散货船底部纵骨防倾肘板节点疲劳优化研究

摘要

A serial of connection details are researched for rising fatigue life of bottom longitudinal connection at tripping brackets under CSR ( BC) rule.The comparing of the stress concentration factors between them is applied by FEM analysis . Some of cutting details are proved to be very effective for rising fatigue life .The corresponding geometric stress concentration fac-tors are provided for these cuttings based on CSR ( BC) fatigue simplified calculation method .%为了提高CSR（ BC）规范下散货船底部纵骨在防倾肘板连接处的疲劳寿命，采用有限元法比较几种不同切口形式在热点处的应力集中系数，确定其中有效的几种形式，使用共同规范的直接计算法予以证明，为便于使用，针对这些切口形式给出在CSR（ BC）简化计算法中可以参照使用的系数。