Results 171 to 180 of about 749 (212)
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Biomimetic design of woodpecker for shock and vibration protection
2014 IEEE International Conference on Robotics and Biomimetics (ROBIO 2014), 2014Vibration isolation or protection of sensitive electronic devices/units is an ever-increasing demand in engineering practice. This study presents bio-inspired designs for this objective. It is known that, woodpeckers can drum the surface of a trunk at a high speed of 18–22 times per second with an acceleration of more than 1000g, but the damage of ...
Jing Bian, Xing Jian Jing
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Active and Parametric Vibration Protection of Transient Vibrations
2016This chapter is devoted to the analysis of transient vibration of linear dynamical systems. The Laplace transform method and Heaviside expansion method are explained. These methods are applied to analysis of linear oscillators subjected to different types of force and kinematic excitation (shock, impulse, recurrent instantaneous pulses).
Igor A. Karnovsky, Evgeniy Lebed
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Bulletin Series of Physics & Mathematical Sciences, 2021
Creation of vibro-protective devices on rolling contact bearings is widely spread in transportation technology and seismic protection. In this work, mathematical modeling of the oscillation movements of the elastic plate will be considered. The equations of motion for elastic plate on vibration supports bounded by high-order rotation surfaces by the ...
К. Bissembayev +2 more
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Creation of vibro-protective devices on rolling contact bearings is widely spread in transportation technology and seismic protection. In this work, mathematical modeling of the oscillation movements of the elastic plate will be considered. The equations of motion for elastic plate on vibration supports bounded by high-order rotation surfaces by the ...
К. Bissembayev +2 more
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Synthesis of an active vibrational-protection system
Russian Engineering Research, 2014The synthesis of active vibrational-protection systems is considered for the example of a spring in longitudinal-transverse flexure whose static force-displacement characteristic corresponds approximately to a cubic parabola. The operational characteristics and parameters of a pneumatic damper introduced in a vibrational-protection system are ...
G. A. Kurilenko +2 more
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Frustration Protection of Exciton-Vibration Thermodynamics and Transfer
The Journal of Physical Chemistry LettersRecent work reported unusual effects in the time evolution of some cyclic exciton-vibration Hamiltonians, which stems from electronic frustration and the accompanying ground state degeneracy. Here we show that the thermodynamic and dynamical properties of electronically frustrated systems are insensitive to variations of temperature and exciton ...
Rapti Pal, Nancy Makri
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Adaptive Vibration Protection Systems for Pipelines
2021Vibration protection is required to preserve the integrity of pipeline systems and the homogeneity of the transported environment. The improving efficiency of mechanical energy dissipation needs an organization of feedback; it is possible through the workflow automation of vibration protection. Automation is technically difficult to implement.
K. V. Naigert, V. A. Tselischev
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Optimal systems of vibration protection
1999Various claims imposed on vibration protection systems can be expressed in terms of certain constraints. In what follows we list a few of the most important classes of constraints which need to be accounted for in the synthesis of vibration protection systems.
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Parametric Vibration Protection of Linear Systems
2016A mechanical system whose behavior is described by linear differential equations with constant coefficients is considered. The system is subjected to external excitation; this excitation can change in an arbitrary way over time. Absolute invariance implies absolute independence of some coordinates from the excitation applied to the system. The absolute
Igor A. Karnovsky, Evgeniy Lebed
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Vibration Protection in a Variable Speed Compressor
The Journal of the Acoustical Society of America, 2011Vibration protection in a compressor system with a variable speed compressor may include operating a variable speed compressor at a plurality of frequencies, measuring a plurality of vibration values associated with the plurality of frequencies, determining a frequency characteristic of the compressor system based on the plurality of vibration values ...
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VIBRATION PROTECTION OF SENSITIVE ELECTRONIC EQUIPMENT FROM HARSH HARMONIC VIBRATION
Journal of Sound and Vibration, 2000Vibration protection of sensitive electronic equipment which operates in harsh environments often relies on resilient mounts. The traditional optimal design of vibration isolation from harmonic vibration is based on compromising damping and stiffness properties of mounts and is aimed, in general, at widening the frequency range over which the ...
A.M. VEPRIK, V.I. BABITSKY
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