船舶结构时变可靠性分析的一种非线性腐蚀模型

A nonlinear corrosion model of ship structure time-varying reliability analysis

疲劳与腐蚀是船舶结构的两大劲敌,两因素处于实时变化当中,因此考虑这两个因素的可靠性分析称为时变可靠性分析。在时变可靠性分析当中,可靠性模型的建立至关重要,不同的模型将会得到不同的计算分析结果。本文在对现有的模型进行分析的基础之上,提出了适用于船体结构时变可靠性分析的一种非线性腐蚀模型。该模型可以较好的模拟海洋结构物的腐蚀过程。

Fatigue and corrosion are two major rivals of ship structure, and two factors are in real-time change, so the reliability analysis of these two factors is called time-varying reliability analysis. In the analysis of time-varying reliability, the establishment of reliability model is very important, and different models will get different calculation results. Based on the analysis of the existing models, this paper presents a nonlinear corrosion model for reliability analysis of ship structures. The model can simulate the corrosion process of Marine structures better.