By using Kane’s equations, proves the theorem of moments with respect to instantaneouseentre of zero velocity and acceleration in the plane motion of a rigid body.
From the path of instant center of velocity in plane motion of rigid body, it has been proved that the instant centers of both velocity and acceleration are coincident at the initial instant starting to move. Under this condition, this is handier to operate than the method of the composition of acceleration to solve dynamical problems.
From the path of instant center of velocity in plane motion of rigid body, it has been proved that the instant centers of both velocity and acceleration are coincident at the initial instant starting to move. Under this condition, this is handier to operate than the method of the composition of acceleration to solve dynamical problems.
In the light of elastic contact theory and the theory of dynamics of partical system, the peak value of the acceleration of collision impact is studied from a theoretical point of view before the formule of caculation of amax is presented.
Although the shock spectrum analysis is a useful method of frequency domain analysis to study the shock motion,the zero drift phenomenon of shock acceleration measurement influences the accuracy of shock spectrum data.
The experimental results show that the shock acceleration of the vessel shell can reach as high as 7.75×10 4g and the vibration acceleration quickly decline to as low as 57g with the attenuation due to the vessel stand and its pillars while the ground vertical vibration measured near the laboratory wall is just 0.43g,which means the blast seismic intensity of the laboratory is not more than grade Ⅱ.
Based on the piezoresistive effect of the MOS RO, the accelerometer transduces the acceleration into frequency output.
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As the accelerometer is based on the piezoresistive effect of the MOS RO, the frequency characteristics of the MOS RO and its relationship with the acceleration are described.
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Enhancement of wave and acceleration of electron in plasma in the external field
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This paper investigates the enhancement of Langmuir and ion-acoustic wave and the acceleration of the electron in collisionless plasma, in the presence of an external transverse field.
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Furthermore, the formula for ponderomotive force and the expression that describes the electron acceleration were obtained.
The purpose of this article is to clarify the various characteristic frequencies of a linear single degree of freedom mass spring system with viaoous damping. The frequencies are: undamped frequency ω0 ( resonant frequency, phase resonant frequency, velocity amplitude resonant frequency ) , natural frequency ωn, ( displacement ) amplitude resonant frequency Ωad and acceleration amplitude resonant frequency Ωaa.When the viscous damping is small, the differences among those frequencies are of no importa...
New methods of transonic experiment in the ballistic range are presented in this paper. Two special launching techniques are used on a two-stage light gas gun, namely the filling gas techniques which can be used to obtain a projectile velocity in the subsonic range and the low filling condition technique which can be Used to reach transonic and supersonic ranges. Since initial acceleration of model is lower in the subsonie and transonic cases, models can be launched with stable attitude and undamaged ...
The absolute transmissibility measurements in high frequency region are given in (his paper for vibration isolation systems consisting of several thicknesses of glass-fibre material and loadings.The measurements show that if the acceleration inputs are equal at different frequencies,such material-loading system has higher transmissibilities than that of a simple system in high frequecy region.It is discovered that the system possessing linear spring with stiffness varying proportionally with the squar...