摘要
提出片状疲劳裂纹扩展行为的定量描述方法,建立片状疲劳裂纹扩展的参数化模型,并基于参数化模型建立片状疲劳裂纹扩展的有限元模型.利用本文的模拟方法,对紧凑拉伸试样中片状疲劳裂纹的扩展过程进行模拟,裂纹扩展形貌参数的模拟数据与实验测量数据可以很好地吻合.
The quantitative description method of flaky fatigue crack propagation is proposed.Base on it,aparameterized model for flaky fatigue crack propagation is established.And then,a finite element model for flaky fatigue crack propagation is established base on the parameterized model.Using the developed numerical simulation method,the propagation process of flaky fatigue crack in compact tensile specimen is simulated.Simulation data of crack propagation morphology parameters and its experimental data are in good agreement.
出处
《兰州理工大学学报》
CAS
北大核心
2016年第2期162-166,共5页
Journal of Lanzhou University of Technology
基金
教育部"长江学者和创新团队发展计划"(IRT1140)
国家自然科学基金(51065014)
关键词
片状疲劳裂纹
数值模拟
紧凑拉伸试样
形貌参数
flaky fatigue crack
numerical simulation
compact tensile specimen
morphology parameter
