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首页> 外文会议>ASME(American Society of Mechanical Engineers) Pressure Vessels and Piping Conference vol.8: Seismic Engineering; 20050717-21; Denver,CO(US) >GOVERNING EQUATIONS OF MOTION OF WALKING BEHAVIOR OF UNANCHORED FLAT- BOTTOM CYLINDRICAL SHELL TANKS DURING FREE ROCKING MOTION
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GOVERNING EQUATIONS OF MOTION OF WALKING BEHAVIOR OF UNANCHORED FLAT- BOTTOM CYLINDRICAL SHELL TANKS DURING FREE ROCKING MOTION

机译：自由摇摆运动过程中无锚扁底圆柱壳坦克行走行为的运动方程

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摘要

The governing equations of motion of the walking phenomena of the unanchored flat-bottom cylindrical shell tanks are examined. This paper considers that the walking phenomena is followed by the rocking motion of the tanks, since the rocking motion induces the reduction of self-weight and consequently reduces friction force between the tank and the foundation. The equations of motion are derived through variational approach. The physical quantities related to the walking phenomena are the mass of tank itself, tank content, the effective mass of liquid for bulging motion, for rocking motion and for rocking-bulging interaction motion, and friction force including self-weight reduction effects. The roles of every physical quantity related to the walking motion are clearly identified. The time history of the walking motion of the model tank induced by the initial enforced uplift angle and then gently released is well computed by the proposed procedure.
机译：研究了无锚固平底圆柱壳罐行走现象的运动控制方程。本文认为，行走现象伴随着水箱的摇摆运动，因为摇摆运动会引起自重的减小，从而减小水箱与基础之间的摩擦力。运动方程是通过变分方法得出的。与行走现象有关的物理量包括：储罐本身的质量，储罐内含物，用于鼓胀运动，用于摇摆运动和用于用于摇摆-鼓胀相互作用运动的液体的有效质量，以及包括自重减轻作用的摩擦力。清楚地确定了与步行运动有关的每个物理量的作用。拟议的程序可以很好地计算出模型罐的行走运动的时间历史，该过程由初始强制的抬升角引起，然后缓慢释放。

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