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qian ting nai ya ting ti zong jin jia qiang zhui zhu jie he ke jie gou xing wei de fen xi
Author(s): 
Pages: 
Year: Issue:  10
Journal: Journal of Ship Mechanics

Keyword:  锥—柱结合壳纵筋加强锥—柱结合壳力学行为有限元分析;
Abstract: 为考察“纵筋加强锥—柱结合壳”的力学行为,设计了“纵筋加强锥—柱结合壳”作为计算模型,运用有限元方法分析了该模型凸/凹结合部母线方向和圆周方向应力分布.纵筋在纵向和环向均破坏了结构的连续性,在环向还破坏了结构的轴对称性,在纵筋端部(纵向)和纵筋与纵筋之间(环向)的壳板上产生了应力突变和很多应力集中点;此外,在锥—柱结合部增加了许多纵向焊缝,锥—柱结合部应力环境十分恶劣.这种结构形式增大了艇体出现疲劳破坏的危险性.在采用高强度钢(屈强比接近1)的大潜深潜艇的锥—柱结合部不能采用“纵筋加强”结构形式.
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