Research on the performance of flat-hat stiffeners as longitudinal intermediate stiffener .

帽形中间加劲肋的加劲性能研究。

In the end , the design formula of stiffener is put forward which can supply reference to engineering .

最后提出了加劲肋设计公式，供工程参考。

The relatively small reduction in stressintensity magnification factor with inereasing stiffness of the stiffener .

随着加强肋刚度的增加，应力强度放大因子则相应有所减。