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Elevated temperature creep model of parallel wire strands
《结构与土木工程前沿(英文)》 页码 1060-1071 doi: 10.1007/s11709-023-0981-y
关键词: parallel wire strands experimental study elevated temperature creep model
Hysteretic behavior of cambered surface steel tube damper: Theoretical and experimental research
《结构与土木工程前沿(英文)》 2023年 第17卷 第4期 页码 606-624 doi: 10.1007/s11709-023-0925-6
关键词: cambered surface steel tube damper energy dissipation capacity finite element model hysteretic performance parametric study
Geometrical nonlinear deformation model and its experimental study on bimorph giant magnetostrictive
LIU Wei, JIA Zhenyuan, WANG Fuji, ZHANG Yongshun, GUO Dongming
《机械工程前沿(英文)》 2008年 第3卷 第3期 页码 313-317 doi: 10.1007/s11465-008-0048-8
关键词: magnetostrictive nonlinear magnetostriction inaccurate geometrical nonlinearity
Experimental and computational validation of a scaled train tunnel model using modal analysis
Janice B. D’SOUZA, Sangarapillai KANAPATHIPILLAI
《机械工程前沿(英文)》 2013年 第8卷 第4期 页码 420-428 doi: 10.1007/s11465-013-0281-7
Acoustic engineers are faced with the challenge of minimising reverberation time in their designs so as to contribute to the health and well-being of those traveling by train and those on the platforms. Although the problem is easy to identify, it is not as simple to solve. The acoustical environment of a train tunnel is complex, with a variety of noise contributing factors such as train announcements, speech of commuters, ventilation systems, electrical equipment and wheel and rail noise. As a result, there is some difficulty in modeling the complete acoustic environment with computational or acoustic first principles. In this study, an experimental rig was constructed to model the acoustic behavior within a tunnel. The modal properties for the 300 Hz to 1500 Hz range, including resonances and mode shapes were identified and were shown to successfully correspond to theoretical results and a computational model created in COMSOL using Finite Element Analysis.
关键词: reverberation time acoustic environment modal properties resonances
Experimental study on the establishment and maintenance of brain death model with pigs
ZHANG Shuijun, SHI Jihua, ZHAI Wenlong, SONG Yan, CHEN Shi
《医学前沿(英文)》 2007年 第1卷 第2期 页码 161-166 doi: 10.1007/s11684-007-0030-6
夏国星,钱振东,陈春,刘龑
《中国工程科学》 2012年 第14卷 第5期 页码 96-100
建立了考虑整桥变形的局部梁段模型,对钢桥面铺装在整桥及车载作用下的应力进行了计算,得到整桥变形的影响系数为1.17。建立初拟的两种协同作用试验方案的有限元模型,以局部梁段模型中铺装的最大应力应变值为参考值,对两种协同作用试验方案中相关结构参数进行了修正;在此基础上,为保证设计的协同作用试验模型与原型的一致性,将修正后的试验模型与局部梁段模型在控制点位应力值进行了对比;最终得到大跨径钢桥桥道系协同作用试验模型。研究成果可为钢桥面铺装室内试验模型的设计提供理论依据。
Numerical and experimental research of the characteristics of concentration solar cells
Zilong WANG, Hua ZHANG, Binlin DOU, Weidong WU, Guanhua ZHANG
《能源前沿(英文)》 2021年 第15卷 第2期 页码 279-291 doi: 10.1007/s11708-019-0637-8
关键词: concentration three-junction solar cell mathematical model electrical properties solar energy
Danxia ZHAO, Changrong LIAO, Qiong LIU, Jing LUO
《机械工程前沿(英文)》 2011年 第6卷 第3期 页码 312-317 doi: 10.1007/s11465-011-0235-x
In this paper, a small displacement-type magnetorheological grease (MRG) damper based on disk squeeze mode is proposed. The squeeze flow differential equation is obtained. The Navier slip condition is considered on the surfaces and the boundary compatible condition is established. The radial velocity profiles and the radial pressure distributions are derived respectively, and the mathematical stress expression is calculated. To verify rationality of analytical method, the MRG damper is designed and fabricated according to the technical requirements of an engine vibration isolation system. The experimental damping force from MTS870 Electro-hydraulic Servo with sine wave excitation shows that the proposed analytical method is feasible and provides the reference value for designing MRG damper based on disk squeeze mode.
