基于极限载荷法的矩形接管结构设计及参数化分析  

Structural Design and Parametric Analyses for a Rectangular Nozzle Based on Limit Load Method

作　　者：古晋斌 宫建国[1] 惠虎[1] 

机构地区：[1]华东理工大学机械与动力工程学院,上海200237

出　　处：《压力容器》2017年第4期19-25,18,共8页Pressure Vessel Technology

基　　金：国家重点研发计划项目(2016YFC0801905)

摘　　要：采用极限载荷法对某旋风分离器矩形接管进行结构设计,并与弹性应力分析法设计的结果进行比较,同时,基于极限载荷法对矩形接管进行参数化分析。结果表明,与弹性应力分析法相比,极限载荷法设计可以显著降低矩形接管的壁厚;结构的极限载荷随着矩形接管折边过渡圆角的增大而增大,随着矩形接管长宽比的增加而减小;矩形接管短边与筒体轴线平行布置时,结构有更高的极限载荷;接管位置对结构的极限载荷影响较小。The structural design for the rectangular nozzle of a cyclone separator was conducted by using the limit load analysis method, and the results were compared with those obtained through the method of the elastic stress analysis method. Parametrical studies on factors affecting the limit load are conducted. The results indicate that compared with the elastic stress analysis method, the thickness of the rectangular nozzle can be significantly reduced by applying the limit load analysis method. The limit load of the struc- ture increases with the increase of the fillet radius, and decreases with the increase of the aspect ratio. A higher limit load is found when the short edge of the rectangular nozzle is parallel to the cylinder axis. In addition, locations of the nozzle have little effect on the limit load of the structure.

关 键 词：矩形接管 极限载荷分析 弹性应力分析 参数化分析 

分 类 号：TH49[机械工程—机械制造及自动化] O344.5[理学—固体力学]