On the Theory of Screw Propellers
The author who stated the outline of the theory of free-running screw propellers in his previous paper (the Journal of the Society of Naval Architects of Japan.No. 100, p. 15) calculated the characteristics of the practical propellers and proved that the theoretical values agree nearly with the experimental results, and suggested a method of design of ...
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Spatial Stiffness Analysis of the Planar Parallel Part for a Hybrid Model Support Mechanism
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
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Design of Formed Milling Cutter for Double-Helix Screw Based on Noninstantaneous Envelope Method
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
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Research on Displacement Mode and Path Tracking Method of Square Combined Deployable Mechanism
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.
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pyScrew4Mobility: Modul Python untuk Penentuan Mobilitas Manipulator Paralel Berbasis Teori Screw
This paper addresses the mobility determination of parallel manipulators (PMs) using screw theory with algebra methods on an open-source computer algebra package: Sympy (symbolic python).
Adriyan Adriyan
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Type synthesis of 6-DOF mobile parallel link mechanisms based on screw theory
Mobile parallel mechanisms (MPMs), which are parallel mechanisms with moveable bases, have previously been proposed to resolve the limited workspace of conventional parallel mechanisms.
Siying LONG +2 more
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Numerical Analysis of Performance, Rotor Temperature Distributions, and Rotor Thermal Deformation of an R134a Screw Compressor [PDF]
A numerical analysis is performed to systematically calculate the performance, rotor temperature distributions, and rotor thermal deformation of an R134a screw compressor. The analysis procedure includes three major steps.
Hsieh, Wenhsin +3 more
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Solid–liquid transport in a modified co-rotating twin-screw extruder-dynamic simulator and experimental validations [PDF]
This work presents a dynamic transport model of a solid–liquid media through a twin-screw extruder (TSE). The application under consideration is the solid–liquid extraction of solute from raw plant substrate.
Prat, Laurent E. +4 more
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Reduced Dynamic Modeling for Heavy-Duty Hydraulic Manipulators With Multi-Closed-Loop Mechanisms
A reduced dynamic modeling approach is introduced to systematically establish explicit closed-form dynamic equations for the main motion system of a heavy-duty hydraulic manipulator with multi-closed-loop mechanisms.
Yi Zhang, Wenhua Ding, Hua Deng
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Non-Uniform Clearance between Rotor Surfaces and Its Effect on Machine Performance in Twin-Screw Compressors [PDF]
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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