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ReakesC.the (final comments 2).pdf (3.47 MB)

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Nonlinear Fracture Mechanics Analysis of Threaded Fastener Geometry

Reakes, Clayton E, IV
http://rave.ohiolink.edu/etdc/view?acc_num=akron1447425945

Abstract Details

2015, Master of Science in Engineering, University of Akron, Mechanical Engineering.
The following thesis contains an investigation into the application of fracture mechanics techniques to threaded fastener geometry. Studies of compliance for two bolt sizes were conducted to determine a method of generalization. A commonality was found in the fit of a fifth order polynomial function of which constants can be extracted and tabulated. Values of J were then investigated for an array of crack sizes perpendicular to the crack front. Investigation of J values was also conducted on a crack with an orientation such that mode I, mode II and mode III loading had an influence on the crack front stress. It was found that the constraint of the crack influences the stress in the forward sector, resulting in the actual stress field deviating from the theoretical HRR solution. A two parameter J-Q approach was taken in defining the stress state ahead of the crack tip with increased accuracy. The effects of variations in crack geometry and location along the crack front were investigated showing significant influence on the constraint effect acting on the cracked region.
Xiaosheng Gao (Advisor)
Yalin Dong (Committee Member)
77 p.
Mechanical Engineering
fracture mechanics, j-integral, multi-parameter, j-q

Recommended Citations

Citations

  • Reakes, IV, C. E. (2015). Nonlinear Fracture Mechanics Analysis of Threaded Fastener Geometry [Master's thesis, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1447425945

    APA Style (7th edition)

  • Reakes, IV, Clayton. Nonlinear Fracture Mechanics Analysis of Threaded Fastener Geometry. 2015. University of Akron, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1447425945.

    MLA Style (8th edition)

  • Reakes, IV, Clayton. "Nonlinear Fracture Mechanics Analysis of Threaded Fastener Geometry." Master's thesis, University of Akron, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=akron1447425945

    Chicago Manual of Style (17th edition)

akron1447425945
1,798
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This open access ETD is published by University of Akron and OhioLINK.