轴向运动小垂度索动力响应
Dynamic Response of the Axially Moving Cable with Small Sag
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摘要: 基于轴向运动小垂度索三维动力模型与波传播概念,求得一般边界条件下索横向振动的精确解。在频 域中得到解的表达式,并对解进行了波传播解释。该解释在索振动波动控制中对控制器的设计起到重要作用。 数值仿真说明了索的垂度对其响应与波传播的影响。Abstract: Based on a mathematical model that describes the three-dimensional response of the axially moving cable with small sag and on the concept of wave propagation, an exact solution for the linear, in plane transverse vibration of the axially moving cable with general boundary conditions is obtained. The expression of the solution is derived in frequency domain and interpreted in terms of wave propagation functions. The physical interpretations of the vibrational response will play an important role in the design of active vibration wave controllers. The axially moving cable with fixed boundary conditions in two ends is used as an example to investigate the effect of equilibrium curvature on the dynamic responses and wave propagation.
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Key words:
- cable /
- transfer function /
- wave /
- Green function
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