Affiliation:
1. Key Laboratory of Pressure Systems and Safety (MOE), School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China
Abstract
Abstract
Three-point bending specimen with fixed constraints is a novel small specimen test technique, which can simultaneously obtain creep deformation and creep fracture data. However, the current research only focused on the small deformation theoretical analysis, which is contrary to the actual experiment results. In this study, the general deformation theory was introduced to analyze creep deformation behavior of three-point bending specimen with fixed constraints at the large deformation stage. Based on this theory, the equivalent stress and strain were analyzed. Then, the feasibility and accuracy were verified by comparing with the experimental data of A7N01 aluminum alloy at 380 °C. The results show that the regressed creep parameters agree well with those from the uni-axial ones. It can be found that the equivalent stress obtained by the general deformation theory can be well used to life prediction analysis of A7N01 aluminum alloy.
Funder
National Natural Science Foundation of China
Subject
Mechanical Engineering,Mechanics of Materials,Safety, Risk, Reliability and Quality
Reference27 articles.
1. Creep Fracture Parameter C* Solutions for Axial Internal and External Surface Cracks in Pressurized Cylinders;Eng. Fract. Mech.,2020
2. A Basis for Selecting the Most Appropriate Small Specimen Creep Test Type,2014
3. Homogenized Elastic-Viscoplastic Behavior of Plate-Fin Structures at High Temperatures: Numerical Analysis and Macroscopic Constitutive Modeling;Int. J. Mech. Sci.,2010
4. Creep Properties and Failure Assessment of New and Fully Repaired P91 Pipe Welds at 923 K;Proc. Inst. Mech. Eng. Part L: J. Mater. Des. Appl.,2004
Cited by
4 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献