流体诱发的结构绕振分析

Analysis of Structural Circle-vibration Induced by Fluid

在工程中相距较近的结构很多,如热交换器中的管排,相距很近的高层高耸结构等。研究了在相距较近结构影响下的结构流体诱发振动,分析了作用在结构上的各种类型的流体力,建立其运动微分方程式并分析求解,讨论了连续体的弯曲型振动可能出现的绕振。所建立的运动微分方程式具有一定的理论应用价值,利用该方程求得模态坐标和流体诱发振动的响应值的方法具有一定的参考价值。

Many of the structures were in close proximity in the projects, such as heat exchanger tubes in the row and high-rise structures of close proximity. The structural fluid influenced by the near structures having induced vibration was studied. All kinds of fluid forces processing on the structure were also analyzed, with their kinetic differential equations built and solved as well. Again, the circle-vibration that can be seen in the crooked vibration of continuity was discussed. The kinetic differential equation built herein was of certain value in theory. This equation if used to find modal coordinates and fluid-induced vibration response, was of some reference value.