矩形常压容器壁板高宽比对应力分布及壁板加强的影响

对不同高宽比的矩形常压容器壁板进行有限元应力计算，结果表明，随着高宽比不断增大，最高应力区由壁板底部向两侧转移，顶部应力逐渐变小且成为壁板最低应力区域。壁板中间马鞍形的较高应力区随高宽比的增大逐渐延伸至底部和两侧。壁板高宽比增大时，由于较高应力区下移，因此可减少壁板中上端的加强筋板布置。

Effects of Height to Width Aspect Ratio of Rectangular Atmospheric Vessel Wall Plate on Stress Distribution and Strengthen

Through finite element calculation to the different height to width aspect ratio of rec tangular atmospheric vessel wall plate, the results showed that the highest stress area transfers from the bottom to both sides of wall plate and the stress of the wall plate top became smaller and became the lowest stress area with the height to width aspect ratio increasing. The saddle area of higher stress gradually extended to the bottom and sides of wall plate with the height to width as pect ratio increasing. Because higher stress area moves down on wall plate with the height to width aspect ratio increasing, reinforcing ribs of the wall plate upper middle can be reduced.