Results 21 to 30 of about 213,216 (285)
Metals, 2022 The spherical pressure hull used in the manned cabin of deep-sea submersibles endures low-cycle fatigue problems during the process of cyclic submergence and recovery, but fatigue testing on its full-scale model is difficult to conduct.
Fang Wang +7 more
doaj +1 more source
Rigidity of frameworks on expanding spheres [PDF]
, 2017 A rigidity theory is developed for bar-joint frameworks in $\mathbb{R}^{d+1}$ whose vertices are constrained to lie on concentric $d$-spheres with independently variable radii.
Nixon, Anthony +3 more
core +2 more sources
An Improved Capacitive Sensor for Detecting the Micro-Clearance of Spherical Joints
Sensors, 2019 Due to the flexible and compact structures, spherical joints are widely used in parallel manipulators and industrial robots. Real-time detection of the clearance between the ball and the socket in spherical joints is beneficial to compensate motion ...
Wen Wang +8 more
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Turbulent diffusion and galactic magnetism [PDF]
, 2009 Using the test-field method for nearly irrotational turbulence driven by spherical expansion waves it is shown that the turbulent magnetic diffusivity increases with magnetic Reynolds numbers. Its value levels off at several times the rms velocity of the
Axel Brandenburg +2 more
core +1 more source
Configuration and Dynamic Analysis of Complex Docking Test Platform
Journal of Harbin University of Science and Technology, 2018 Small satellite rendezvous and docking is a key technology affecting the development of the space industry. In order to ensure the success rate of small satellites in space docking，it is necessary to carry simulation test of space docking through the ...
ZHANG Yuan, FAN Chang-zhen
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Dynamic modeling of spatial parallel mechanism with multi-spherical joint clearances
International Journal of Advanced Robotic Systems, 2019 The parallel mechanism has advantages of the high speed, high precision, strong carrying capacity, and high structural rigidity. Most of the previous studies concerning the dynamic modeling focused on planar mechanisms with revolute clearance joints or ...
Xiulong Chen, Chenghao Sun
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Buildings, 2023 Bolted spherical joints are widely used in space grid structures. However, the preload loss, which may arise from fabrication error, insufficient twist of the screw and some other unknown reasons can undermine the structural integrity and even lead to ...
Zheng Huang +4 more
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Kinematic model calibration of a collaborative redundant robot using a closed kinematic chain
Scientific Reports, 2023 In this paper, we propose a novel approach for the kinematic calibration of collaborative redundat robots, focusing on improving their precision using a cost-effective and efficient method.
Tadej Petrič, Leon Žlajpah
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Dynamics of Multibody Systems With Spherical Clearance Joints [PDF]
Journal of Computational and Nonlinear Dynamics, 2005 This work deals with a methodology to assess the influence of the spherical clearance joints in spatial multibody systems. The methodology is based on the Cartesian coordinates, with the dynamics of the joint elements modeled as impacting bodies and controlled by contact forces. The impacts and contacts are described by a continuous contact force model
Flores, Paulo +3 more
openaire +3 more sources
Actuators, 2018 This paper introduces the design of a fully-compliant Spherical Joint (SJ), obtained by the in-parallel connection of two identical open chains each composed of three equal circular flexible beams, having coincident centers of curvature and mutually ...
Farid Parvari Rad +3 more
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