潜艇横向刚性构架区域应力计算解析方法

本文对框架肋骨及平面舱壁船体结点区域的应力进行理论求解,考虑了内、外框架肋骨和结点区域嵌入厚板,以及厚、薄板连接处由于中曲面不一致引起的附加力矩和邻近普通肋骨对框架肋骨及平面舱壁纵向弯曲的影响.应用本文的计算方法、现行计算方法和有限元方法进行实际结构结点应力的比较计算,结果表明本文的计算方法比现行的计算方法更合理、更全面.

An analytical method for stresses of the connection of submarine pressure hull and transverse rigid frame

This paper developed an analytical method for the stresses of the connection of submarine pressure hull and frame stiffener and/or transverse bulkhead considering the influence of the outer/inner frame stiffener and embedded thicker plate.The effects of additional bending moment are accounted for in the present method due to the adjacent ring-stiffener of pressure hull and the mismatch of mid-section between the thick and thin plates.The comparative studies are performed between the present method,existing analytical method and finite element method.The numerical results show that the present method is more rational and comprehensive comparing to the existing analytical method.