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Simplified analytical solution for free vibration characteristics of Hardfill dam
XIAO Wei, HE Yunlong, ZHANG Yanfeng
《结构与土木工程前沿(英文)》 2008年 第2卷 第3期 页码 219-225 doi: 10.1007/s11709-008-0037-3
关键词: upstream concrete hydrodynamic pressure vibration one-dimensional applicability
Analytical dynamic solution of a flexible cable-suspended manipulator
Mahdi BAMDAD
《机械工程前沿(英文)》 2013年 第8卷 第4期 页码 350-359 doi: 10.1007/s11465-013-0271-9
Cable-suspended manipulators are used in large scale applications with, heavy in weight and long in span cables. It seems impractical to maintain cable assumptions of smaller robots for large scale manipulators. The interactions among the cables, platforms and actuators can fully evaluate the coupled dynamic analysis. The structural flexibility of the cables becomes more pronounced in large manipulators. In this paper, an analytic solution is provided to solve cable vibration. Also, a closed form solution can be adopted to improve the dynamic response to flexibility. The output is provided by the optimal torque generation subject to the actuator limitations in a mechatronic sense. Finally, the performance of the proposed algorithm is examined through simulations.
《机械工程前沿(英文)》 2021年 第16卷 第3期 页码 435-450 doi: 10.1007/s11465-021-0630-x
关键词: 7-DOF redundant manipulator inverse kinematics semi-analytical arm angle link offset
Hongtao WANG, Huayong WU
《环境科学与工程前沿(英文)》 2009年 第3卷 第1期 页码 112-128 doi: 10.1007/s11783-008-0067-z
关键词: solution library contaminant transport analytical solution dispersion and advection porous media type curve Green's function method (GFM)
Analytical solution for SH wave propagating through a graded plate of metamaterial
Jinfeng ZHAO, Yongdong PAN, Zheng ZHONG
《机械工程前沿(英文)》 2011年 第6卷 第3期 页码 301-307 doi: 10.1007/s11465-011-0238-7
A physical model for the shear horizontal (SH) wave propagating from left-handed material (LHM) through a graded or transition layer to right-handed material (RHM) has been proposed in this paper. After the comparison of the basic wave equations of the electromagnetic, longitudinal, and SH waves, it is found that they take similar differential form. The analytical solutions have been found for power law, hyperbolic, and polynomial profiles. Numerical waveforms of the amplitude and phase of the displacement are obtained for the corresponding profiles. It is found that the waveforms are symmetric for the power law and hyperbolic profiles, and that the waveform for the polynomial profile is shifted and non-symmetric. The shift along with the anti-symmetric profile may provide a way to monitor the wave behavior of the metamaterials.
关键词: left-handed material (LHM) metamaterial shear horizontal (SH) wave
《结构与土木工程前沿(英文)》 2023年 第17卷 第5期 页码 745-762 doi: 10.1007/s11709-023-0935-4
关键词: analytical model mechanical response multi-layered ground shallow tunneling ground surface load complex variable solution
Modeling of dynamic response of poroelastic soil layers under wave loading
Mehmet Bar?? Can üLKER
《结构与土木工程前沿(英文)》 2014年 第8卷 第1期 页码 1-18 doi: 10.1007/s11709-014-0233-2
关键词: dynamic response of soils coupled flow-deformation finite elements analytical solution harmonic waves
A real-life stability model for a large shield-driven tunnel in heterogeneous soft soils
Xinyu HU, Zixin ZHANG, Scott KIEFFER
《结构与土木工程前沿(英文)》 2012年 第6卷 第2期 页码 176-187 doi: 10.1007/s11709-012-0149-7
关键词: analytical solution shield-driven tunnel multilayered soil face stability
Lightweight design of an electric bus body structure with analytical target cascading
《机械工程前沿(英文)》 2023年 第18卷 第1期 doi: 10.1007/s11465-022-0718-y
关键词: electric vehicle body in white (BIW) lightweight analytical target cascading (ATC)
A review of optimization modeling and solution methods in renewable energy systems
《工程管理前沿(英文)》 页码 640-671 doi: 10.1007/s42524-023-0271-3
关键词: renewable energy system bibliometrics mathematical programming optimization models solution methods
