平盖中心开单个孔补强计算的讨论

DISCUSSION ON REINFORCEMENT CALCULATION FOR OPENING A HOLE IN THE CENTER OF FLAT HEAD

文章选用平盖与筒体直接焊接的结构形式,利用ANSYS有限元软件对平盖中心开孔（开孔率为0.1~0.9）进行了应力分析,考察各平盖开孔的应力情况,并采用反向法兰法对开孔率大于0.5的各个平盖开孔模型进行计算。通过比较两种方法计算的结果,得出反向法兰法和有限元分析所计算的应力变化规律是一致的,从而印证了反向法兰法的可靠性,并进一步分析了平板大开孔的补强特点。

This paper uses finite element software ANSYS to perform stress analysis of the opening in the center of flat head(opening rate is 0.1~0.9),and uses reverse flange method to calculate each flat head opening model with an opening rate of more than 0.5.The comparison of the calculation results shows that the stress change rule calculated with reverse flange method and finite element analysis method is consistent,thus proving the realiability of reverse flange method.The reinforcing characteristics of plate with large openings are further analyzed.