Ratcheting boundary Analysis of Straight and Elbow Piping
The ratcheting strains of the straight and elbow piping under two kinds of loads-pressurized piping under symmetric cyclic bending and pulsating cyclic pressure were analyzed based on Chaboche constitutive model. The locations of the maximum ratcheting strain were determined. The ratcheting boundaries of the two piping structures under two kinds of loads were compared and calculated by the C-TDF method. For the pressurized piping under symmetric cyclic bending, the allowable bending load increases from E90S to E90L under the same pressure. In the higher cyclic pressure range, the allowable pressure have little difference under the same bending load which indicates that the bend moment have a bit effects on the ratcheting boundary in the higher cyclic pressure range.
Ratcheting effect, Finite element analysis, Piping Elbow piping, Ratcheting boundary
Ting Liang Gang Chen Qi Zhang Xu Chen
School of Chemical Engineering & Technology, Tianjin University, 300072, China
国际会议
沈阳
英文
131-135
2010-07-28（万方平台首次上网日期，不代表论文的发表时间）