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Applying system dynamics to strategic decision making in construction
SangHyun LEE
《工程管理前沿(英文)》 2017年 第4卷 第1期 页码 35-40 doi: 10.15302/J-FEM-2017002
关键词: strategic project management construction management system dynamics feedback process hybrid simulation
Recent developments in passive interconnected vehicle suspension
Wade A. SMITH, Nong ZHANG,
《机械工程前沿(英文)》 2010年 第5卷 第1期 页码 1-18 doi: 10.1007/s11465-009-0092-z
关键词: interconnected suspensions rollover prevention vehicle dynamics ride comfort multibody system dynamics hydraulic system dynamics
Stability and dynamics of rotor system with 45° slant crack on shaft
Yanli LIN, Xiaohui SI, Fulei CHU
《机械工程前沿(英文)》 2011年 第6卷 第2期 页码 203-213 doi: 10.1007/s11465-011-0131-4
Crack on a shaft is one of the common damages in a rotor system. In this paper, transverse vibrations are calculated to compare the influences of transverse crack and slant crack on the rotor system. Results show that the vibration amplitude of the rotor system with a 45° slant crack on the shaft is larger than that with a transverse crack when the two types of crack have the same depth and the rotor system runs in the same condition. Stability and dynamic characteristics of the rotor system with a 45° slant crack on the shaft under torsional excitation are analyzed by considering opening and closing of the crack. It is shown that the instability of the transverse vibration of the rotor system increases with increasing difference between the bending stiffness in two main directions, and the vibration is stable when the two bending stiffness are identical. The spectrum analysis of the steady-state response reveals that the gravity and the eccentricity produce different frequency components, and when the two bending stiffness are identical, the multiple frequency components of the torsional excitation disappear. Further investigation shows that the vibration amplitudes in combined frequencies increase rapidly in transversal, torsional, and axial vibration with increasing slant crack depth. The results are helpful for the understanding the dynamic behavior of a rotor system with a slant crack on a shaft and can be used for the detection of the slant crack on a shaft.
关键词: rotor dynamics slant crack stability torsional excitation open and close
Xiaoxiao XU, Patrick X. W. ZOU
《工程管理前沿(英文)》 2021年 第8卷 第1期 页码 17-31 doi: 10.1007/s42524-019-0091-7
关键词: system dynamics construction management problem and recommendation research directions literature review human factor
Dynamics analysis of bladder-urethra system based on CFD
Qinghua JIN, Xiaojun ZHANG, Xiaoyang LI, Jianliu WANG,
《机械工程前沿(英文)》 2010年 第5卷 第3期 页码 336-340 doi: 10.1007/s11465-010-0027-8
关键词: bladder-urethra system stress urinary incontinence (SUI) computational fluid dynamics (CFD) urodynamics
Theory analysis and system identification methods on thermal dynamics characteristics of ballscrews
XIA Junyong, HU Youmin, WU Bo, SHI Tielin
《机械工程前沿(英文)》 2008年 第3卷 第4期 页码 408-415 doi: 10.1007/s11465-008-0061-y
Xiaohui WANG, Xianghua WEN, Hengjing YAN, Kun DING, Man HU
《环境科学与工程前沿(英文)》 2011年 第5卷 第1期 页码 92-98 doi: 10.1007/s11783-010-0254-6
关键词: ammonia-oxidizing bacteria (AOB) community dynamics terminal restriction fragment length polymorphism (T-RFLP) nitrification performance
芮筱亭
《中国工程科学》 2011年 第13卷 第10期 页码 76-82
射击精度差、试验用弹量大、发射不安全是制约现代火箭、火炮武器发展的三大技术难题。武器系统精度和发射安全性取决于武器系统动力学规律,发射动力学作为研究武器系统发射过程中受力和运动规律的一门新兴综合工程学科,在国际上已成为提高火箭和火炮武器系统射击精度和发射安全性的新技术突破口,为射击精度和发射安全性设计与试验提供新理论与技术。文章研究多体系统发射动力学理论与技术及其在火箭和火炮武器射击精度和安全性设计与试验中的应用。
Simulate oil spill weathering with system dynamic model
Aihaiti KASIMU, Junran DONG, Yuan BIAN, Desheng WU
《工程管理前沿(英文)》 页码 696-696 doi: 10.1007/s42524-019-0060-1
Multi-time scale dynamics in power electronics-dominated power systems
Xiaoming YUAN, Jiabing HU, Shijie CHENG
《机械工程前沿(英文)》 2017年 第12卷 第3期 页码 303-311 doi: 10.1007/s11465-017-0428-z
Electric power infrastructure has recently undergone a comprehensive transformation from electromagnetics to semiconductors. Such a development is attributed to the rapid growth of power electronic converter applications in the load side to realize energy conservation and on the supply side for renewable generations and power transmissions using high voltage direct current transmission. This transformation has altered the fundamental mechanism of power system dynamics, which demands the establishment of a new theory for power system control and protection. This paper presents thoughts on a theoretical framework for the coming semiconducting power systems.
