Results 191 to 200 of about 154,215 (248)
Biomechanical Analysis of Fixation Strength in Unstable Intertrochanteric Femoral Fracture Models Based on the Caput-Collum-Diaphyseal Angle of Cephalomedullary Nails and Position of Lag Screws. [PDF]
J Clin MedYoon YC, Lee SJ, Song HK.
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Developing a carbon footprint calculation method for product life cycle based on low-carbon design: A case study of the STAGE Bluetooth speaker. [PDF]
PLoS OneZhang Y, Yao S, Chen Y.
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Some of the next articles are maybe not open access.
Journal of Robotic Systems, 2003
AbstractThis study in projective geometry reveals that the principle of duality applies to the screw. Here, the screw is demonstrated to be an element of a projective three‐dimensional space (P3), right alongside the line. Dual elements for the screw and line are also revealed (the nut and spline).
Griffis, Michael, Rico, José María
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AbstractThis study in projective geometry reveals that the principle of duality applies to the screw. Here, the screw is demonstrated to be an element of a projective three‐dimensional space (P3), right alongside the line. Dual elements for the screw and line are also revealed (the nut and spline).
Griffis, Michael, Rico, José María
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Journal of Mechanical Design, 1981
It is shown that, if one considers the “total freedom” of instantaneous motion, three distinct types of screw systems arise. Of these only the ones which maintain the kinematic constraints—the so-called reciprocal screw systems—have been studied before. This paper introduces and studies the two new types, which we name “repelling” and “contrary” screws.
M. S. Ohwovoriole, B. Roth
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It is shown that, if one considers the “total freedom” of instantaneous motion, three distinct types of screw systems arise. Of these only the ones which maintain the kinematic constraints—the so-called reciprocal screw systems—have been studied before. This paper introduces and studies the two new types, which we name “repelling” and “contrary” screws.
M. S. Ohwovoriole, B. Roth
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Screw Theory in Lorentzian Space
Advances in Applied Clifford Algebras, 2018zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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An Introduction to Screw Theory
2020In 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. 2.2, such as the interchange operation of a screw, the screw coordinate transformation and the reciprocal ...
Qiu, Chen, Dai, Jian S.
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Screw Theory and Helicoidal Fields
Volume 1B: 25th Biennial Mechanisms Conference, 1998Abstract Chevallier [1991] regarded a screw as the geometric representation of a “helicoidal” field: i.e. a vector field with helicoidal properties. In this contribution, this identification is employed to develop a formal approach to systematically define “reduced acceleration state” and “reduced jerk state”.
Jaime Gallardo A., José María Rico M.
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2004
Abstract Robots and Screw Theory describes the mathematical foundations, especially geometric, underlying the motions and force-transfers in robots. The principles developed in the book are used in the control of robots and in the design of their major moving parts.
Joseph K Davidson, Kenneth H Hunt
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Abstract Robots and Screw Theory describes the mathematical foundations, especially geometric, underlying the motions and force-transfers in robots. The principles developed in the book are used in the control of robots and in the design of their major moving parts.
Joseph K Davidson, Kenneth H Hunt
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Finite and Instantaneous Screw Theory
2020This chapter presents fundamental concepts, expressions, operations, and properties of FIS theory. Firstly, the finite screw in quasi-vector form and its composition operation, i.e., the screw triangle product, is derived from dual quaternion for the first time.
Tao Sun, Shuofei Yang, Binbin Lian
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2012
Screw theory is a powerful mathematical tool for the analysis of spatial mechanisms. A screw consists of two three-dimensional vectors. A screw can be used to denote the position and orientation of a spatial vector, the linear velocity and angular velocity of a rigid body, or a force and a couple, respectively.
Zhen Huang, Qinchuan Li, Huafeng Ding
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Screw theory is a powerful mathematical tool for the analysis of spatial mechanisms. A screw consists of two three-dimensional vectors. A screw can be used to denote the position and orientation of a spatial vector, the linear velocity and angular velocity of a rigid body, or a force and a couple, respectively.
Zhen Huang, Qinchuan Li, Huafeng Ding
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