Results 71 to 80 of about 68,552 (195)

A systematic experimental investigation of significant parameters affecting model tire hydroplaning [PDF]

open access: yes
The results of a comprehensive parametric study of model and small pneumatic tires operating on a wet surface are presented. Hydroplaning inception (spin down) and rolling restoration (spin up) are discussed.
Ehrlich, I. R., Wray, G. A.
core   +1 more source

Simulation and Analysis of Passive Rolling Compensation of High Sea Salvage System

open access: yesMATEC Web of Conferences, 2017
Method and device of a flexible interception and salvage system was introduced in this paper. In order to study the effect of wave motion on salvage operation, we proposed a passive wave compensation scheme that utilizes a combination of variable-pitch ...
Lin Liqun, Chen Zhixin
doaj   +1 more source

Fast-rolling relaxion

open access: yesJournal of High Energy Physics, 2019
We discuss new mechanisms to stop the relaxion field during inflation. They can be realized in a generic model, including the original model but in a quite different parameter region. We consider a fast-rolling relaxion field, which can go over the bumps
Masahiro Ibe, Yutaro Shoji, Motoo Suzuki
doaj   +1 more source

Prevention of parametric rolling through multi-objective optimisation [PDF]

open access: yes, 2015
IMO is developing new intact stability criteria which include parametric rolling and they will have an impact on some ship types. A benchmark study of those criteria on C11 containership is presented herein. Moreover, the authors use them as an objective
Boulougouris, Evangelos   +2 more
core  

Key technology of forming big spiral teeth shafts by fixed cross rolling

open access: yes工程科学学报, 2016
Compared with traditional machining processes,the plastic forming of big spiral teeth shafts has obvious advantage of high production efficiency and material utilization,but the forming of proper tooth graduation is difficult.
YANG Guang   +2 more
doaj   +1 more source

The south-pointing chariot on a surface

open access: yes, 2009
We examine closely the motion of the south-pointing chariot on a surface by taking into account the fact that both wheels have to roll without slipping. We firstly develop a procedure of successive approximations.
Linet, Bernard
core   +1 more source

THE EXPECTABLE MODEL OF PARAMETRIC RELIABILITY FOR POWERED ELECTROMAGNETIC UNITS OF RAILWAY ROLLING STOCK

open access: yesNauka ta progres transportu, 2010
The probabilistic model of parametric reliability of power electromagnetic valve contactors of rolling stock which helps to evaluate the probability of failures in condition of switching a contactor (the tractive force during the whole process of ...
M. O. Kostin, O. O. Marenych
doaj  

Nested forecast model comparisons: a new approach to testing equal accuracy [PDF]

open access: yes
This paper develops bootstrap methods for testing whether, in a finite sample, competing out-of-sample forecasts from nested models are equally accurate.
Michael W. McCracken, Todd E. Clark
core  

STUDY ON THE NON-LINEAR VIBRATION IN THE HYDRAULIC SCREW DOWN VERTICAL SYSTEM FOR ROLLING MILL

open access: yesJixie qiangdu, 2016
For vertical vibration systems tend to ignore the influence of hydraulic screw down system in the rolling mill,two degrees of freedom hydraulic screw down vertical vibration system model was established based on viscous damping between the hydraulic ...
ZHANG RuiCheng   +3 more
doaj  

三激波滚柱活齿行星传动原理研究

open access: yesJixie chuandong, 2013
Transmission theory is the basic of researching design theory,taking movable rolling teeth planetary transmission with three actuating wave as research object,a mathematical model of parametric equations of theoretical and practical tooth profiles is ...
黄南   +4 more
doaj  

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