Results 51 to 60 of about 5,630,477 (241)
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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Non-Uniform Clearance between Rotor Surfaces and Its Effect on Machine Performance in Twin-Screw Compressors [PDF]
, 2012 The performance of twin-screw compressors is primarily affected by the clearance between a pair of meshing rotors. This study proposes a method for calculating the normal clearance along the contact line between rotors using two normal rack curves, which
Wu, Yu-Ren +2 more
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Advanced Engineering Materials, EarlyView.Despite benefits to storage stability and handleability of aluminum scrap, octadecyl phosphonic acid (ODPA) SAMs reduce the tensile strength of wires produced using friction‐induced recycling. Etching and methyl diphosphonic acid (MDPA) coatings, however, have little effect.
Timothy D. Goller +3 more
wiley +1 more source
The Kinematics of a New Schönflies Motion Generator Parallel Manipulator Using Screw Theory
MathematicsIn this work, an innovative Schönflies motion generator manipulator is introduced, featuring a parallel architecture composed of serial chains with mixed degrees of freedom. Fundamental kinematic aspects essential to any manipulator such as displacement,
Jaime Gallardo-Alvarado +4 more
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Advanced Functional Materials, EarlyView.Cell therapies typically rely on cold‐chain logistics and cryopreservation, limiting access and compromising cell quality. Here, a dual‐chamber device separates an oxygen‐supplying chamber from a hyaluronic acid cargo chamber, sustaining oxygen delivery for over 70 h and enabling ambient‐temperature shipment.
Daniel A. Domingo‐Lopez +9 more
wiley +1 more source
Jixie chuandong, 2005 The screw theory is one of powerful tools for type synthesis and kinematics analysis of lower-mobility parallel mechanisms. The constraint problem is studied in this paper based on screw theory for some of the lower-mobility parallel mechanisms. The DOF
罗继曼, 刘洋, 蔡光起
doaj
On the Theory of Screws in Elliptic Space [PDF]
Proceedings of the London Mathematical Society, 1883 n ...
openaire +2 more sources
Advanced Functional Materials, EarlyView.Here, we develop a high‐throughput algorithm that accelerates the elucidation of phase diagrams of topological spin textures using limited computational resources at high numerical accuracy. Applying this framework to the van der Waals magnet CrSBr, we unveiled a hierarchy of previously unknown topological textures (domain‐wall bimerons, bimeron chains,
Andrew Lyall +4 more
wiley +1 more source
Finite element modelling of screw fixation in augmented and non-augmented cancellous bone [PDF]
, 2012 This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.This research project presents a study of the fixation of screws in augmented and non-augmented cancellous bone at a microscopic scale. It is estimated that
Bennani Kamane, Philippe
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Kinematics and Dynamics of a Translational Parallel Robot Based on Planar Mechanisms
Machines, 2016 In this contribution, a novel translational parallel robot composed of an arrangement of mechanisms with planar motion is presented. Its mobility is analyzed and the position analysis is solved by using equations derived from mechanical constraints ...
Mario A. Garcia-Murillo +2 more
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