Results 31 to 40 of about 6,838,442 (240)
Mechanism and Machine Theory, 2020 The revelation of mechanism bifurcation is essential in the design and analysis of reconfigurable mechanisms. The first- and second-order based methods have successfully revealed the bifurcation of mechanisms.
Xi Kang +3 more
semanticscholar +1 more source
Spatial Stiffness Analysis of the Planar Parallel Part for a Hybrid Model Support Mechanism
Applied Sciences, 2020 The hybrid aircraft model support mechanism is subjected to six directional forces in the experiment, and high spatial stiffness requirement of the parallel part is the guarantee for the stability of the aircraft model.
Jiawei Gu, Zhijiang Xie, Xiaoyong Wu
doaj +1 more source
Screw dislocation in zirconium: An ab initio study [PDF]
, 2012 Plasticity in zirconium is controlled by 1/3 screw dislocations gliding in the prism planes of the hexagonal close-packed structure. This prismatic and not basal glide is observed for a given set of transition metals like zirconium and is known to be ...
A. Akhtar +14 more
core +3 more sources
Design of Formed Milling Cutter for Double-Helix Screw Based on Noninstantaneous Envelope Method
Advances in Mechanical Engineering, 2013 The design theory and method of formed milling cutter for double-helix screw of progressing cavity pump are presented. Through analyzing the shape and characteristic parameters of double-helix screw, the helicoids equation and axial curve equation of ...
Yun Li +3 more
doaj +1 more source
Mechanism and Machine Theory, 2020 Establishing complete, continuous and minimal error models is fundamentally significant for the calibration of robotic manipulators. Motivated by practical needs for models suited to coarse plus fine calibration strategies, this paper presents a screw ...
Yin Fuwen +4 more
semanticscholar +1 more source
Type Synthesis Method for Parallel Robots With Special Topologies
IEEE Access, 2023 This contribution presents a type synthesis method for parallel robots with special topologies. First, we defined the constraint-incidence matrix (CIM) to describe serial chains by utilizing the geometric properties of screw theory, revealing the motion ...
Hongpeng Chu +3 more
doaj +1 more source
Enhanced Eshelby twist on thin wurtzite InP nanowires and measurement of local crystal rotation [PDF]
, 2011 We have performed a detailed study of the lattice distortions of InP wurtzite nanowires containing an axial screw dislocation. Eshelby predicted that this kind of system should show a crystal rotation due to the dislocation induced torque.
A. J. Craven +9 more
core +4 more sources
Research on Displacement Mode and Path Tracking Method of Square Combined Deployable Mechanism
Xibei Gongye Daxue Xuebao, 2019 The motion path of the developable mechanism can not only grasp whether the mechanism can move according to the expected law, but also provide theoretical support for motion control.
doaj +1 more source
Type Synthesis of 4-DOF Non-Overconstrained Parallel Mechanisms with Symmetrical Structures
Machines, 2022 This paper presents the type synthesis of 4-DOF non-overconstrained parallel mechanisms (PMs) with symmetrical structures. A special topological structure that includes two intermediate platforms and one moving platform is employed. Constraint conditions
Wei Ye, Qinchuan Li, Xinxue Chai
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A screw theory of static beams [PDF]
Proceedings 2001 IEEE/RSJ International Conference on Intelligent Robots and Systems. Expanding the Societal Role of Robotics in the the Next Millennium (Cat. No.01CH37180), 2002 We derive the deflection equation of a simple beam using the screw theory. The effects of tension, torsion and bending of the beam can be unified into a single equation. We begin by looking at the compliance matrix for small elements of the beam. This is loosely based on the work by von Mises (1924).
J.M. Selig, X. Ding
openaire +1 more source