船体结构腐蚀疲劳问题以及数值计算方法(英文)  

Corrosion Fatigue Problem in Ship Structure and Its Calculation Approaches

作　　者：唐志波[1] 谢永和[1] 

机构地区：[1]浙江海洋学院船舶与建筑工程学院,浙江舟山316004

出　　处：《船舶力学》2008年第3期418-428,共11页Journal of Ship Mechanics

基　　金：Scientific Research Foundation for Returned Scholars from Ministy of Personnel of China (2006), and Ministry of Education of China (2007)

摘　　要：船体或者内部高强脆性材料在腐蚀环境中的破坏问题已受广泛关注,其中涉及破坏机理的研究屡见报道,但相关的数值计算研究方法目前还屈指可数,文章在介绍各种破坏机理的基础上,从数值计算方法研究的角度阐述了最近几十年中的研究进展以及作者在该领域所取得的前沿性的成果,并指出了无网格有限元计算方法将在这个研究领域扮演重要角色。High strength materials on ship body are notable for their rigidity and resistance to a hostile environment. Nevertheless, if a stressed component is exposed to chemical attack, it may suffer from a form of delayed fracture known as static fatigue. From the point of view of a designer, it is clearly desirable to determine the behavior of sub-critical crack growth; the crack path and crack growth rate, as a function of material properties and loading conditions are of particular interest. This paper presents advances in stress assisted corrosion problem in history and its corresponding numerical approaches in last decades, and finally, comes up with consideration and crucial suggestions for future work.

关 键 词：应力腐蚀 有限元 断裂 疲劳 无网格计算 

分 类 号：U661.5[交通运输工程—船舶及航道工程]