Initial cyclic hardening behavior of cracked structures under large-amplitude cyclic loading

Jin Ha Hwang, Yun Jae Kim, Jin Weon Kim, Sang Eon Kim

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

A new cyclic hardening model is proposed based on combined experimental and numerical analyses to simulate the deformation of a cracked structure under large amplitude cyclic loading. In the experiment conducted herein, compact tension specimen tests made of TP304 stainless steel were subjected to large-amplitude cyclic loading. Then, finite element (FE) analysis was performed using the ABAQUS debond option to develop a cyclic hardening model. In the proposed cyclic hardening law, isotropic hardening was calculated in the first loading cycle. To assess the unloading of the first cycle, a Chaboche combined hardening model was used. The model results agreed well with the experimental displacement data. The effects of hardening in the first loading cycle on the yield surface and equivalent plastic strains in the subsequent cycles are presented as well.

Original languageEnglish
Article number107911
JournalEngineering Fracture Mechanics
Volume254
DOIs
Publication statusPublished - 2021 Sept

Bibliographical note

Funding Information:
This work was supported by the Nuclear Power Core Technology Development Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), granted financial resource from the Ministry of Trade, Industry & Energy, Republic of Korea. (No. 20193110100020)

Publisher Copyright:
© 2021 Elsevier Ltd

Keywords

  • Cracked specimen
  • Cyclic hardening model
  • FE debond analysis
  • Large amplitude cyclic loading

ASJC Scopus subject areas

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering

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