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Hyungjoo CHOI, Husam NAJM
《结构与土木工程前沿(英文)》 2020年 第14卷 第1期 页码 199-214 doi: 10.1007/s11709-019-0592-9
Experimental study on slender buckling-restrained knee braces with round steel bar cores
《结构与土木工程前沿(英文)》 2023年 第17卷 第1期 页码 99-121 doi: 10.1007/s11709-022-0875-4
关键词: weld-free beam-to-column connections moment-resisting frame cyclic and compression loading tests buckling-restrained knee brace cover tube
Calculation method of load distribution on pipe threaded connections under tension load
Shoujun CHEN, Lianxin GAO, Qi AN
《机械工程前沿(英文)》 2011年 第6卷 第2期 页码 241-248 doi: 10.1007/s11465-011-0219-x
This paper presents a new calculation method that can calculate the load distribution on pipe threaded connections under tension load. On the basis of elastic mechanics, the new method was developed by analyzing each thread tooth, and a new deformation and covariant equation by making a mechanics analysis on each thread tooth was obtained. Compared with the traditional method proposed by the previous references, the new deformation and covariant equation could be used to describe the relation between the previous and the next thread tooth. By applying the new method on the sample of P-110S pipe threaded connection, the obtained results show that the load on thread tooth mainly concentrates on the four or five threads engaged and the middle teeth were not utilized well to bear the loads. The model offers a new way to calculate the loads carried on the thread teeth under tension load.
关键词: load distribution calculation method pipe threaded connections tension load
An adaptive sliding mode control technology for weld seam tracking
Jie LIU,Youmin HU,Bo WU,Kaibo ZHOU,Mingfeng GE
《机械工程前沿(英文)》 2015年 第10卷 第1期 页码 95-101 doi: 10.1007/s11465-015-0332-3
A novel adaptive sliding mode control algorithm is derived to deal with seam tracking control problem of welding robotic manipulator, during the process of large-scale structure component welding. The proposed algorithm does not require the precise dynamic model, and is more practical. Its robustness is verified by the Lyapunov stability theory. The analytical results show that the proposed algorithm enables better high-precision tracking performance with chattering-free than traditional sliding mode control algorithm under various disturbances.
关键词: weld seam tracking welding robotic manipulator adaptive control sliding mode control
《结构与土木工程前沿(英文)》 2021年 第15卷 第4期 页码 851-866 doi: 10.1007/s11709-021-0739-3
关键词: damage identification beam-to-column connection time-domain response optimization
Shoujun CHEN, Qiang LI, Qi AN,
《机械工程前沿(英文)》 2010年 第5卷 第3期 页码 302-307 doi: 10.1007/s11465-010-0018-9
关键词: conic threaded connections interference fit radial stress deformation finite element analysis (FEA)
State-of-the-art on resistance of bearing-type bolted connections in high strength steel
Guoqiang LI, Yifan LYU, Yanbo WANG
《结构与土木工程前沿(英文)》 2020年 第14卷 第3期 页码 569-585 doi: 10.1007/s11709-020-0607-6
关键词: High strength steel bolted connection bearing behavior design codes
Yasmin MURAD, Wassel AL BODOUR, Ahmed ASHTEYAT
《结构与土木工程前沿(英文)》 2020年 第14卷 第2期 页码 554-568 doi: 10.1007/s11709-020-0613-8
关键词: retrofitting CFRP sheets recycled concrete pulverised fuel ash silica fume cyclic beam-column connections
HUANG Yong, FAN Ding, FAN Qinghua
《机械工程前沿(英文)》 2007年 第2卷 第4期 页码 442-447 doi: 10.1007/s11465-007-0076-9
Fragility assessment of wood sheathing panels and roof-to-wall connections subjected to wind loading
《结构与土木工程前沿(英文)》 2021年 第15卷 第4期 页码 867-876 doi: 10.1007/s11709-021-0745-5
关键词: tornadoes wind loads low-rise buildings fragility analysis risk assessment structural failures
Local fracture properties and dissimilar weld integrity in nuclear power plants
Guozhen WANG, Haitao WANG, Fuzhen XUAN, Shantung TU, Changjun LIU
《机械工程前沿(英文)》 2013年 第8卷 第3期 页码 283-290 doi: 10.1007/s11465-013-0250-1
In this paper, the local fracture properties in a Alloy52M dissimilar metal welded joint (DMWJ) between A508 ferritic steel and 316 L stainless steel in nuclear power plants were investigated by using the single-edge notched bend (SENB) specimens, and their use in integrity assessment of DMWJ structures was analyzed. The results show that the local fracture resistance in the DMWJ is determined by local fracture mechanism, and which is mainly related to the microstructures and local strength mismatches of materials at the crack locations. The initial cracks always grow towards the materials with lower strength, and the crack path deviation is mainly controlled by the local strength mismatch. If the local fracture properties could not be used for cracks in the heat affected zones (HAZs), interface and near interface zones, the use of the fracture properties ( -resistance curves) of base metals or weld metals following present codes will unavoidably produce non-conservative (unsafe) or excessive conservative assessment results. In most cases, the assessment results will be potentially unsafe. Therefore, it is recommended to obtain and use local mechanical and fracture properties in the integrity assessment of DMWJs.
