scholarly journals Rotational shear effects on edge harmonic oscillations in DIII-D quiescent H-mode discharges

2016 ◽  
Vol 56 (7) ◽  
pp. 076011 ◽  
Author(s):  
Xi Chen ◽  
K.H. Burrell ◽  
N.M. Ferraro ◽  
T.H. Osborne ◽  
M.E. Austin ◽  
...  
Keyword(s):  
Harmonic Oscillations ◽  
Shear Effects ◽  
Rotational Shear

scholarly journals THE PROBLEM OF THE OSCILLATION OF THE ELASTIC LAYER BOUNDED BY RIGID BOUHDARIES

2018 ◽  
pp. 42-48
Author(s):  
Seitmuratov Angisin ◽  
Tileubay Sarsenkul ◽  
Toxanova Sveta ◽  
Ibragimova Nuraim ◽  
Doszhanov Bayanalui ◽  
...  
Keyword(s):  
Cylindrical Shell ◽  
Phase Velocity ◽  
Elastic Layer ◽  
Direct Relation ◽  
Anisotropic Layer ◽  
Harmonic Oscillations ◽  
Natural Oscillations ◽  
Integral Transformations ◽  
Oscillation Frequencies ◽  
Rotational Shear

In the case of harmonic oscillations of a cylindrical shell, the phase velocity is expressed in terms of the frequency of natural oscillations freely supported along the edges of the shell, and therefore, the study of waves in plane and circular elements has the most direct relation to the problem of determining its own forms and oscillation frequencies shells finite length. Below let us consider some problems of oscillation of an elastic layer bounded by rigid boundaries under the influence of a normal or rotational shear stress. The solutions of the problems under consideration are obtained by using integral transformations by the coordinate. Key words: harmonic oscillations, cylindrical shells, phase velocity, frequency, eigenvibrations, Bessel function, wave, anisotropic, layer.

On the Harmonic Oscillations for the Motion of a Dynamical System

2017 ◽  
Vol 13 (2) ◽  
pp. 4657-4670
Author(s):  
W. S. Amer
Keyword(s):  
Dynamical System ◽  
Numerical Solutions ◽  
Equation Of Motion ◽  
Parameter Method ◽  
Kutta Method ◽  
Small Parameter Method ◽  
Harmonic Oscillations ◽  
Pivot Point ◽  
Runge Kutta Method ◽  
High Consistency

This work touches two important cases for the motion of a pendulum called Sub and Ultra-harmonic cases. The small parameter method is used to obtain the approximate analytic periodic solutions of the equation of motion when the pivot point of the pendulum moves in an elliptic path. Moreover, the fourth order Runge-Kutta method is used to investigate the numerical solutions of the considered model. The comparison between both the analytical solution and the numerical ones shows high consistency between them.

A Tertiary thrust fault on the southern margin of the Bovey Basin

1971 ◽  
Vol 108 (1) ◽  
pp. 61-67 ◽  
Author(s):  
C. M. Bristow ◽  
D. E. Hughes
Keyword(s):  
Thrust Fault ◽  
Open Pit ◽  
Southern Margin ◽  
Thrust Plane ◽  
Borehole Drilling ◽  
Ball Clay ◽  
The Hill ◽  
Rotational Shear

SummaryGeological investigations and borehole drilling on the southern margin of the Bovey basin around Mainbow ball clay mine and Ringslade open pit have shown that Devonian slate up to 30 m thick is superimposed on Tertiary sediments. A drag fold beneath the slate indicates that the slate has moved eastwards over the Tertiary material. As the slate is relatively intact and not disaggregated, hillcreep cannot be responsible for the superimposition. A large landslip involving a rotational shear cannot be responsible, as the movement plane dips into the hill over too large an area. The southern margin of the Bovey basin is therefore interpreted as a thrust fault of Tertiary age, with thrust plane dipping 10° to 30° S. It is suggested that this is a rejuvenation of the Variscan thrust recognized in the Bickington area and further west in the Holne area and that the movement on the Tertiary thrust is related to the dextral wrench movement on the Sticklepath fault.

Sign in / Sign up

Export Citation Format

Share Document