Industry CO. LTD. Shanxi Taiyuan030024 China

ISBN: (纸本)9789819718757

Based on the slenderness of wind power crane boom and the complexity of working environment, a mathematical model of rigid-flexible coupling dynamics including wind load and vibration characteristic analysis is carried out for the boom-hoisting system. the equivalent spring-damping system, spatial pendulum system and elastic double-force rod are used to simulate the elastic vibration of boom, the swing of lifting weight and the elastic vibration of wire rope, respectively. the kinematic characteristics of each component are described using a hybrid coordinate system. Simulation of wind loads through an instantaneous wind model consisting of the average and pulsating wind. Derivation of dynamic model for wind power crane under wind load based on the Lagrange equation. Taking a certain type of wind power crane as the research object, based on the derived mathematical model and ADAMS model, the response curves of boom and lifting weight are solved in MATLAB and ADAMS respectively for the rotary working condition, to verify the rationality and accuracy of the mathematical model and to obtain the influence of wind load on the swing angle of lifting weight. the analysis results provide a certain theoretical basis for crane structure design, control system design and wind turbine hoisting. © the Author(s) 2024.

关键词： Vibration analysis

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Phase sequence selection method of double-circuit transmission lines on the same tower based on a comprehensive index 8

Phase sequence selection method of double-circuit transmissi...

引用

2024 8th International conference on Energy Technology and Materials Science, ICETMS 2024

作者： Lu, Xiaoyan Hu, Jianqiao Peng, Zhengwei Ma, Peihua Zhang, Kun Gao, Feng Ningxia Ningdian Power Design Co. Ltd. Ningxia Yinchuan750001 China School of Electrical and Information Engineering North Minzu University Ningxia Yinchuan750021 China

the non-transposition erection of transmission lines will lead to the imbalance of electrical parameters, which will affect the protection and automatic reclosing. the best phase sequence arrangement is determined by comprehensively considering the comprehensive indexes (current imbalance, secondary current, and recovery voltage) of double transmission un-transposed lines with shared towers. PSCAD/EMTDC electromagnetic transient simulation software is applied to build a typical 750kV transmission line model for simulation analysis, and the comprehensive indexes under different phase sequence arrangements are studied. the analysis reveals that the arrangement of phase sequence exerts a significant consequence of the comprehensive index. the findings indicate that the margin and different secondary current and recovery voltage indexes, double transmission un-transposed lines with shared towers can be erected in the same direction or in different phase sequences to reduce the current imbalance. © Published under licence by IOP Publishing Ltd.

关键词： Electromagnetic transients

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8th International conference on Signal and Information Processing, Network and Computers, ICSINC 2021

8th International Conference on Signal and Information Proce...

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8th International conference on Signal and Information Processing, Network and Computers, ICSINC 2021

ISBN: (纸本)9789811933868

the proceedings contain 178 papers. the special focus in this conference is on Signal and Information Processing, Network and Computers. the topics include: Research on Real-Time Monitoring Method of Spot Beam Antenna Direction on Satellites;A Novel SOC Estimation Approach for the Lithium-Ion Battery Pack Using in the Deep Space Landers;analysis of Characteristics and Requirements of Large LEO Constellations Management;research on Space Project systems Technological Risk Assessment Based on Multi-level Fuzzy Comprehensive Evaluation;research on the System Construction of Spaceborne Adaptive Software and Its Key Technologies;air-Space-Ground Integrated Information Network: Technology, Development and Prospect;high-Resolution Satellite Radiation Big Data All-Statistical Intelligent Screening Technology;EMC System Control on XX-2 Satellite;transmission and Control of the Image Data from Remote Sensing Satellite to the Ground Station;micro-vibration Attenuation design, analysis and Verification for Agile Remote Sensing Satellite;LDPC Coding and Decoding Algorithm of Satellite Communication in High Dynamic Environment;Practice and Research on FMEA of Telecommunication Satellite System;characterization of On-Orbit Temperature and Pressure Performance for Hydrazine Propulsion System;On-Orbit Calibration of a 7-DOF Space Arm;correlation analysis and Forecast of Electric Vehicle Charging Stations Considering Seasonal Factors;Inversion Modeling Study of Dissolved Oxygen in Wangyu River Based on BP Neural Network;research on Satellite Energy Autonomous Security Strategy;Research and Development of High Speed and Large Bandwidth MIMO Data Transmission Test System;Continuous Evolution for Efficient Neural Architecture Search Based on Improved NSGA-III Algorithm;research on Individual Identification of Radar Emitter Based on Multi-domain Features.

