基于ANSYS的大风箱结构有限元设计分析  

FEM Analysis for Big Air Box Based on ANSYS

作　　者：侯庆伟[1] 祁金胜[1] 冯玉滨[1] 高永芬[1] 张乐川[1] 

机构地区：[1]山东电力工程咨询院有限公司,山东济南250013

出　　处：《锅炉技术》2010年第6期15-18,共4页Boiler Technology

摘　　要：针对目前大型火力发电厂烟风道截面大、壁板较薄,易发生局部失稳的问题,以国内某电厂600MW机组热二次风大风箱为例,运用ANSYS软件,对大风箱进行结构有限元分析。通过结构静力分析及屈曲研究,根据壁板与加固肋组合设置的结构变形和应力分布结果,以及风箱结构的临界屈曲载数据,为提高结构稳定性提出设计建议。The local buckling is a crucial point in the current projects of the steel flue gas and air duct for the unique characteristic of huge section with thin walls. In this paper, structure FEM researches by＇ANSYS are carried out on a domestic project the big air box of 600 MW generating sets. The static and eigen-buekling analysis are conducted on the air box with different wall thickness and type of reinforcement beams. Finally, some design suggestions are proposed for increasing structure stability according to structure displace and stress results and critical eigen-buckling load value.

关 键 词：有限元 静力分析 屈曲分析 结构设计 

分 类 号：TK223.28[动力工程及工程热物理—动力机械及工程]