A nonlinear incremental damage model for fatigue-creep fracture

摘要：

Based on the ductility exhaustion model for fatigue- creep life prediction under high temperature condition, a nonlinear stress-controlled incremental damage evolution equation is presented in this paper. 1.25Cr0.5Mo steel fatigue-creep life can be evaluated safely and accurately at 540℃ and 520℃ with the equation. Meanwhile, a new expression to reflect the exponential relation of damage accumulation and current damage is proposed, and each variable of the expression possesses definite physical meaning.

关键词： Fatigue Creep Ductility exhaustion Damage Incremental

作者: Jie Dong Xuedong Chen Huifeng Jiang Zhichao Fan Shouxiang Lu

作者单位: Hefei General Machinery Research Institute, National Technology Research Center On Pressure Vessel a Hefei General Machinery Research Institute, National Technology Research Center On Pressure Vessel a Department of Safety Science and Engineering, University of Science and Technology of China, Hefei 2

会议类型: 国际会议

会议名称: 国际断裂力学2007年会(Fracture Mechanics and Applications 2007)

会议地点: 长沙

会议语种:英文

页码: 93-96

在线出版日期: 2007-11-01（万方平台首次上网日期，不代表论文的发表时间）