Evaluation of Deformation and Strength of Wall Thinne Pipes by Finite Element Analysis

J. Ocean Eng. Technol. 2005;19(5):65-70.

NAM KI-WOO;AHN SEOK-HWAN;LEE SOO-SIG;KIM JIN-WOOK;YOON JA-MUN;

Division of Materials Science and Engineering, Pukyong National University;School of Mechanical Engineering, Pukyong National University;Graduate School of Materials Science and Engineering, Pukyong National University;Korea Institute of Machinery & Mater

감육배관의 유한요소해석에 의한 변형 및 강도 평가

남기우;안석환;이수식;김진욱;윤자문;

부경대학교 신소재공학부;부경대학교 기계공학부;부경대학교 대학원 재료공학과;한국기계연구원;부경대학교 대학원 재료공학과;

Keywords: Wall Thinned Pipe, Finite Element Analysis, Bending Load, Fracture Behavior, Failure Mode

핵심용어: 감육배관, 유한요소해석, 굽힘하중, 파괴거동, 손상모드

Abstract

Fracture behavior and pipe strength are very important to the integrity of energy plants, ocean structures, and so forth. The pipes of energy plants and ocean structures are subject to local wall thinning, resulting from severe erosion-corrosion damage. Recently, the effects of local wall thinning on fracture strength and fracture behavior of piping systems have been the focus of many studies. In this paper, the elasto-plastic analysis is performed by FE code ANSYS on straight pipes with wall thinning. We evaluated the failure mode, fracture strength and fracture behavior, using FE analysis. Also, the effect of the axial strain on deformations and failure modes was estimated by FE analysis.