Improved analytical model for residual stress prediction in orthogonal cutting
null
《机械工程前沿(英文)》 2014年 第9卷 第3期 页码 249-256 doi: 10.1007/s11465-014-0310-1
The analytical model of residual stress in orthogonal cutting proposed by Jiann is an important tool for residual stress prediction in orthogonal cutting. In application of the model, a problem of low precision of the surface residual stress prediction is found. By theoretical analysis, several shortages of Jiann’s model are picked out, including: inappropriate boundary conditions, unreasonable calculation method of thermal stress, ignorance of stress constraint and cyclic loading algorithm. These shortages may directly lead to the low precision of the surface residual stress prediction. To eliminate these shortages and make the prediction more accurate, an improved model is proposed. In this model, a new contact boundary condition between tool and workpiece is used to make it in accord with the real cutting process; an improved calculation method of thermal stress is adopted; a stress constraint is added according to the volume-constancy of plastic deformation; and the accumulative effect of the stresses during cyclic loading is considered. At last, an experiment for measuring residual stress in cutting AISI 1045 steel is conducted. Also, Jiann’s model and the improved model are simulated under the same conditions with cutting experiment. The comparisons show that the surface residual stresses predicted by the improved model is closer to the experimental results than the results predicted by Jiann’s model.
关键词: residual stress analytical model orthogonal cutting cutting force cutting temperature
Mahdi FAKOOR, Hadi PARVIZ
《结构与土木工程前沿(英文)》 2020年 第14卷 第6期 页码 1359-1371 doi: 10.1007/s11709-020-0658-8
关键词: composite plate spatially varying stochastic properties Galerkin method polynomial chaos approach semi-analytical approach
Zhang Harry, Yu Shaw
《环境科学与工程前沿(英文)》 2008年 第2卷 第3期 页码 267-273 doi: 10.1007/s11783-008-0058-0
关键词: representative hydrologic occurrence simulation approach scarcity alternative
《环境科学与工程前沿(英文)》 2021年 第15卷 第6期 doi: 10.1007/s11783-021-1414-6
• Challenges in sampling of NH3 sources for d15N analysis are highlighted.
关键词: Aerosol ammonium Atmospheric gaseous ammonia Isotope fingerprinting Isotope-based source apportionment Ammonia gas-to-particle conversion
Numerical solution, simulation and testing of the thermal dynamic characteristics of ball-screws
XIA Junyong, HU Youmin, WU Bo, SHI Tielin
《机械工程前沿(英文)》 2008年 第3卷 第1期 页码 28-36 doi: 10.1007/s11465-008-0007-4
关键词: numerical solution temperature corresponding temperature distribution end-most ball-screw
标题 作者 时间 类型 操作
Simplified analytical solution for free vibration characteristics of Hardfill dam
XIAO Wei, HE Yunlong, ZHANG Yanfeng
期刊论文
Precise semi-analytical inverse kinematic solution for 7-DOF offset manipulator with arm angle optimization
期刊论文
Analytical solutions of three-dimensional contaminant transport in uniform flow field in porous media
Hongtao WANG, Huayong WU
期刊论文
Analytical solution for SH wave propagating through a graded plate of metamaterial
Jinfeng ZHAO, Yongdong PAN, Zheng ZHONG
期刊论文
Mechanical responses of multi-layered ground due to shallow tunneling with arbitrary ground surface load
期刊论文
Modeling of dynamic response of poroelastic soil layers under wave loading
Mehmet Bar?? Can üLKER
期刊论文
A real-life stability model for a large shield-driven tunnel in heterogeneous soft soils
Xinyu HU, Zixin ZHANG, Scott KIEFFER
期刊论文
Uncertainty propagation in dynamics of composite plates: A semi-analytical non-sampling-based approach
Mahdi FAKOOR, Hadi PARVIZ
期刊论文
Critical flow-storm approach to total maximum daily load (TMDL) development: an analytical conceptual
Zhang Harry, Yu Shaw
期刊论文
δN-stable isotope analysis of NH: An overview on analytical measurements, source sampling and its source
期刊论文