SENSITIVITY ANALYSES OF FINITE ELEMENT METHOD FOR COMPUTING RESIDUAL STRESS OF DISSIMILAR METAL MULTI-PASS WELD

摘要：

Recently the stress corrosion cracking cases of dissimilar metal welds are found in many nuclear power plants. Weldinduced residual stress is main factor for crack growth. Therefore exact estimation of residual stress is important for reliable operation. This paper presents residual stress computation performed by EU mock-up Nozzle. Based on ANSYS software, uncoupled thermal-mechanical threedimensional (3D) and two-dimensional ax symmetric finite element models are developed. Based on 2 dimensional and 3 dimensional finite element analyses, effect of the welding sequence approaches for multi-pass weld such as lump, layer and ring etc. On residual stress variation is estimated for sensitivity analysis.

作者: YaoLong, Tsai ChaoJen, Li TaiPing, Tsai Li-Hua, Wang TeWei, Fan ChangPin, Chou

作者单位: National Chiao Tung University HsinChu, R.O.C Industrial Technology Research Institute HsinChu, R.O.C

会议类型: 国际会议

会议名称: 18th International Conference on Nuclear Engineering(第18届国际核能工程大会 ICONE 18)

会议地点: 西安

会议语种:英文

页码: 1-9

在线出版日期: 2010-05-17（万方平台首次上网日期，不代表论文的发表时间）