Dynamic characteristics of a magnetorheological pin joint for civil structures
Yancheng LI,Jianchun LI
《机械工程前沿(英文)》 2014年 第9卷 第1期 页码 15-33 doi: 10.1007/s11465-014-0283-0
Magnetorheological (MR) pin joint is a novel device in which its joint moment resistance can be controlled in real-time by altering the applied magnetic field. The smart pin joint is intended to be used as a controllable connector between the columns and beams of a civil structure to instantaneously shift the structural natural frequencies in order to avoid resonance and therefore to reduce unwanted vibrations and hence prevent structural damage. As an intrinsically nonlinear device, modelling of this MR fluid based device is a challenging task and makes the design of a suitable control algorithm a cumbersome situation. Aimed at its application in civil structure, the main purpose of this paper is to test and characterise the hysteretic behaviour of MR pin joint. A test scheme is designed to obtain the dynamic performance of MR pin joint in the dominant earthquake frequency range. Some unique phenomena different from those of MR damper are observed through the experimental testing. A computationally-efficient model is proposed by introducing a hyperbolic element to accurately reproduce its dynamic behaviour and to further facilitate the design of a suitable control algorithm. Comprehensive investigations on the model accuracy and dependences of the proposed model on loading condition (frequency and amplitude) and input current level are reported in the last section of this paper.
关键词: Magnetorheological pin joint hyperbolic hysteresis model experimental testing frequency dependence
Experimental and numerical analysis of beam to column joints in steel structures
Gholamreza ABDOLLAHZADEH, Seyed Mostafa SHABANIAN
《结构与土木工程前沿(英文)》 2018年 第12卷 第4期 页码 642-661 doi: 10.1007/s11709-017-0457-z
关键词: beam to column connections experiments component method neural network model combinational modeling
阮静,胡丰
《中国工程科学》 2012年 第14卷 第5期 页码 57-61
泰州大桥中塔位于江中心,基础覆盖层高达200 m。通过多方面比选,基础采用58 m×44 m四角倒圆的矩形沉井,高76 m。为确保泰州大桥中塔沉井基础的安全和稳定,开展了1∶100的模型试验,获取了泰州大桥沉井极限承载力以及沉井埋深、土体含水量、侧壁摩阻力对极限承载力的影响。
Abdelwahhab KHATIR; Roberto CAPOZUCCA; Samir KHATIR; Erica MAGAGNINI
《结构与土木工程前沿(英文)》 2022年 第16卷 第8期 页码 976-989 doi: 10.1007/s11709-022-0840-2
关键词: damage prediction ANN BOA FEM experimental modal analysis
冯勤超,江孝感,孙锦
《中国工程科学》 2006年 第8卷 第4期 页码 19-23
分析了创造力活动过程的特点,讨论了影响人的创造力的认知因素,详细分析了创造力支持系统(CSS)的基本功能,并提出一种基于经验学习的创造力支持系统的层次结构。
《能源前沿(英文)》 2022年 第16卷 第2期 页码 263-276 doi: 10.1007/s11708-021-0791-7
关键词: ammonia mixed with syngas laminar flame speed kinetic model sensitivity analysis pathway analysis
标题 作者 时间 类型 操作
Hysteretic behavior of cambered surface steel tube damper: Theoretical and experimental research
期刊论文
Geometrical nonlinear deformation model and its experimental study on bimorph giant magnetostrictive
LIU Wei, JIA Zhenyuan, WANG Fuji, ZHANG Yongshun, GUO Dongming
期刊论文
Experimental and computational validation of a scaled train tunnel model using modal analysis
Janice B. D’SOUZA, Sangarapillai KANAPATHIPILLAI
期刊论文
Experimental study on the establishment and maintenance of brain death model with pigs
ZHANG Shuijun, SHI Jihua, ZHAI Wenlong, SONG Yan, CHEN Shi
期刊论文
Numerical and experimental research of the characteristics of concentration solar cells
Zilong WANG, Hua ZHANG, Binlin DOU, Weidong WU, Guanhua ZHANG
期刊论文
Analytical study on damping performances of magnetorheological grease damper based on disk squeeze mode and experimental
Danxia ZHAO, Changrong LIAO, Qiong LIU, Jing LUO
期刊论文
Dynamic characteristics of a magnetorheological pin joint for civil structures
Yancheng LI,Jianchun LI
期刊论文
Experimental and numerical analysis of beam to column joints in steel structures
Gholamreza ABDOLLAHZADEH, Seyed Mostafa SHABANIAN
期刊论文
Vibration-based crack prediction on a beam model using hybrid butterfly optimization algorithm with artificial
Abdelwahhab KHATIR; Roberto CAPOZUCCA; Samir KHATIR; Erica MAGAGNINI
期刊论文
Experimental and kinetic study on laminar flame speeds of ammonia/syngas/air at a high temperature and
期刊论文