This paper establishes the vibratory motion equation of two kinds of core-tube suspension structure, derives rigidity matrix ;
本文针对两类核筒悬挂结构建立了振动方程，推导了刚度矩阵；
Damping: in physics, the restraint of vibratory motion, such as mechanical oscillations, noise, and alternating electric currents, by dissipating energy.
阻尼：物理学中，指因能量耗散使振荡、噪音、交流电之类的振动所受到的遏制。
The relationship between the volumetric deformations of sand for different number of cycles of vibratory motion and input accelerations and its dependence on input frequency are investigated.
文中还分析了不同振次下的干砂体积变形与振动加速度之间关系，以及振动频率对这关系的影响。
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