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Singularity loci of an orthogonal spherical two-degree-of-freedom parallel mechanism
Jialun YANG, Feng GAO,
Frontiers of Mechanical Engineering 2009, Volume 4, Issue 4, Pages 379-385 doi: 10.1007/s11465-009-0075-0
Keywords: 2-DOF orthogonal spherical parallel mechanism singularity loci self-motions
Influence of kinematic redundancy on the singularity-free workspace of parallel kinematic machines
Jens KOTLARSKI, Bodo HEIMANN, Tobias ORTMAIER
Frontiers of Mechanical Engineering 2012, Volume 7, Issue 2, Pages 120-134 doi: 10.1007/s11465-012-0321-8
In this paper the effect of kinematic redundancy in order to reduce the singularity loci of the directkinematics and to increase the operational, i.e., singularity-free, workspace is demonstrated.
Keywords: parallel robots kinematic redundancy singularity avoidance operational workspace
Guizhong XIE,Dehai ZHANG,Jianming ZHANG,Fannian MENG,Wenliao DU,Xiaoyu WEN
Frontiers of Mechanical Engineering 2016, Volume 11, Issue 4, Pages 412-422 doi: 10.1007/s11465-016-0396-8
Keywords: computer aided engineering (CAE) boundary element method (BEM) near singularity sinh method coordinate
The nonlinear singularity phenomenon of low frequency oscillation in power system
Ma Jinglan,Wang Wei,Wan Jingsheng,Zhang Yongli
Strategic Study of CAE 2009, Volume 11, Issue 8, Pages 93-96
Keywords: LFO bifurcation theory nonlinear singularity
Alin STOICA, Doina PISLA, Szilaghyi ANDRAS, Bogdan GHERMAN, Bela-Zoltan GYURKA, Nicolae PLITEA
Frontiers of Mechanical Engineering 2013, Volume 8, Issue 1, Pages 70-79 doi: 10.1007/s11465-013-0365-4
Keywords: parallel robot minimally invasive surgery kinematics simulation
Po-Chih LEE, Jyh-Jone LEE
Frontiers of Mechanical Engineering 2012, Volume 7, Issue 2, Pages 163-187 doi: 10.1007/s11465-012-0324-5
Keywords: parallel manipulator schoenflies motion kinematics singularity workspace performance index
Abdelhak KHECHAI,Abdelouahab TATI,Abdelhamid GUETTALA
Frontiers of Mechanical Engineering 2014, Volume 9, Issue 3, Pages 281-294 doi: 10.1007/s11465-014-0307-9
In this study, the stress concentration factors (SCF) in cross-and-angle-ply laminated composite plates as well as in isotropic plates with single circular holes subjected to uniaxial loading is studied. A quadrilateral finite element of four-node with 32 degrees of freedom at each node, previously developed for the bending and mechanical buckling of laminated composite plates, is used to evaluate the stress distribution in laminated composite plates with central circular holes. Based up on the classical plate theory, the present finite element is a combination of a linear isoparametric membrane element and a high precision rectangular Hermitian element. The numerical results obtained by the present element compare favorably with those obtained by the analytic approaches published in literature. It is observed that the obtained results are very close to the reference results, which demonstrates the accuracy of the present element. Additionally, to determine the first ply failure (FPF) of laminated plate, several failure criterions are employed. Finally, to show the effect of ratio on the failure of plates, a number of figures are given for different fiber orientation angles.
Keywords: laminated composite plates stress concentration geometric singularity anisotropic effect
Ruiming LI,Yan-An YAO
Frontiers of Mechanical Engineering 2016, Volume 11, Issue 2, Pages 159-169 doi: 10.1007/s11465-016-0398-6
Keywords: duoprism eversion motion singularity over-constrained
Self-motions of 3-RPS manipulators
Josef SCHADLBAUER, Manfred L. HUSTY, Stéphane CARO, Philippe WENGERY
Frontiers of Mechanical Engineering 2013, Volume 8, Issue 1, Pages 62-69 doi: 10.1007/s11465-013-0366-3
Recently a complete kinematic description of the 3-RPS parallel manipulator was obtained using algebraic constraint equations. It turned out that the workspace splits into two components describing two kinematically different operation modes. In this paper the algebraic description is used to give a complete analysis of all possible self-motions of this manipulator in both operation modes. Furthermore it is shown that a transition from one operation mode into the other in a self-motion is possible.
Keywords: 3-RPS-manipulator singularity self-motion
Multifractal characteristics of cylindrical sludge drying
Weiyun WANG, Aimin LI,
Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 4, Pages 464-469 doi: 10.1007/s11783-009-0040-5
Keywords: multifractal characteristic multifractal singularity spectrum sewage sludge drying
Frontiers of Mechanical Engineering 2022, Volume 17, Issue 3, doi: 10.1007/s11465-022-0695-1
Keywords: translational parallel mechanism single loop multiple driving system workspace analysis singularity
Frontiers of Mechanical Engineering 2021, Volume 16, Issue 4, Pages 726-746 doi: 10.1007/s11465-021-0651-5
Keywords: parallel mechanism upper-limb rehabilitation singularity and workspace analyses performance evaluation
Fugui XIE,Xin-Jun LIU
Frontiers of Mechanical Engineering 2016, Volume 11, Issue 2, Pages 135-143 doi: 10.1007/s11465-016-0389-7
Keywords: parallel robot mobility inverse kinematics singularity transmission performance
Research on Bifurcation Property of Dike Rockfill of River Closure by End Dumping
He Changhai,Xiao Huanxiong,Hu Zhigen,Zhou Yihong
Strategic Study of CAE 2001, Volume 3, Issue 6, Pages 69-74
Keywords: river closure by end dumping slump static bifurcation singularity theory
Title Author Date Type Operation
Singularity loci of an orthogonal spherical two-degree-of-freedom parallel mechanism
Jialun YANG, Feng GAO,
Journal Article
Influence of kinematic redundancy on the singularity-free workspace of parallel kinematic machines
Jens KOTLARSKI, Bodo HEIMANN, Tobias ORTMAIER
Journal Article
Implementation of sinh method in integration space for boundary integrals with near singularity in potential
Guizhong XIE,Dehai ZHANG,Jianming ZHANG,Fannian MENG,Wenliao DU,Xiaoyu WEN
Journal Article
The nonlinear singularity phenomenon of low frequency oscillation in power system
Ma Jinglan,Wang Wei,Wan Jingsheng,Zhang Yongli
Journal Article
Kinematic, workspace and singularity analysis of a new parallel robot used in minimally invasive surgery
Alin STOICA, Doina PISLA, Szilaghyi ANDRAS, Bogdan GHERMAN, Bela-Zoltan GYURKA, Nicolae PLITEA
Journal Article
Singularity and workspace analysis of three isoconstrained parallel manipulators with schoenflies motion
Po-Chih LEE, Jyh-Jone LEE
Journal Article
Finite element analysis of stress concentrations and failure criteria in composite plates with circular holes
Abdelhak KHECHAI,Abdelouahab TATI,Abdelhamid GUETTALA
Journal Article
Self-motions of 3-RPS manipulators
Josef SCHADLBAUER, Manfred L. HUSTY, Stéphane CARO, Philippe WENGERY
Journal Article
Design and analysis of partially decoupled translational parallel mechanisms with single-loop structures
Journal Article
Optimum design and preliminary experiments of a novel parallel end traction apparatus for upper-limb rehabilitation
Journal Article
kinematic characteristics of a high-speed parallel robot with Schönflies motion: Mobility, kinematics, and singularity
Fugui XIE,Xin-Jun LIU
Journal Article