| 海洋平台用A633钢焊接接头的概率断裂韧性 |
| |
| 引用本文： | 陈国明,许发彦.海洋平台用A633钢焊接接头的概率断裂韧性[J].石油机械,1999,27(12):17-20. |
| |
| 作者姓名： | 陈国明 许发彦 |
| |
| 作者单位： | 1. 石油大学·华东
2. 中国船级社 |
| |
| 基金项目： | 中国海洋石油总公司资助，国家自然科学基金!资助项目 (597790 0 1 ) |
| |
| 摘 要： | 测定了海洋平台导管架用A633钢焊接接头在26℃、0℃、-20℃、-40℃和-50℃等5种温度下裂纹尖端张开位移(CTOD)临界值δC的统计特征参数。应用统计方法证实不同温度下CTOD临界值可应用Weibull分布或正态分布等来描述,并估计了相应的分布参数,由此可建立A633钢焊接接头P-T-δC曲线。这种曲线既反映CTOD临界值随温度的变化规律,同时又能描述CTOD值本身所具有的概率分散性。通过试验研究获得的基础数据可应用于海洋平台断裂安全性评估和缺陷容限分析。
|
| 关 键 词： | 断裂韧性 焊接接头 海上平台 统计分析 断裂试验 |
Statistical properties of fracture toughness of offshore steel A633 welded joint |
| |
| Chen Guoming,Xu Fayan.Statistical properties of fracture toughness of offshore steel A633 welded joint[J].China Petroleum Machinery,1999,27(12):17-20. |
| |
| Authors: | Chen Guoming Xu Fayan |
| |
| Abstract: | This article conducts an experimental investigation into the probabilistic properties of fracture toughness of offshore steel (ASTM A633) welded joint at five different temperatures. The statistical result of experiment data shows that the critical CTOD value δ C of A633 steel welded joint at different temperatures can be described by Weibull distribution or normal distribution. Based on the estimated distribution parameters at various temperature, the P-T-δ C curve is established, which can be applied to describe the relationship between three parameters: CTOD, temperature and probability. These estimated statistical parameters may be used in fracture reliability analysis and flaw assessment of offshore structures. |
| |
| Keywords: | fracture toughness welded joint offshore platform statistical analysis fracture test |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
