满足稳定性的船舶板架结构的可靠性分析  

Reliability Analysis of Ship Grillage Structure under Satisfying Stability

作　　者：安伟光 朱卫兵[1] 蔡荫林 洪国钧[2] 

机构地区：[1]哈尔滨工程大学 [2]中国舰船研究院

出　　处：《船舶工程》2002年第5期22-26,共5页Ship Engineering

摘　　要：以Ⅰ型截面为例 ,考虑屈服应力和外载荷为随机变量 ,并满足稳定性条件下 ,对板架结构进行可靠性分析。采用随机有限元法求解非线性安全余量可靠性指标及失效模式间的相关系数 ,为满足稳定性的板架结构的可靠性分析提供一个合理方法。最后 ,通过板架结构的可靠性算例 。In the paper, the ship grillage structure with I shaped cross section is taken as an example, yield stress and loads are assumed as random variables and stable conditions are considered satisfied, reliability analysis of ship grillage structure is carried out. Correlation coefficient between reliability indexes of nonlinear safety margins and failure modes is solved by use of stochastic finite element method. There by,a reasonable method is presented for reliability analysis of the ship grillage structure satisfying stable conditions. A calculation example of ship grillage structure is given and it shows the validity of the reliability analysis.

关 键 词：板架结构 稳定性 可靠性分析 船舶 

分 类 号：U661.4[交通运输工程—船舶及航道工程]