Results 11 to 20 of about 5,630,477 (241)

An Introduction to Screw Theory

open access: yes, 2021
In this chapter, screw theory is introduced as a preliminary study to give readers an overview of screw theory and its application in compliant mechanism designs. The definition of a screw, as well as the key screw operations, are given in Sect.
Qiu, Chen, Dai, Jian S.
core   +3 more sources

Simplified theory of the Archimedian screws [PDF]

open access: yesJournal of Hydraulic Research, 2009
The Archimedean screw pump is one of the oldest hydraulic machines. Today, it is employed in pumping as well as - operating in reverse - in an energy conversion role.
Muller, Gerald   +3 more
core   +5 more sources

A geometrical introduction to screw theory [PDF]

open access: yesEuropean Journal of Physics, 2013
This work introduces screw theory, a venerable but little known theory aimed at describing rigid body dynamics. This formulation of mechanics unifies in the concept of screw the translational and rotational degrees of freedom of the body.
Minguzzi, Ettore
core   +3 more sources

Dynamic Modeling Method of Multibody System of 6-DOF Robot Based on Screw Theory

open access: yesMachines, 2022
An accurate dynamic model is a prerequisite for realizing precise control of industrial robots. The dynamics research of multi-degree of freedom (DOF) robots is relatively unexplored and needs to be solved urgently.
Jun Cheng   +5 more
doaj   +2 more sources

STORM: Screw Theory Toolbox For Robot Manipulator and Mechanisms

open access: yes2020 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), 2020
Screw theory is a powerful mathematical tool for the kinematic analysis of mechanisms and has become a cornerstone of modern kinematics. Although screw theory has rooted itself as a core concept, there is a lack of generic software tools for ...
Keerthi Sagar Somenedi Rao.   +7 more
core   +4 more sources

A screw theory of static beams [PDF]

open access: yesProceedings 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   +2 more sources

Replication of mixing achieved in large co-rotating screw extruder using a novel laboratory 10-100g minimixer [PDF]

open access: yes, 2008
YesWhen compounding polymers with additives to develop materials at specifications (colouring plastics is the simplest example), the difficulties is in getting the formulation right the first time.
Benkreira, Hadj   +3 more
core   +4 more sources

Numerical analysis of the hydrodynamic behaviour of immiscible metallic alloys in twin-screw rheomixing process [PDF]

open access: yes, 2006
A numerical analysis by a VOF method is presented for studying the hydrodynamic mechanisms of the rheomixing process by a twin-screw extruder (TSE). The simplified flow field is established based on a systematic analysis of flow features of immiscible ...
Tang, H, Wrobel, L C, Fan, Z
core   +5 more sources

An approximate model for cancellous bone screw fixation [PDF]

open access: yes, 2013
This is the author's accepted manuscript. The final published article is available from the link below. Copyright @ 2013 Taylor & Francis.This paper presents a finite element (FE) model to identify parameters that affect the performance of an improved ...
Brown, CJ   +9 more
core   +1 more source

Solid–liquid transport in a modified co-rotating twin-screw extruder-dynamic simulator and experimental validations [PDF]

open access: yes, 2004
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
core   +1 more source

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