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FREE VIBRATIONS OF ROCKET NOZZLES
Symposium on Structural Dynamics and Aeroelasticity, 1965Fig. 4 Flowfield of a parallel flow nozzle exhausting normal to a concave surface in a vacuum (h/re = 10, RJh = 1.1, R = 60 ft/°R, Me = 4.0, 6e = 0°, 7 = 1.2, Bs = 1.0). 2 Roberts, L., "The action of a hypersonic jet on a dust layer/' IAS Paper 63-50 (1963). 3 Van Dyke, M. and Gordon, H. D., "Supersonic flow past a family of blunt axisymmetric bodies,"
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Free Vibration of Flexible Cables
Volume 8: 27th Conference on Mechanical Vibration and Noise, 2015The free undamped vibrations of cables undergoing stretching, bending and twisting are investigated. To this end, a geometrically exact model of elastic cables accounting for bending and torsional stiffness is employed. The cable kinematics retain the full geometric nonlinearities.
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Free vibrations ofn-dimensional balls
Acta Mathematica Sinica, 1985We consider the existence of non-trivial solutions of the problem: \[ u_{tt}-\Delta u+g(u)=0,\quad u_{tt}-\Delta u-g(u)=0,\quad (x,t)\in B\times R \] under the boundary and periodicity conditions: \[ u|_{\partial B^ n}=0,\quad u(x,t+T)=u(x,t), \] where \(B^ n\) is an n-dimensional ball centered at the origin with diameter \(D,T=(b/a)D\); a,b are ...
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Transverse Vibration of Free-Free Beams
The Journal of the Acoustical Society of America, 1963Expressions are derived for the input impedance of damped free-free beams vibrating in their transverse modes, and for the transmissibility of one- and two-stage systems comprised of such beams and lumped elements of mass and compliance. The effect upon transmissibility and input impedance of varying the beam damping is considered in detail.
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Journal of Chemical Education, 1960
Describes the design of a vibration-free base, ideal as a support for delicate instruments.
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Describes the design of a vibration-free base, ideal as a support for delicate instruments.
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Vibration free turntable apparatus
The Journal of the Acoustical Society of America, 1986A platform that is magnetically suspended relative to a base. Magnet members are deployed atop and about the periphery of the base in fixedly secured relation thereto and oppositely polarized magnet members are secured to the bottom and about the periphery of the platform so that a magnetic repulsion exists between such magnet members in sufficient ...
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Vibration Free Interferometer Mirror
AIP Conference Proceedings, 2007Optic tables may be an obstacle for the interferometric studies when they are exposed to mechanical vibrations in the particular frequency range. To reduce the mechanical noise, a moveable mirror of the FTIR spectrometer was used as an interferometer mirror.
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