关键词: local fracture properties dissimilar metal welded joint integrity assessment strength mismatch crack growth path
Influence of loading ratio on flat slab connections at elevated temperature: A numerical study
Rwayda Kh. S. AL-HAMD, Martin GILLIE, Safaa Adnan MOHAMAD, Lee S. CUNNINGHAM
《结构与土木工程前沿(英文)》 2020年 第14卷 第3期 页码 664-674 doi: 10.1007/s11709-020-0620-9
关键词: concrete finite elements fire load-induced thermal strain punching shear
Parametric equations for notch stress concentration factors of rib–deck welds under bending loading
《结构与土木工程前沿(英文)》 2021年 第15卷 第3期 页码 595-608 doi: 10.1007/s11709-021-0720-1
关键词: notch stress concentration factor rib–deck weld parametric analysis regression analysis parametric equation
Characteristics of metal magnetic memory signals of different steels under static tension
Yiliang ZHANG, Ruibin GOU, Jimin LI, Gongtian SHEN,
《机械工程前沿(英文)》 2010年 第5卷 第2期 页码 226-232 doi: 10.1007/s11465-010-0012-2
关键词: metal magnetic memory (MMM) magnetic intensity (Hp) static tension weld
《结构与土木工程前沿(英文)》 页码 827-854 doi: 10.1007/s11709-023-0954-1
关键词: seismic performance continuous girder bridge grouting sleeve-prestressed tendon composite connections grouted sleeve connection design parameters
标题 作者 时间 类型 操作
Investigation of fatigue resistance of fillet-welded tube connection details for sign support structures
Hyungjoo CHOI, Husam NAJM
期刊论文
Calculation method of load distribution on pipe threaded connections under tension load
Shoujun CHEN, Lianxin GAO, Qi AN
期刊论文
An adaptive sliding mode control technology for weld seam tracking
Jie LIU,Youmin HU,Bo WU,Kaibo ZHOU,Mingfeng GE
期刊论文
Damage identification in connections of moment frames using time domain responses and an optimization
期刊论文
Calculation method of radial stress and deformation on conic threaded connections with interference fit
Shoujun CHEN, Qiang LI, Qi AN,
期刊论文
State-of-the-art on resistance of bearing-type bolted connections in high strength steel
Guoqiang LI, Yifan LYU, Yanbo WANG
期刊论文
Seismic retrofitting of severely damaged RC connections made with recycled concrete using CFRP sheets
Yasmin MURAD, Wassel AL BODOUR, Ahmed ASHTEYAT
期刊论文
Study of mechanism of activating flux increasing weld penetration of AC A-TIG welding for aluminum alloy
HUANG Yong, FAN Ding, FAN Qinghua
期刊论文
Fragility assessment of wood sheathing panels and roof-to-wall connections subjected to wind loading
期刊论文
Local fracture properties and dissimilar weld integrity in nuclear power plants
Guozhen WANG, Haitao WANG, Fuzhen XUAN, Shantung TU, Changjun LIU
期刊论文
Influence of loading ratio on flat slab connections at elevated temperature: A numerical study
Rwayda Kh. S. AL-HAMD, Martin GILLIE, Safaa Adnan MOHAMAD, Lee S. CUNNINGHAM
期刊论文
Parametric equations for notch stress concentration factors of rib–deck welds under bending loading
期刊论文
Characteristics of metal magnetic memory signals of different steels under static tension
Yiliang ZHANG, Ruibin GOU, Jimin LI, Gongtian SHEN,
期刊论文