应力腐蚀裂纹尖端力学特征分析-机械设计及理论专业论文.docx

目 录1 绪 论 .......................................................................................................................................11.1 课题研究背景及意义 ...................................................................................................11.2 国内外研究现状 ...........................................................................................................11.2.1 应力腐蚀裂纹研究现状 .....................................................................................11.2.2 核电高温水环境下应力腐蚀开裂研究现状 .....................................................21.2.3 扩展裂纹研究现状 .............................................................................................31.2.4 多尺度方法研究现状 .........................................................................................31.3 课题研究内容、方法及技术路线 ...............................................................................41.3.1 研究内容 .............................................................................................................41.3.2 研究方法 .............................................................................................................61.3.3 技术路线 .............................................................................................................72 应力腐蚀裂纹动态扩展模型的建立 .....................................................................................82.1 试样的确定 ...................................................................................................................82.2 宏观模型 .......................................................................................................................92.2.1 模型加载方式 .....................................................................................................92.2.2 材料模型 ...........................................................................................................102.2.3 模型假设及有限元模型 ................................................................................... 112.3 微观尺度应力腐蚀裂纹扩展模型 ..............................................