关键词: power electronics power systems multi-time scale dynamics mass-spring-damping model self-stabilizing and en-stabilizing property multi-time scale power system stabilizer
陈威,周铖
《中国工程科学》 2014年 第16卷 第3期 页码 103-107
水资源承载力对一个国家或地区的经济增长、社会进步有着至关重要的影响,是水科学与系统科学交叉研究的热点。以武汉市为例,采用系统动力学方法将水资源子系统、经济子系统、社会子系统、生态环境子系统、水污染子系统进行有机结合,建立仿真模型,并用密切值法对所得指标值进行综合分析评价。最终得到了《武汉市国民经济和社会发展第十二个五年总体规划纲要》实施过程中的最佳方案。
信息系统动力学的基础和应用 Article
许建峰, 刘振宇, 王树良, 郑涛, 王雅实, 王赢飞, 党迎旭
《工程(英文)》 2023年 第27卷 第8期 页码 254-265 doi: 10.1016/j.eng.2022.04.018
Although numerous advances have been made in information technology in the past decades, there is still a lack of progress in information systems dynamics (ISD), owing to the lack of a mathematical foundation needed to describe information and the lack of an analytical framework to evaluate information systems. The value of ISD lies in its ability to guide the design, development, application, and evaluation of large-scale information system-of-systems (SoSs), just as mechanical dynamics theories guide mechanical systems engineering. This paper reports on a breakthrough in these fundamental challenges by proposing a framework for information space, improving a mathematical theory for information measurement, and proposing a dynamic configuration model for information systems. In this way, it establishes a basic theoretical framework for ISD. The proposed theoretical methodologies have been successfully applied and verified in the Smart Court SoSs Engineering Project of China and have achieved significant improvements in the quality and efficiency of Chinese court informatization. The proposed ISD provides an innovative paradigm for the analysis, design, development, and evaluation of large-scale complex information systems, such as electronic government and smart cities.
关键词: System-of-systems engineering Information theory Information measurement Information systems dynamics Judicial informatization
Computational fluid dynamics simulation of aerosol transport and deposition
Yingjie TANG, Bing GUO
《环境科学与工程前沿(英文)》 2011年 第5卷 第3期 页码 362-377 doi: 10.1007/s11783-011-0365-8
关键词: computational fluid dynamics (CFD) aerosol transport deposition
Nonlinear dynamics of a wind turbine tower
A. GESUALDO, A. IANNUZZO, F. PENTA, M. MONACO
《机械工程前沿(英文)》 2019年 第14卷 第3期 页码 342-350 doi: 10.1007/s11465-019-0524-3
关键词: nonlinear dynamics plastic shear failure modal approximation time history
朝鲜半岛构造系统地质环境演化及动力学机制的地球卫星遥感影像解译研究
胡东生,张华京,徐冰,田新洪,张国伟
《中国工程科学》 2007年 第9卷 第12期 页码 31-38
标题 作者 时间 类型 操作
Stability and dynamics of rotor system with 45° slant crack on shaft
Yanli LIN, Xiaohui SI, Fulei CHU
期刊论文
System dynamics analytical modeling approach for construction project management research: A critical
Xiaoxiao XU, Patrick X. W. ZOU
期刊论文
Dynamics analysis of bladder-urethra system based on CFD
Qinghua JIN, Xiaojun ZHANG, Xiaoyang LI, Jianliu WANG,
期刊论文
Theory analysis and system identification methods on thermal dynamics characteristics of ballscrews
XIA Junyong, HU Youmin, WU Bo, SHI Tielin
期刊论文
Community dynamics of ammonia oxidizing bacteria in a full-scale wastewater treatment system with nitrification
Xiaohui WANG, Xianghua WEN, Hengjing YAN, Kun DING, Man HU
期刊论文
Simulate oil spill weathering with system dynamic model
Aihaiti KASIMU, Junran DONG, Yuan BIAN, Desheng WU
期刊论文
Multi-time scale dynamics in power electronics-dominated power systems
Xiaoming YUAN, Jiabing HU, Shijie CHENG
期刊论文
Computational fluid dynamics simulation of aerosol transport and deposition
Yingjie TANG, Bing GUO
期刊论文