Results 31 to 40 of about 22,807 (338)
A RECONSTRUCTION OF THE GREEK-ROMAN REPEATING CATAPULT [PDF]
, 2010 An “automatic” repeating weapon used by the Roman army is presented. Firstly a short description is shown of the working principle of the torsion motor that powered the Greek-Roman catapults.
F. Russo, ROSSI, CESARE
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Dynamics Analysis of the Crank and Connecting Rod Mechanism with Clearance and Flexibility
Jixie chuandong, 2021 Clearance joint and connecting rod flexibility are main factors that affect the dynamics performance of mechanism，which determine the reliability of mechanism operation.
Tingting Li +3 more
doaj
Jixie chuandong, 2021 The crank-group driving mechanism is a kind of linkage truss mechanism with redundant constraints. Aiming at the mechanism characteristics，based on the dynamics model of ‘continuous contact model’，a virtual simulation model of the crank-group mechanism ...
Weiliang Yan
doaj
Dynamic Analysis of the Crank Mechanism through the Numerical Solution [PDF]
Manufacturing Technology, 2019 Dynamic analysis of crank mechanism is realised by relaxation method, where a connecting rod is modelled with three manners. In the first case the connecting rod is modelled as a rigid body, in the second case this one is modelled with two mass points and in the third case the connecting rod is modelled with three mass points. Results of all manners of
Marián Minárik, Ferdinand Bodnár
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Water clustering in polychloroprene [PDF]
, 2014 Water sorption has been studied gravimetrically for polychloroprene rubber samples, first at a fixed hygrometric ratio (98% HR) and several temperatures (25, 40, 60 and 80 °C) for samples of 1.8 and 3.8 mm thickness (Constant Temperature and Hygrometry ...
DAVIES, Peter +4 more
core +6 more sources
Deformation Control in Rest-to-Rest Motion of Mechanisms with Flexible Links [PDF]
, 2018 This paper develops and validates experimentally a feedback strategy for the reduction of the link deformations in rest-to-rest motion of mechanisms with flexible links, named Delayed Reference Control (DRC). The technique takes advantage of the inertial
Caracciolo, Roberto +2 more
core +3 more sources
Dynamic Simulation of Crank-Group Driving Mechanism with Clearance
The Open Mechanical Engineering Journal, 2015 For the crank-group driving mechanism, the assembly clearances can offer the possibility to remove overcoming processing errors. But the clearances inevitably affect the dynamic characteristics of the mechanism. In this paper, the dynamic simulation model of the crank-group driving mechanism is established by NX/Motion Simulation which is based on the ...
Liu Yansong, Cao Jujiang, Cai Dongfei
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Four-Dimensional Neuronal Signaling by Nitric Oxide: A Computational Analysis [PDF]
, 2000 Nitric oxide (NO) is now recognized as a transmitter of neurons that express the neuronal isoform of the enzyme nitric oxide synthase. NO, however, violates some of the key tenets of chemical transmission, which is classically regarded as occurring at ...
Husbands, Phil +2 more
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Selective Benzene Capture by Metal‐Organic Frameworks
Advanced Functional Materials, EarlyView.Metal‐organic frameworks (MOFs) hold significant potential for capturing benzene from air emissions and hydrocarbon mixtures in liquid phases. This capability stems from their precisely engineered structures, versatile chemistries, and diverse binding interactions.
Zongsu Han +4 more
wiley +1 more source
Inherent Problems in Designing Two-Failure Tolerant Electromechanical Actuators [PDF]
, 1984 An electromechanical ac-powered rotary actuated four-bar linkage system for rotating the Shuttle/Centaur deployment adapter is described. The essential features of the deployment adapter rotation system (DARS) are increased reliability for mission ...
Hornyak, S.
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