Safety analysis for nozzles of coldstreched austenitic stainless steel pressure vessels

摘要：

Manholes and nozzles may be needed in the coldstreched austenitic stainless steel pressure vessels as the actual requirements. But how to definitely select the allowable stress of nozzles hasnt been mentioned in related standards like the ASME Code Case 2596. Nonlinear finite element method was used to analyse three nozzle models designed according to different allowable stress, also the stress and strain at this district were compared. The results indicated that nozzle structure with thinner wall thickness was lack of sufficient security due to stress concentration, so focused monitoring should be adopted during coldstretching process.

关键词： Coldstrecthing Nozzles Nonlinear finite element method.

作者: Yunfei Zhang Hu Hui Peining Li

作者单位: Key Laboratory of Pressure Systems and Safety, Ministry of Education, East China University of Science and Technology, Shanghai 200237, China

会议类型: 国际会议

会议名称: 2012 International Symposium on Structural Integrity 2012国际结构完整性学术研讨会 ISSI 2012

会议地点: 济南

会议语种:英文

页码: 205-211

在线出版日期: 2012-10-31（万方平台首次上网日期，不代表论文的发表时间）