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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
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
Sina AMIRI; Ali Naghi DEHGHAN
《结构与土木工程前沿(英文)》 2022年 第16卷 第6期 页码 704-717 doi: 10.1007/s11709-021-0746-4
关键词: shallow tunneling method pile and rib method ground surface settlement subway station construction numerical modeling
A method for examining the seismic performance of steel arch deck bridges
Cheng-Yu LIANG, Airong CHEN,
《结构与土木工程前沿(英文)》 2010年 第4卷 第3期 页码 311-320 doi: 10.1007/s11709-010-0080-8
关键词: seismic performance earthquake damage steel deck arch bridge
《结构与土木工程前沿(英文)》 2021年 第15卷 第4期 页码 895-904 doi: 10.1007/s11709-021-0759-z
关键词: steel bridge deck pavement ultra-high-performance concrete epoxy resin composite structure bending fatigue performance
Predicting the capacity of perfobond rib shear connector using an ANN model and GSA method
Guorui SUN; Jun SHI; Yuang DENG
《结构与土木工程前沿(英文)》 2022年 第16卷 第10期 页码 1233-1248 doi: 10.1007/s11709-022-0878-1
关键词: perfobond rib shear connector shear strength ANN model global sensitivity analysis
Mahdi AREZOUMANDI
《结构与土木工程前沿(英文)》 2015年 第9卷 第1期 页码 91-103 doi: 10.1007/s11709-015-0274-1
关键词: bridge deck crack fiber shrinkage shrinkage reducing admixture
Fatigue evaluation of steel-concrete composite deck in steel truss bridge——A case study
Huating CHEN; Xianwei ZHAN; Xiufu ZHU; Wenxue ZHANG
《结构与土木工程前沿(英文)》 2022年 第16卷 第10期 页码 1336-1350 doi: 10.1007/s11709-022-0852-y
关键词: Fatigue assessment composite bridge deck rail-cum-road bridge fatigue stress analysis Model Code
Bending performance of composite bridge deck with T-shaped ribs
Qingtian SU, Changyuan DAI, Xu JIANG
《结构与土木工程前沿(英文)》 2019年 第13卷 第4期 页码 990-997 doi: 10.1007/s11709-019-0532-8
关键词: bending performance composite bridge deck T-shaped steel ribs
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
Zhengyi JIANG,
《机械工程前沿(英文)》 2010年 第5卷 第1期 页码 52-60 doi: 10.1007/s11465-009-0087-9
关键词: rib inclined contact boundary condition ribbed strip extremely thin elements pulling down of rib height finite element modelling
Ke WEI, Xiaoguang FAN, Mei ZHAN, Miao MENG
《机械工程前沿(英文)》 2018年 第13卷 第3期 页码 376-384 doi: 10.1007/s11465-018-0500-3
Billet optimization can greatly improve the forming quality of the transitional region in the isothermal local loading forming (ILLF) of large-scale Ti-alloy rib-web components. However, the final quality of the transitional region may be deteriorated by uncontrollable factors, such as the manufacturing tolerance of the preforming billet, fluctuation of the stroke length, and friction factor. Thus, a dual-response surface method (RSM)-based robust optimization of the billet was proposed to address the uncontrollable factors in transitional region of the ILLF. Given that the die underfilling and folding defect are two key factors that influence the forming quality of the transitional region, minimizing the mean and standard deviation of the die underfilling rate and avoiding folding defect were defined as the objective function and constraint condition in robust optimization. Then, the cross array design was constructed, a dual-RSM model was established for the mean and standard deviation of the die underfilling rate by considering the size parameters of the billet and uncontrollable factors. Subsequently, an optimum solution was derived to achieve the robust optimization of the billet. A case study on robust optimization was conducted. Good results were attained for improving the die filling and avoiding folding defect, suggesting that the robust optimization of the billet in the transitional region of the ILLF was efficient and reliable.
关键词: isothermal local loading forming rib-web component transitional region robust optimization dual response surface method
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
TANG Renhu, YIN Fei, WANG Haijun, CHEN Tingkuan
《能源前沿(英文)》 2007年 第1卷 第3期 页码 300-304 doi: 10.1007/s11708-007-0043-5
关键词: m · diameter critical pressure sub-critical pressure maximum
Zhiwen LIU , Zhengqing CHEN , Gao LIU , Xinpeng SHAO ,
《结构与土木工程前沿(英文)》 2009年 第3卷 第3期 页码 292-298 doi: 10.1007/s11709-009-0048-8
关键词: twin decks aerodynamic interference effects aerostatic coefficients wind tunnel test
标题 作者 时间 类型 操作
Parametric equations for notch stress concentration factors of rib–deck welds under bending loading
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
Comparison of shallow tunneling method with pile and rib method for construction of subway station in
Sina AMIRI; Ali Naghi DEHGHAN
期刊论文
A method for examining the seismic performance of steel arch deck bridges
Cheng-Yu LIANG, Airong CHEN,
期刊论文
Performance of steel bridge deck pavement structure with ultra high performance concrete based on resin
期刊论文
Predicting the capacity of perfobond rib shear connector using an ANN model and GSA method
Guorui SUN; Jun SHI; Yuang DENG
期刊论文
Feasibility of crack free reinforced concrete bridge deck from materials composition perspective: a state
Mahdi AREZOUMANDI
期刊论文
Fatigue evaluation of steel-concrete composite deck in steel truss bridge——A case study
Huating CHEN; Xianwei ZHAN; Xiufu ZHU; Wenxue ZHANG
期刊论文
Bending performance of composite bridge deck with T-shaped ribs
Qingtian SU, Changyuan DAI, Xu JIANG
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
Ribbed strip rolling by three-dimensional finite element method combining extremely thin array of elements
Zhengyi JIANG,
期刊论文
Robust optimization of the billet for isothermal local loading transitional region of a Ti-alloy rib-web
Ke WEI, Xiaoguang FAN, Mei ZHAN, Miao MENG
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
An investigation into the heat transfer characteristics of spiral wall with internal rib in a supercritical
TANG Renhu, YIN Fei, WANG Haijun, CHEN Tingkuan
期刊论文