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A Method for Supplementing the Knowledge Graph of Power User Service 8

A Method for Supplementing the Knowledge Graph of Power User...

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8th Annual International conference on Network and Information systems for Computers, ICNISC 2022

作者： Xu, Gaofeng Zhang, Zhizheng Southeast University-Monash University Joint Graduate School Southeast University Suzhou China School of Computer Science and Engineering Southeast University Nanjing China

ISBN: (纸本)9781665453516

In order to reduce the workload of manual supplementation of the knowledge graph of power user service and improve the efficiency of supplementation, a method that can assist manual supplementation of the knowledge graph of power user service is designed. this paper firstly introduces the structure of the knowledge graph of power user service and the design scheme of the graph supplementing method based on human-computer interaction, and defines the questions that need add into graph and the process that how to supplement the knowledge graph. then, the key technology in the graph supplementing method - user questions matching, is introduced. A deep learning-based user questions matching method is proposed and an algorithm suitable for questions matching in the power user service is selected through experimental comparison. Finally, analysis and summary are carried out. © 2022 IEEE.

关键词： Human computer interaction

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Study on the Bearing Capacity of Stringer of Large Civil Aircraft Composite Fuselage after Impact Damage 8

Study on the Bearing Capacity of Stringer of Large Civil Air...

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2022 8th International Forum on Manufacturing Technology and engineering Materials, IFEMMT 2022

作者： Wu, Yuzhen Liu, Fu Fuselage Department Shanghai Aircraft Design and Research Institute Shanghai China School of Intelligent Manufacturing and Control Engineering Shanghai Polytechnic University Shanghai China

this paper analyzes the post-impact pressure loss test data of eight test configurations of composite fuselage hat-type stringers and measures each composite stringer's residual compressive strength. It compares the bearing capacity and failure strain of different configurations of stringers with and without BVID initial impact damage. Based on the test data and analysis, the optimal configuration of the stringer is selected, which plays a guiding role in the structural design of composite panels. © Published under licence by IOP Publishing Ltd.

关键词： Bearing capacity

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Flight Test Scheme design of Flight Simulator Data Package Sound Acquisition for Civil Aircraft 8

Flight Test Scheme Design of Flight Simulator Data Package S...

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8th International conference on Mechanical engineering and Automation Science, ICMEAS 2022

作者： Zhixin, Guo COMAC Flight Test Center Flight Engineering Department Shanghai China

ISBN: (数字)9781665463058

ISBN: (纸本)9781665463058

the sound system of flight simulator civil aircraft can provide users with realistic cockpit sound environment, which leads to a higher level of immersion for users. Sound data can be obtained through flight simulator data package sound acquisition flight test, and can be used for modelling and identification of the sound system of flight simulator. In order to improve the efficiency of flight test and obtain accurate sound data, the flight test scheme design of flight simulator data package sound acquisition was researched in this paper. Take the flight simulator data package sound acquisition flight test for a certain aircraft for example, analysis of flight test requirements, flight test scheme design and data analysis and validation were described, which can provide useful reference for similar flight test. © 2022 IEEE.

关键词： Cockpits (aircraft)

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Development of Single Pulse Power Supply Based on three-Level GDT Topology 8

Development of Single Pulse Power Supply Based on Three-Leve...

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8th IEEE International conference on Energy Internet, ICEI 2024

作者： Xiang, Meng Li, Haoran Zhu, Yuyu Pan, Yue Xu, Yuting Fu, Cong Li, Huanjian Southwestern University of Science & Technology College of Information Engineering Mianyang China

ISBN: (纸本)9798331523558

this paper developed a single pulse power supply using a three-Level gas discharge tube (GDT) circuit. the main circuit of the pulse power supply consists of a high-voltage power supply peripheral circuit, a 3-Level GDT topology circuit, and a drive control circuit. In order to avoid the problem of high cost and difficult control of common high voltage switches, a low cost three-level GDT switch topology is adopted, the device meets the requirements of adjustable voltage output peak from 4500 to 5500V and pulse rise time within 2μS under the design specifications, verifying the application value of the three-Level GDT topology. In addition, through theoretical analysis and practical measurements, the factors affecting the pulse parameters in the pulse main circuit were discussed, and the circuit structure and parameters were optimized. this pulse power supply can not only be used as an initiating device for impact plate detonators, but also as a laboratory excitation pulse source for experimental research in strong EMP environments. © 2024 IEEE.

