Results 1 to 10 of about 14,996 (162)
Pitch Invariance Reveals Skill-Specific Coordination in Human Movement: A Screw-Theoretic Reanalysis of Golf Swing Dynamics [PDF]
Background: Skilled human movement, such as the golf swing, emerges from coordinated rotational and translational dynamics. This study investigates pitch—a screw-theoretic invariant defined as the ratio of linear to angular velocity along the ...
Wangdo Kim
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Dynamic Modeling Method of Multibody System of 6-DOF Robot Based on Screw Theory
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
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An Application of Screw Theory to the Jerk Analysis of a Two-Degrees-of-Freedom Parallel Wrist
In this work the velocity, acceleration, and jerk analyses of a two-degrees-of-freedom parallel wrist are approached by means of the theory of screws. For the sake of completeness, the finite kinematics of the manipulator is also investigated.
Jaime Gallardo-Alvarado +3 more
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Non-Inertial Dynamic Analysis of 3-SPS/U Parallel Platform by Screw Theory and Kane’s Method
This paper presents an improved method for the non-inertial dynamic analysis of the 3-SPS/U parallel platform (3-SPS/U PM), employing the screw theory and Kane’s method, where S, P, and U denote spherical, prismatic, and universal joints, respectively ...
Tianzhu Wang +7 more
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Calculation Method of Bearing Capacity of Screw Pile Based on Unified Strength Theory
Based on the unified strength theory and the Terzaghi limit equilibrium theory, the ultimate bearing capacity of screw pile has been deduced. The method to determine the critical pitch and calculate the ultimate bearing capacity of the screw pile in two ...
MA Jiakuan, LUO Lijuan, REN Xiang, SHI Hang, YIN Yimo
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A screw theory of static beams [PDF]
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
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Novel Reconfigurable Spherical Parallel Mechanisms with a Circular Rail
The COVID-19 pandemic has placed unprecedented stress on the world healthcare system and demonstrated the need for modern automated robotic solutions for numerous medical applications.
Pavel Laryushkin +3 more
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The closed-form solution of each rotation joint angle is the most direct and convenient method for humanoid robot arms to imitate the real-time motion of the human arm.
Feifei Zhong +5 more
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The Ilizarov external fixator plays an important role in the correction of complex malformed limbs. Our purpose in this work was to reveal the transmission of adjustable forces between the external fixator and the broken bone, and express the stress ...
Peng Su +4 more
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This paper presents a screw theory approach for the computation of the instantaneous rotation centers of indeterminate planar linkages. Since the end of the 19th century, the determination of the instantaneous rotation, or velocity centers of planar ...
Juan Ignacio Valderrama-Rodríguez +3 more
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