Numerical Simulation of the Influence of Width of a Prefabricated Crack on the Dimensionless Stress Intensity Factor of Notched Semi-Circular Bend Specimens
Joint Authors
Zhang, Sheng
Wang, Longfei
Gao, Mingzhong
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-05-05
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
To analyze the effect of the width of a prefabricated crack on the dimensionless stress intensity factor of notched semi-circular bend (NSCB) specimens, ABAQUS software was employed to perform numerical calibration of the crack tip stress intensity factor for the width of prefabricated cracks in the range of 0.0∼2.0 mm.
The relative errors of the dimensionless stress intensity factor for different widths of prefabricated cracks were analyzed.
The results indicate that the dimensionless stress intensity factor shows an approximate linear increase as the width of the prefabricated crack increases.
The longer is the length of the prefabricated crack, the “faster” is the increase in speed.
The effect of the dimensionless support spacing on the increase in the speed of the dimensionless stress intensity factor due to the increase in crack width is minimal.
When the prefabricated crack width is 2.0 mm, the maximum relative error of the dimensionless stress intensity factor is 4.325%.
The new formula for the dimensionless stress intensity factor that eliminates the influence of the width of a prefabricated crack is given, which provides a theoretical basis for the more accurate fracture toughness value measured using an NSCB specimen.
American Psychological Association (APA)
Zhang, Sheng& Wang, Longfei& Gao, Mingzhong. 2019. Numerical Simulation of the Influence of Width of a Prefabricated Crack on the Dimensionless Stress Intensity Factor of Notched Semi-Circular Bend Specimens. Shock and Vibration،Vol. 2019, no. 2019, pp.1-10.
https://search.emarefa.net/detail/BIM-1211154
Modern Language Association (MLA)
Zhang, Sheng…[et al.]. Numerical Simulation of the Influence of Width of a Prefabricated Crack on the Dimensionless Stress Intensity Factor of Notched Semi-Circular Bend Specimens. Shock and Vibration No. 2019 (2019), pp.1-10.
https://search.emarefa.net/detail/BIM-1211154
American Medical Association (AMA)
Zhang, Sheng& Wang, Longfei& Gao, Mingzhong. Numerical Simulation of the Influence of Width of a Prefabricated Crack on the Dimensionless Stress Intensity Factor of Notched Semi-Circular Bend Specimens. Shock and Vibration. 2019. Vol. 2019, no. 2019, pp.1-10.
https://search.emarefa.net/detail/BIM-1211154
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1211154