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Nonlinear dynamics and analysis of a four-bar linkage with clearance
Yuanguang TANG, Zongyu CHANG, Xiaogang DONG, Yafei HU, Zhenjiang YU
《机械工程前沿(英文)》 2013年 第8卷 第2期 页码 160-168 doi: 10.1007/s11465-013-0258-6
In this paper, nonlinear dynamic behavior of a four-bar linkage considering clearance is studied. The dynamic model of the linkage with a clearance between coupler and rocker is developed firstly. Then the dynamic equations of this mechanism are solved by a numerical method. According to the calculated response, compliance, force and trajectory of pin in joint bearing are obtained. Effects of clearance magnitude and the relationship between a mechanism with clearance and without clearance are studied. By using Poincare Map, it is proved that strange attractors or chaos exist in the dynamic response. In addition, phenomena of chaos, periodic response and subharmonic response also can be found in the special condition. Bifurcation diagram is used to suggest that bifurcation and fractal phenomena exist in the dynamic response of this mechanism.
关键词: four-bar linkage chaos bifurcation strange attractors dynamics
Optimal design of a linkage–cam mechanism-based redundantly actuated parallel manipulator
《机械工程前沿(英文)》 2021年 第16卷 第3期 页码 451-467 doi: 10.1007/s11465-021-0634-6
关键词: redundant actuation parallel manipulator linkage–cam mechanism Jacobian optimal design
The linkage mechanism between urban intelligence and low carbon innovation
Ming LIN
《工程管理前沿(英文)》 2019年 第6卷 第4期 页码 584-586 doi: 10.1007/s42524-019-0076-6
Ultrasonic measurement of tie-bar stress for die-casting machine
《机械工程前沿(英文)》 doi: 10.1007/s11465-021-0663-1
Shuchun LI, Bo DIAO, Youpo SU,
《结构与土木工程前沿(英文)》 2009年 第3卷 第4期 页码 378-383 doi: 10.1007/s11709-009-0064-8
关键词: beam with dispersed steel bar flame joints with special-shaped beam and column seismic behavior scale of dispersed steel bars
金心宇,夏琦,张唯,李兰娟
《中国工程科学》 2018年 第20卷 第2期 页码 92-98 doi: 10.15302/J-SSCAE-2018.02.014
我国已进入老龄化社会,而我国的养老建设事业仍处于不成熟阶段,养老问题已然成为我国亟待解决的重大问题之一。在国家相关政策的指引下,本文从我国国情出发,提出了一种以大型医院为诊疗主导,利用互联网实现与机构养老、社区养老和居家养老三种养老模式的有机连接,并融合老年病的人工智能云诊疗康复新技术的“医养智慧联动”养老模式。相关实践证明,利用互联网和人工智能及先进有效的综合诊疗技术来解决我国目前养老产业存在的问题具有重要的研究价值,也是一次非常有前景的尝试,符合国家的发展战略和相关政策。
Landing control method of a lightweight four-legged landing and walking robot
《机械工程前沿(英文)》 2022年 第17卷 第4期 doi: 10.1007/s11465-022-0707-1
关键词: landing and walking robot lunar exploration buffer landing compliance control
Distributed fiber optic monitoring of a CFA pile with a central reinforcement bar bundle
Yi RUI, Nicholas de BATTISTA, Cedric KECHAVARZI, Xiaomin XU, Mei YIN
《结构与土木工程前沿(英文)》 2021年 第15卷 第1期 页码 167-176 doi: 10.1007/s11709-020-0581-z
关键词: continuous flight auger pile static load test central reinforcement bar bundle distributed fiber optic sensor finite element load transfer
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
《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
Xiaolong ZHANG, Yu HUANG, Shuting WANG, Gen LI, Yuanlong XIE, Wei MENG
《机械工程前沿(英文)》 2021年 第16卷 第3期 页码 504-527 doi: 10.1007/s11465-020-0626-y
关键词: mobile robot multiple maneuvering mode motion planning tracking control receding horizon control
Pollution of NPEOs in four municipal sewage treatment plants in the north of China
HOU Shaogang, SUN Hongwen
《环境科学与工程前沿(英文)》 2007年 第1卷 第2期 页码 196-201 doi: 10.1007/s11783-007-0034-0
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
Shaking-moment balancing of mechanisms with principal vectors and momentum
V. van der WIJK
《机械工程前沿(英文)》 2013年 第8卷 第1期 页码 10-16 doi: 10.1007/s11465-013-0359-2
The design of shaking-moment-balanced linkages still is challenging. Considering moment balance in the very beginning of the design process of mechanisms is important for finding applicable solutions. For this purpose, the method of principal vectors is investigated, showing a compact notation of the angular momentum with respect to the center of mass. The moment balance conditions are derived for three elements in series from which balance solutions are synthesized and illustrated. From the application for moment balancing of a 4R four-bar linkage it is shown that the moment balancing of closed kinematic chains remains challenging.
关键词: shaking-moment balancing principal vector linkage angular momentum
《机械工程前沿(英文)》 2023年 第18卷 第3期 doi: 10.1007/s11465-023-0753-3
关键词: four-wheeled mobile robot obstacle-circumventing adaptive control adaptive anti-disturbance terminal sliding mode control sub-target dynamic tracking regression obstacle avoidance
标题 作者 时间 类型 操作
Nonlinear dynamics and analysis of a four-bar linkage with clearance
Yuanguang TANG, Zongyu CHANG, Xiaogang DONG, Yafei HU, Zhenjiang YU
期刊论文
Seismic behavior experimental study of frame joints with special-shaped column and dispersed steel bar
Shuchun LI, Bo DIAO, Youpo SU,
期刊论文
Distributed fiber optic monitoring of a CFA pile with a central reinforcement bar bundle
Yi RUI, Nicholas de BATTISTA, Cedric KECHAVARZI, Xiaomin XU, Mei YIN
期刊论文
Modeling of dynamic response of poroelastic soil layers under wave loading
Mehmet Bar?? Can üLKER
期刊论文
experimental study of mechanical properties on steel sheet glass fiber reinforced polymer composite bar
期刊论文
Motion planning and tracking control of a four-wheel independently driven steered mobile robot with multiple
Xiaolong ZHANG, Yu HUANG, Shuting WANG, Gen LI, Yuanlong XIE, Wei MENG
期刊论文
Pollution of NPEOs in four municipal sewage treatment plants in the north of China
HOU Shaogang, SUN Hongwen
期刊论文