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Fineblanking of High Strength Steels: Control of Materials Properties for Tool Life

Gram, Michael D.
http://rave.ohiolink.edu/etdc/view?acc_num=osu1280869210

Abstract Details

2010, Master of Science, Ohio State University, Materials Science and Engineering.
In order to assess the possibility of fineblanking high strength steels while preserving acceptable tool lifetimes, materials with a wide range of ultimate tensile strengths (200-1500MPa) were fineblanked experimentally and simulated with finite element modeling. Good agreement was achieved and a refined relationship between cutting force and material strength was discovered. The strain at which the cutting force is maximized was shown to be several times greater than the uniform tensile strain, suggesting the concept of manipulating material strain hardening properties to increase material strengths markedly while maintaining acceptable tool stress levels and thus lifetimes. The concept was shown viable using finite element simulations. The results show the need for steels optimized for fineblanking applications. They will have almost opposite properties of advanced high strength steels, which are optimized for sheet formability by increasing their strain hardening at large strains.
Robert H. Wagoner, PhD (Advisor)
Peter M. Anderson, PhD (Committee Member)
55 p.
Materials Science
fineblanking; shearing; high strength steels; finite element modeling; cutting force; Voce; Hollomon

Recommended Citations

Citations

  • Gram, M. D. (2010). Fineblanking of High Strength Steels: Control of Materials Properties for Tool Life [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1280869210

    APA Style (7th edition)

  • Gram, Michael. Fineblanking of High Strength Steels: Control of Materials Properties for Tool Life. 2010. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1280869210.

    MLA Style (8th edition)

  • Gram, Michael. "Fineblanking of High Strength Steels: Control of Materials Properties for Tool Life." Master's thesis, Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1280869210

    Chicago Manual of Style (17th edition)

osu1280869210
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© 2010, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.