摘要
通过对裂纹顶端张开位移COD及其临界值δ_c的统计研究和理论分析,提出了断裂韧性的概率模型,给出了强度设计许用值(A,B值),为压力容器、化工设备的可靠性设计和评定提供了理论依据和统计数据。
Based on the statistic research and theoretical analysis of COD and δ_s probabilistic model about fracture toughness is presected. The theoretical basis and statistic data for the reliability design and assessment of chemical engineering equipment will be provided.
关键词
断裂韧性
概率模型
三参数WEIBULL分布
facture toughness
probabilistic model
three-parameter weibull distribution
