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Dynamic response of a high-rise chemical tower controlled by pseudo-elastic shape memory alloy cables

机译:拟弹性形状记忆合金电缆控制的高层化学塔的动力响应

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摘要

The wind-induced vibration of a high-rise chemical tower controlled by pseudo-elastic shape memory alloy cables was studied in this work. Based on taking into account phase transformations of shape memory alloy, the motion equation of the shape memory alloy-controlled chemical tower was established by the finite element method, which was coupled with phase transformation equations of shape memory alloy. The incremental finite-element-based Newmark integration method and the iterative method were utilized to solve this motion equation, and the dynamic response of the shape memory alloy-controlled chemical tower was analyzed. The results were compared with those of the chemical tower without any cables and under the control of common cables. It is found that pseudo-elastic shape memory alloy cables have good vibration suppression effect on the chemical tower. In addition, the vibration suppression effect of shape memory alloy cables is affected by the operating temperature, initial pre-strain of shape memory alloy, cross-sectional size of shape memory alloy, and the angle between each shape memory alloy cable and the ground.
机译:这项工作研究了由拟弹性形状记忆合金电缆控制的高层化学塔的风致振动。在考虑形状记忆合金相变的基础上,通过有限元方法建立了形状记忆合金控制化学塔的运动方程,并与形状记忆合金的相变方程耦合。利用基于增量有限元的Newmark积分法和迭代法求解该运动方程,分析了形状记忆合金控制化学塔的动力响应。将结果与没有任何电缆并在普通电缆控制下的化学塔的结果进行了比较。发现伪弹性形状记忆合金电缆对化学塔具有良好的减振效果。另外,形状记忆合金电缆的减振效果还受工作温度,形状记忆合金的初始预应变,形状记忆合金的横截面尺寸以及各形状记忆合金电缆与地面之间的角度的影响。

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