关键词： Gas discharge tubes

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Research on design Strategy for Open Space in High-Speed Railway Station Buildings from a Low-Carbon Perspective 8th

Research on Design Strategy for Open Space in High-Speed Rai...

引用

8th International conference on Energy and Environmental Science, ICEES 2024

作者： Yu, Jianzhao Dong, Lili Cheng, Xiang School of Architecture and Urban Planning Chongqing Jiaotong University Chongqing402247 China School of Architecture and Urban Planning Chongqing University Chongqing400045 China

ISBN: (纸本)9783031639005

Energy conservation and emissions reduction have become common societal goals in the context of global energy crises and climate change. Traditional spatial design of high-speed railway station buildings faces issues such as inadequate ventilation and poor thermal comfort. the significant energy consumption and carbon emissions resulting from the ventilation and heating equipment cannot be ignored. this study employs a comprehensive research approach that combines a literature metric analysis with a theoretical analysis. through a systematic review and analysis of research in the fields of spatial design strategies, carbon reduction strategies, and carbon emission quantification for high-speed railway station buildings, this study reveals that the application of open design in these buildings can break through traditional spatial limitations. this approach enhances space utilization and comfort, reduces energy consumption and carbon emissions, and consequently minimizes environmental impact. this study provides valuable insights and methods for the design and practice of high-speed railway station buildings. Additionally, it offers a new perspective on carbon emissions research, contributes to the sustainable development of high-speed railway stations, and provides guidance for the development of other transportation structures and urban planning. © the Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

关键词： Zero-carbon

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Crashworthiness analysis of conical energy absorber filled with aluminum foam 8th

Crashworthiness analysis of conical energy absorber filled w...

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8th International conference on Structural engineering, Mechanics and Computation (SEMC)

作者： Rogala, Michal Gajewski, Jakub Lublin Univ Technol Fac Mech Engn Lublin Poland

ISBN: (纸本)9781003348450;9781032391144

this article presents an analysis of dynamic crushing of thin-walled conical aluminum profiles. the profiles were subjected to the energy of 1700J. the cones had a variable upper diameter specified in the paper as D2. Samples were tested in three configurations, empty, half-filled and completely filled with aluminum porous material. the analysis was performed using the finite element method. On the basis of the data obtained, the crush effectiveness indicators were determined, which were used to determine the effect of wall inclination and foam material on the energy absorber performance.

关键词： Crashworthiness

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Seismic analysis of Torsional Irregularity Attributed to Shear Walls Location in Multi-Story Building- Case Study 8

Seismic Analysis of Torsional Irregularity Attributed to She...

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8th International engineering conference on advances in Computer and Civil engineering Towards engineering Innovations and Sustainability (IEC)

作者： Aijabi, Bushra Rasheed Design One Engn Consultancy Dubai U Arab Emirates

ISBN: (纸本)9781665478298

Nowadays, the investigation for the behavior of irregular structure during earthquakes become one of the most pressing demands for the design of multi-story buildings, it is a result to the evolution of design approaches towards the concept of showing the complexities and irregularities in the shape of the buildings Architecturally. Normally, the columns and shear walls for the building are providing the rigidity to resist the earthquake forces. therefore, the judicious choice for size and location of these elements within the configuration of building story plan is important. this study is focusing on one type of structural irregularity related to the location of shear walls in story plan and how can this contribute to the structural response during earthquake. three models have been analyzed for 10 typical story building, the first one is the base model (regular) where the group of shear walls located in the center of the typical plan while the second one is for the building when the walls shifted to the edge in X direction and the third model is for the case where walls are located at the corner of the building (shifted in X and Y direction). the performance of these frames has been evaluated as per the procedures described in (Uniform Building Code) UBC 97 code as well as the criteria to obtain the results for story drift, story displacement, time period, base shear, and overturning moments. Shifting the group of shear walls from center of the story plan to different locations created irregular frame for the models therefore the amplification factor has been used wherever the torsional irregularity is observed. All the results have been studied, analyzed, and compared in detail by plotting the data or arranging them in tables. It was noted in irregular models that the vertical elements are exposed to forces bigger than the regular model. the torsional irregularity for structure produced the bigger biaxial forces on the columns located further from the shear wall

关键词： irregular structure earthquakes shear walls structural response amplification factor torsional irregularity biaxial forces

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