Investigation on the Bending Ratcheting Behavior of Pressurized Z2CND18.12N Stainless Steel Elbows

Abstract:

A series of ratcheting experiments and finite element analysis simulation under bending loading for Z2CND18.12N stainless steel elbows were carried out. Chaboche and modified Ohno-Wang model are applied to evaluate structural ratcheting response simulations. It is found that ratcheting strain initiates firstly in the hoop direction and increases in the axial direction with the increasing of loading. The Ratcheting strain rate grows with the increase of the reversed in-plane bending load or internal pressure for both specimens with different loadings. Comparison of simulation and experiment showed that modified Ohno-Wang model presented simulation more reasonably.

• Periodical: Key Engineering Materials (Volume 573)
• Pages: 69-75
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.573.69
• Online since: September 2013
• Authors: Xiao Hui Chen, Duo Min Li, Jian Bei Zhu, Xu Chen
• Keywords: Cyclic Plasticity Models, Pressurized Elbow, Ratcheting Strain, Reversed In-Plane Bending

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