Comparison of hot spot stress evaluation methods for welded structures

International Journal of Naval Architecture and Ocean Engineering

Myung-Soo Han¹  Jae-Myung Lee²  Myung-Hyun Kim²  Mahen Mahendran³  Sang-Beom Shin⁴  June-Soo Park⁵  Jung-Kwan Seo⁶ 

[1]Daewoo Shipbuilding and Marine Engineering, Geoje, Korea

[2]Department of Naval Architecture and Ocean Engineering, Pusan National University, Busan, Korea

[3]Faculty of Built Environment and Engineering, Queensland University of Technology, Brisbane, Australia

[4]Hyundai Heavy Industries, Ulsan, Korea

[5]Korea Power Engineering Company, Yongin, Korea

[6]The Lloyd's Register Educational Trust (LRET) Research Centre of Excellence, Pusan National University, Busan, Korea

关键词: Hot-spot stress;    Finite element method;    Structural stress;    Welded joint;    International Institute of Welding (IIW);   

DOI  :  10.2478/IJNAOE-2013-0037

来源: DOAJ

【 摘 要 】

In this paper, different evaluation methods of Hot Spot Stresses (HSS) have been applied to four different welded structure details in order to compare them and to illustrate their differences. The HSSs at failure-critical locations were calculated by means of a series of finite element analyses. There was good overall agreement between calculated and experimentally determined HSS on the critical locations. While different methods and procedures exist for the computation of the structural hot-spot stress at welded joints, the recommendations within the International Institute of Welding (IIW) guideline concerning the ‘Hot Spot Stress’ approach were found to give good reference stress approximations for fatigue-loaded welded joints. This paper recommends and suggests an appropriate finite element modeling and hot spot stress evaluation technique based on round-robin stress analyses and experimental results of several welded structure details.

【 授权许可】

Unknown