Effect of Corrosion-Fatigue Coupled Damage on Mechanical Properties of Q345 Angle Steel

DOI

10.2991/mmsa-18.2018.32How to use a DOI?

Keywords

corrosion fatigue; Q345 Angle Steel; coupling factor; coupled damage model

Abstract

Atmospheric environmental corrosion and wind-induced fatigue achieve a long-term synergistic effect, mutual coupling and promotion with each other. Under this circumstance, the speed of structural performance degradation accelerates and the ability of the structure to resist accidental loading decreases. In this paper, an evolutionary model for evaluating fatigue damage is established based on the characteristics of energy dissipation and fatigue crack propagation. Meanwhile, a corrosion damage model is established based on basic mechanical parameters. Then a coupling factor is deduced to evaluate the correlation between corrosion damage and fatigue damage, and the corrosion-fatigue coupled damage model is established by using this coupling factor. Finally, a quasi-static test of Q345 angle steel is conducted to study the failure modes, the hysteresis curve and the variation of main performance evaluation parameters under three test conditions, and a corresponding coupled damage performance degradation model is established.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Junjie Wang
AU  - Chuntao Zhang
AU  - Ruheng Wang
PY  - 2018/03
DA  - 2018/03
TI  - Effect of Corrosion-Fatigue Coupled Damage on Mechanical Properties of Q345 Angle Steel
BT  - Proceedings of the 2018 International Conference on Mathematics, Modelling, Simulation and Algorithms (MMSA 2018)
PB  - Atlantis Press
SP  - 146
EP  - 150
SN  - 1951-6851
UR  - https://doi.org/10.2991/mmsa-18.2018.32
DO  - 10.2991/mmsa-18.2018.32
ID  - Wang2018/03
ER  -