scholarly journals Kinematical Model of Currency Dynamics

2018 ◽  
Vol 7 ◽  
pp. 450-452
Author(s):  
Boris Boyarshinov ◽  
◽  
Nina Yuzhakova
Keyword(s):  
Kinematical Model

On the ratio of P-wave to S-wave corner frequencies for shallow earthquake sources

1974 ◽  
Vol 64 (4) ◽  
pp. 1159-1180 ◽  
Author(s):  
F. A. Dahlen
Keyword(s):  
Single Point ◽  
Three Dimensional ◽  
P Wave ◽  
Corner Frequency ◽  
S Wave ◽  
Earthquake Sources ◽  
Kinematical Model ◽  
Self Similar ◽  
Smooth Deceleration ◽  
Shallow Focus

abstract We construct a theoretical three-dimensional kinematical model of shallow-focus earthquake faulting in order to investigate the ratio of the P- and S-wave corner frequencies of the far-field elastic radiation. We attempt to incorporate in this model all of the important gross kinematical features which would arise if ordinary mechanical friction should be the dominant traction resisting fault motion. These features include a self-similar nucleation at a single point, a subsonic spreading of rupture away from that point, and a termination of faulting by smooth deceleration. We show that the ratio of the P-wave corner frequency to the S-wave corner frequency for any model which has these features will be less than unity at all points on the focal sphere.

On the Kinematics and Kinetics of Mechanical Seals, Rotors, and Wobbling Bodies

2005 ◽  
Author(s):  
Itzhak Green
Keyword(s):  
Equations Of Motion ◽  
Mechanical Seals ◽  
Kinematical Constraint ◽  
Lagrange’S Equations ◽  
Dynamic Analyses ◽  
Kinematical Model ◽  
Kinetics Of ◽  
Kinematics And Kinetics ◽  
Lagrange's Equations

Mechanical seals, rotors, and wobbling bodies are characterized by a kinematical constraint that prevents them from having integral motion with respect to their own frame. A valid kinematical model is a prerequisite to subsequent dynamic analyses. Three previous works have suggested distinctly different kinematical models to the same problem. The analysis herein presents yet another kinematical model that preserves (actually enforces) the proper kinematical constraint. The outcome reaffirms one of the previous models. The equations of motion are derived using Lagrange’s equations to complement results obtained previously by Newton-Euler mechanics.

Identification of Surface Generation Mechanisms Based on Process Feed-Back and Decomposition of Feed Marks

2011 ◽  
Vol 223 ◽  
pp. 505-513 ◽  
Author(s):  
Wit Grzesik ◽  
Sebastian Brol
Keyword(s):  
Integrated Approach ◽  
Surface Generation ◽  
Real Surface ◽  
Spring Back ◽  
Dynamic Interactions ◽  
Kinematical Model ◽  
Edge Sharpness ◽  
Generation Mechanisms ◽  
The Individual ◽  
Side Flow

This paper proposes a novel integrated approach to the prediction of surface generation mechanisms which takes into account both cutting process outputs and distortions of the individual feed marks in comparison to an ideal kinematical model. For this task, the recorded surface roughness profile was decomposed using special algorithms. The mechanisms of real surface generation considered include the plastic side flow and spring back effects, the cutting edge sharpness and its wear, and dynamic interactions between the tool and the workpiece. The computation procedure was verified for different workpiece materials in conjunction with uncoated and coated, sharp and worn, tools.

Effect of Conditioning Parameters on Surface Non-Uniformity of Polishing Pad in Chemical Mechanical Planarization

2008 ◽  
Vol 389-390 ◽  
pp. 498-503
Author(s):  
N. Qin ◽  
Dong Ming Guo ◽  
Ren Ke Kang ◽  
Feng Wei Huo
Keyword(s):  
Rotation Speed ◽  
Chemical Mechanical Planarization ◽  
Speed Ratio ◽  
Width Ratio ◽  
Next Generation ◽  
Stringent Requirement ◽  
Research Results ◽  
Polishing Pad ◽  
Kinematical Model ◽  
Better Than

The calculating model of surface non-uniformity of polishing pad and the kinematical model between polishing pad and conditioner are initially established. Then the effects of several conditioning parameters were investigated by using the two models. The results of simulation and calculation show that the width ratio of diamond band of conditoner and the rotation speed at the same speed ratio between pad and conditioner have little effect on the surface non-uniformity of polishing pad, while at high non-integer rotation speed ratio, the surface non-uniformity of polishing pad is better than that at low integer speed ratio. The research results are available to select appropriate conditioning parameters especially for the stringent requirement of within-wafer non-uniformity in next generation IC.

scholarly journals Applying Projective Geometry in Design of Worm Manufacturing

2013 ◽  
Vol 581 ◽  
pp. 77-81 ◽  
Author(s):  
Zsuzsa Balajti ◽  
József Ábel
Keyword(s):  
Mechanical Engineer ◽  
Euclidean Space ◽  
Projective Space ◽  
Production Process ◽  
Grinding Wheel ◽  
Space Model ◽  
Constant Pitch ◽  
Kinematical Model ◽  
Engineer Work ◽  
Conical Worm

The mathematical describing of the production process in mechanical engineer work in the euclidean space model and the base of the analytical describing of the projective space model is practically identical in the form, which makes it reasonable to discuss of the production geometry to approach of the projective geometrical negotiation in the . It is a fact that in one of the cases, using the approach of a projective geometrical connection and the mathematical-kinematical model resulted in expansion in the field of production precision, specifically considering the examination of the production of the conical worm by grinding wheel. The abstraction of the production geometry on projective space model has a few results in case of conical worms. The elliptical errors in production of the conical worm with arched or anything profile by grinding wheel can be eliminated by this method way to achieve the constant pitch, the torsion of profile and others.

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