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Stiffness analysis and experimental validation of robotic systems
Giuseppe CARBONE
《机械工程前沿(英文)》 2011年 第6卷 第2期 页码 182-196 doi: 10.1007/s11465-011-0221-3
Stiffness can be considered of primary importance in order to guarantee the successful use of any robotic system for a given task. Therefore, this paper proposes procedures for carrying out both numerical and experimental estimations of stiffness performance for multibody robotic systems. The proposed numerical procedure is based on models with lumped parameters for deriving the Cartesian stiffness matrix. Stiffness performance indices are also proposed for comparing stiffness performance. Then, an experimental procedure for the evaluation stiffness performance is proposed as based on a new measuring system named as Milli-CATRASYS (Milli Cassino Tracking System) and on a trilateration technique. Cases of study are reported to show the soundness and engineering feasibility of both the proposed numerical formulation for stiffness analysis and experimental validation of stiffness performance.
关键词: robotics stiffness performance numerical and experimental estimations
Numerical and experimental analyses of methane leakage in shield tunnel
《结构与土木工程前沿(英文)》 页码 1011-1020 doi: 10.1007/s11709-023-0956-z
关键词: shield tunnel harmful gas leakage numerical analysis laboratory test
Iman FATTAHI, Hamid Reza MIRDAMADI, Hamid ABDOLLAHI
《结构与土木工程前沿(英文)》 2020年 第14卷 第3期 页码 675-689 doi: 10.1007/s11709-020-0625-4
关键词: composite beam dynamic finite element degrees of freedom coupling experimental validation numerical validation
On braced trapezoidal corrugated steel shear panels: An experimental and numerical study
《结构与土木工程前沿(英文)》 2023年 第17卷 第3期 页码 396-410 doi: 10.1007/s11709-023-0934-5
关键词: trapezoidal corrugated plate steel shear panel braced steel shear panel experimental study buckling resistance.
《机械工程前沿(英文)》 2023年 第18卷 第2期 doi: 10.1007/s11465-022-0732-0
关键词: asteroid sampling wheel brush sampler discrete element method parameter calibration experimental research
M Helal Uddin, Nesrin Ozalp, Jens Heylen, Cedric Ophoff
《化学科学与工程前沿(英文)》 2018年 第12卷 第4期 页码 683-696 doi: 10.1007/s11705-018-1782-z
An innovative and efficient design of solar receivers/reactors can enhance the production of clean fuels via concentrated solar energy. This study presents a new jet-type burner nozzle for gaseous feedstock injection into a cavity solar receiver inspired from the combustion technology. The nozzle design was adapted from a combustion burner and successfully implemented into a solar receiver and studied the influence of the nozzle design on the fluid mixing and temperature distribution inside the solar receiver using a 7 kW solar simulator and nitrogen as working fluid. Finally, a thorough computational fluid dynamics (CFD) analysis was performed and validated against the experimental results. The CFD results showed a variation of the gas flow pattern and gas mixing after the burner nozzle adaptation, which resulted an intense effect on the heat transfer inside the solar receiver.
关键词: solar reactor nozzle CFD heat transfer mixing and recirculation
Experimental and numerical study on microcrack detection using contact nonlinear acoustics
Xiaojia CHEN, Yuanlin WANG
《结构与土木工程前沿(英文)》 2009年 第3卷 第2期 页码 137-141 doi: 10.1007/s11709-009-0028-z
关键词: microcrack detection contact nonlinearity numerical analysis
《结构与土木工程前沿(英文)》 页码 1228-1248 doi: 10.1007/s11709-023-0931-8
关键词: UHPC MT-DIC flexural behavior tensile behavior steel fiber polypropylene fiber
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
Pengxing YI,Peng HUANG,Tielin SHI
《机械工程前沿(英文)》 2016年 第11卷 第4期 页码 388-402 doi: 10.1007/s11465-016-0404-z
Wind turbine gearbox (WTG), which functions as an accelerator, ensures the performance and service life of wind turbine systems. This paper examines the distinctive modal properties of WTGs through finite element (FE) and experimental modal analyses. The study is performed in two parts. First, a whole system model is developed to investigate the first 10 modal frequencies and mode shapes of WTG using flexible multi-body modeling techniques. Given the complex structure and operating conditions of WTG, this study applies spring elements to the model and quantifies how the bearings and gear pair interactions affect the dynamic characteristics of WTGs. Second, the FE modal results are validated through experimental modal analyses of a 1.5 WM WTG using the frequency response function method of single point excitation and multi-point response. The natural frequencies from the FE and experimental modal analyses show favorable agreement and reveal that the characteristic frequency of the studied gearbox avoids its eigen-frequency very well.
