摘要
考虑到船舶结构的型材面积、板厚、构件位置和材料弹性模量中不确定因素的影响,介绍了船体梁剖面要素变异性计算。计算采用随机函数线性化方法,对此直接运用导数的数学概念推导剖面要素的偏导数,而不是用解析式表达剖面要素。最后给出一个油船中剖面计算实例,并研究不确定因素对中剖面要素变异性的影响.
The paper presents estimation of geometrical characteristics of the hull girder sections,accounting for uncertainties in plate thickness,longitudinal section area,position of members and elastic modulus of material.The method presented is based on linearization of random function,for which partial deri- vatives of the geometrical characteristics are developed by using mathematical concepts of derivatives,instead of expressing the geometrical characteristics as analytical functions.Numerical results for midship section of a tanker are given and effect of the uncertainties on variability of the geometrical chara- cteristies of the section is investigated.
出处
《大连理工大学学报》
EI
CAS
CSCD
北大核心
1989年第1期91-98,共8页
Journal of Dalian University of Technology
关键词
船体
变异性
剖面要素
油船
梁
hull strength
structural reliability
numerical differentiation
