电子科技大学学报2020，Vol.49Issue(1)：13-21,9.DOI:10.12178/1001-0548.2020016
薄板件自然疲劳裂纹扩展SBFEM仿真方法
Simulation of Natural Fatigue Crack Propagation in Thin-walled Structures Using SBFEM
摘要
Abstract
Natural fatigue crack growth (NFCG) has been investigated extensively for decades due to its significant influence on the overall life of key components and the complex mechanism involved.In this study,a NFCG model based on the phenomenological observations of fatigue crack growth is first invoked,and a computational strategy is developed in the scaled boundary finite element method (SBFEM) context to simulate the NFCG phenomenon and to predict the fatigue life of specimen with different thicknesses under various cyclic loading conditions.The effects ascribed to the loading conditions,specimen thickness and material properties on the NFCG can be investigated in detail with the our elaborated strategy,which provides a helpful tool for practical specimen design,material selection and eddy current testing.关键词
试验测试/加载作用/自然裂纹扩展/数值模拟/比例边界有限元Key words
experimental test/loading effect/natural fatigue crack growth/numerical simulation/scaled boundary finite element method分类
通用工业技术引用本文复制引用
李翰超,杜平安,杨丹,于亚婷,刘建涛..薄板件自然疲劳裂纹扩展SBFEM仿真方法[J].电子科技大学学报,2020,49(1):13-21,9.基金项目
National Key R&D Program of China (2017YFB0703200) （2017YFB0703200）
National Natural Science Foundation of China (51972268,51305362,51775459)国家重大研发计划(2017YFB0703200) （51972268,51305362,51775459）
国家自然科学基金(51972268,51305362,51775459)This work was funded by the Young Scientific Innovation Team of Science and Technology of Sichuan (2017TD0017). （51972268,51305362,51775459）