关键词: wind turbine gearbox modal analysis finite element analysis modal frequency bearing equivalence
Numerical simulation and experimental verification of chemical reactions for SCR DeNO
Qiang ZHANG, Yonglin FAN, Wenyan LI
《化学科学与工程前沿(英文)》 2010年 第4卷 第4期 页码 523-528 doi: 10.1007/s11705-010-0520-y
关键词:
SCR
NO
Combination form analysis and experimental study of mechanical properties on steel sheet glass fiber
《结构与土木工程前沿(英文)》 2021年 第15卷 第4期 页码 834-850 doi: 10.1007/s11709-021-0743-7
关键词: steel sheet GFRP composite bar combination form numerical modeling mechanical properties test strength
Peng DENG, Boyi YANG, Xiulong CHEN, Yan LIU
《结构与土木工程前沿(英文)》 2020年 第14卷 第5期 页码 1215-1231 doi: 10.1007/s11709-020-0663-y
关键词: tubular T-joint carbon fiber-reinforced polymer degree of damage numerical analysis equivalent plastic strain
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
Design and Experimental Research on a New Pipe Rupture Valve
HU Guo-liang, XU Bing, YANG Hua-yong, ZHANG Yi-ding
《机械工程前沿(英文)》 2006年 第1卷 第1期 页码 26-32 doi: 10.1007/s11465-005-0009-4
A new pipe rupture valve for hydraulic elevator is designed. Mathematical models established for the hydraulic elevator system are used in numerical simulations on the Simulink environment of Matlab kits. The effects of different viscous damping diameters, inlet pressures of pipe rupture valve, and elevator loads on the hydraulic elevator system s dynamic performance are analyzed. Experimental research is also carried out using a hydraulic elevator experiment rig. The numerical simulations accord with experimental results in general. Dynamic performance indexes are assessed by the EN81-2 standard. The results show that the newly designed pipe rupture valve meets the designing requirement for hydraulic elevators.
关键词: Mathematical designing requirement numerical hydraulic elevator EN81-2 standard
标题 作者 时间 类型 操作
consistent geometric decomposition theorem to dynamic finite element of 3D composite beam based on experimentaland numerical analyses
Iman FATTAHI, Hamid Reza MIRDAMADI, Hamid ABDOLLAHI
期刊论文
Numerical simulation and experimental research on the wheel brush sampling process of an asteroid sampler
期刊论文
A new approach for fuel injection into a solar receiver/reactor: Numerical and experimental investigation
M Helal Uddin, Nesrin Ozalp, Jens Heylen, Cedric Ophoff
期刊论文
Experimental and numerical study on microcrack detection using contact nonlinear acoustics
Xiaojia CHEN, Yuanlin WANG
期刊论文
mechanical properties of steel- and polypropylene-reinforced ultra-high-performance concrete through numericalanalyses and experimental multi-target digital image correlation
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
Numerical analysis and experimental investigation of modal properties for the gearbox in wind turbine
Pengxing YI,Peng HUANG,Tielin SHI
期刊论文
Numerical simulation and experimental verification of chemical reactions for SCR DeNO
Qiang ZHANG, Yonglin FAN, Wenyan LI
期刊论文
Combination form analysis and experimental study of mechanical properties on steel sheet glass fiber
期刊论文
Experimental and numerical investigations of the compressive behavior of carbon fiber-reinforced polymer-strengthened
Peng DENG, Boyi YANG, Xiulong CHEN, Yan LIU
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