Fracture mechanics theoretical modelling and FEM analysis of 3-Point Bending Specimen suffering cyclic loads

Author

Huang, Yayu ; Hu, Xiangping

Author_Institution

Fac. of Mech. & Electr. Eng., Kunming Univ. of Sci. & Technol., Kunming, China

fYear

2011

fDate

12-15 June 2011

Firstpage

308

Lastpage

312

Abstract

Fracture mechanics theoretical modelling and Finite Element Method analysis of a pre-cracked 3-Point Bending Specimen (3PBS) have been conducted in this paper. Using the equivalent system of the specimen, fracture mechanical characteristics have been analyzed and the theoretical Dynamic Stress Intensity Factor (DSIF) is obtained later and used together with the Pairs theorem to analyze the fatigue life time of the specimen. Based on the simulations from ABAQUS, dynamic characteristics of the pre-cracked 3PBS are obtained and verified. The results are further analyzed and discussed with special concern on fracture mechanics characteristics of the material and will provide a guideline for further research and practical design.

Keywords

bending; crack-edge stress field analysis; fatigue cracks; finite element analysis; fracture mechanics; 3-point bending specimen; ABAQUS; FEM analysis; Pairs theorem; cyclic loading; dynamic stress intensity factor; fatigue life time analysis; finite element method; fracture mechanics theoretical modelling; precracks; Analytical models; Fatigue; Finite element methods; Load modeling; Materials; Mathematical model; Stress; 3-Point Bending Specimen; Dynamic Stress Intensity Factor; fatigue life analysis; simulation; theoretical modelling;

fLanguage

English

Publisher

ieee

Conference_Titel

Reliability, Maintainability and Safety (ICRMS), 2011 9th International Conference on

Conference_Location

Guiyang

Print_ISBN

978-1-61284-667-5

Type

conf

DOI

10.1109/ICRMS.2011.5979281

Filename

5979281