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ORIGINAL PAPER
Experimental and Numerical Analysis of Fracture in 41Cr4 Steel – Issues of the Stationary Cracks
1
Kielce University of Technology, Faculty of Mechatronics and Mechanical Engineering Department of Manufacturing Engineering and Metrology Al. 1000-lecia PP 7, 25-314 Kielce, Poland
Online publication date: 2018-03-14
Publication date: 2018-02-01
International Journal of Applied Mechanics and Engineering 2018;23(1):37-63
KEYWORDS
40H steelFEMJ-integralCTODcrack initiation momentstress distributionparameters of the geometric constraintsplastic region
ABSTRACT
This paper analyzes the process of fracture in 41Cr4 steel on the basis of experimental and numerical data obtained for non-propagating cracks. The author’s previous and latest experimental results were used to determine the apparent crack initiation moment and fracture toughness for the material under plane strain conditions. Numerical simulations were carried out to assess changes in the J-integral, the crack tip opening displacement, the size of the plastic region and the distribution of stresses around the crack tip. A complex numerical analysis based on the true stress-strain curve was performed to determine the behavior of 41Cr4 steel under increasing external loads.
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