FEA INVESTIGATIONS INTO THE EFFECTS OF GEOMETRY AND TENSILE PROPERTIES ON J AND CTOD IN STANDARD FRACTURE SPECIMENS

摘要：

Current standard CTOD/J testing procedures (e.g. BS 7448) specify the use of deeply notched specimens loaded in tension or bending. The load versus displacement curve obtained from the specimen is used to estimate J or CTOD. The validity of the equations given in the standards is questioned when they are used for welds, where there is strength inhomogeneity, and there are variations in specimen geometry. Using 2D and 3D FEA, this work assessed the effects due to crack straightness, specimen geometry and weld to base metal strength mismatch on J & CTOD and how these differ from standard formulations.

作者: Liwu Wei Henryk G Pisarski

作者单位: TWI Ltd, Granta Park, Great Abington, Cambridge, CB21 6AL, UK

会议类型: 国际会议

会议名称: 第九届工程结构完整性国际会议(The Ninth International Conference on Engineering Structural Integrity Assessment)

会议地点: 北京

会议语种:英文

在线出版日期: 2007-10-15（万方平台首次上网日期，不代表论文的发表时间）