Ratcheting behavior of pressurized Z2CND18.12N stainless steel pipe under different control modes

Abstract

With a quasi-three point bending apparatus, ratcheting deformation is studied experimentally on a pressurized austenitic stainless steel Z2CND18.12N pipe under bending load and vertical displacement control, respectively. The characteristic of ratcheting behavior of straight pipe under both control methods is achieved and compared. The cyclic bending loading and internal pressure influence ratcheting behavior of pressurized straight pipe significantly under loading control and the ratcheting characteristics are also highly associated with the cyclic displacement and internal pressure under displacement control. They all affect not only the saturation of the ratcheting strain but the ratcheting strain rate. In addition, ratcheting simulation is performed by elastic-plastic finite element analysis with ANSYS in which the bilinear model, Chaboche model, Ohno-Wang model and modified Ohno-Wang model are applied. By comparison with the experimental data, it is found that the CJK model gives reasonable simulation. Ratcheting boundaries under two control modes are almost same.

Experimental study on the whole‐life heterogeneous ratchetting and ratchetting‐fatigue interaction of SUS301L stainless steel butt‐welded joint

“…For the materials and structural members experiencing an asymmetric stress-controlled cyclic loading, the responded plastic strain will accumulate during the cycling deformation, ie, the ratchetting may occur, if the applied stress is higher than the yielding strength of the materials. In the last decades, as reviewed by Kang, 19 the experimental, theoretical, and numerical researches about the uniaxial/multiaxial ratchetting were extensively conducted and well documented [20][21][22][23][24][25][26][27][28] for various materials and components. Furthermore, the ratchetting-fatigue interaction, mainly addressing the detrimental influence of ratchetting strain on the fatigue life, was investigated experimentally and theoretically by Rider et al, 29 Yang et al, 30 Kang et al, [31][32][33][34][35] Wu et al, 36 Yuan et al, 37 Sreenivasan et al, 38 Wang et al, 39 and so on.…”

Ratcheting Simulation of a Steel Pipe with Assembly Parts under Internal Pressure and a Cyclic Bending Load

“…In recent years, many researchers have studied the ratcheting behavior of pipes by experimental and numerical simulation. Chen et al [12][13][14] studied the ratcheting behavior of elbow and straight pipes under internal pressure and cyclic loading by experimental and numerical simulation. In their study, several cyclic plasticity models were considered in the ratcheting simulation, including bilinear (BKH) [15], multilinear (MKIN/KINH) [16,17], Chaboche (CH3) [18,19], modified Chaboche (CH4) [20], Ohno-Wang [21,22], modified Ohno-Wang [23][24][25][26], and Abdel Karim-Ohno [27].…”

Ratcheting behavior of pressurized corroded straight pipe subjected to cyclic bending

“…Thus, it was essential to critically evaluate the widely used and recently developed constitutive models against their simulation capability of component responses for determining the state-of-the-art constitutive modeling features and future model development needs. Ratcheting strains of pressurized piping components such as elbow pipe and straight pipe with or without local wall thinning under cyclic loading, have been also studied by experiments and finite element analysis after 2013 [20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36].…”