基于平盖改进后的两种加筋封头的强度分析及比较  

Strength analysis and comparison about two improved rib-heads which based on plat-head

作　　者：谭志洪[1] 谢志刚[1] 邓懿波[1] 朱启琨[1] 卢黎明[1] 

机构地区：[1]南昌大学环境科学与工程学院,南昌330000

出　　处：《机械设计与制造》2006年第7期29-31,共3页Machinery Design & Manufacture

摘　　要：首先对某加热器的平盖封头进行理论计算与分析,然后对其采用的两种封头改进形式(平盖加筋与球冠加筋)分别进行有限元分析,并根据求解结果进行分析比较,指出采用平盖加筋封头可以节省材料,为改善其局部应力集中现象和进一步提高使用寿命,可以采用大曲率半径球冠加筋的方法加以解决,对加筋封头的结构设计具有指导作用。Presents the analysis and theory about plat head for a heater firstly. And a finite element analysis of two improved head models （ plat rib - head and spherical rib - head） which bases on plat head that is given above. By comparing the results, points out that using plat rib- head may save large material. Spherical shell with big curvature radiua which is strengthened by ribs is used to improve the stress distribution and increase the life - span of the plat rib - head, . The method gives a direction for the structural design of rib- head.

关 键 词：球冠 平盖 加筋封头 应力 

分 类 号：O241.82[理学—计算数学]