桥梁风致颤振分析以及在ANSYS中的实现

Wind-induced flutter analysis of long-span bridge based on second development of ANSYS

首先简要介绍了桥梁风致颤振分析的多模态参与单参数搜索M S法的基本理论以及ANSYS二次开发的几种方法 ,然后以VisualFortran为二次开发平台 ,运用M S法编写了在ANSYS中实现大跨度桥梁风致颤振分析的计算程序和相应的界面菜单程序 .最后通过算例展示了在ANSYS中进行颤振分析的整个过程 ,其计算结果与大跨度桥梁空间静、动力分析程序NACS和风洞试验数据基本一致 。

ANSYS in used widely in bridge engineering with opened second development system.The Multi mode Participating and Single Parameter searching method(M S method)is introduced briefly at first, and then the according program, which is used to implement wind induced flutter analysis of long span bridge using visual fortran based on M S method in ANSYS, is developed by the authors of the paper.The example of Humen Suspension Bridge illusrates the whole procedure of wind induced flutter analysis in ANSYS ,the result shows accordingly with result of wind tunnel test and the program NACS developed by authors.