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Modeling Stress-Strain Curves at the Fracture Location of Human Ribs from Structural Dynamic Bending Tests

Tillis, Molly Kathryn
http://rave.ohiolink.edu/etdc/view?acc_num=osu1618848794671665

Abstract Details

2021, Master of Science, Ohio State University, Biomedical Engineering.
The objective of this study was to modify a previously developed method of calculating stress and modeling stress-strain curves during dynamic frontal bending tests of human ribs and to evaluate the impact of the updates made to the model on the material properties extracted from the model. 14 whole mid-level ribs were experimentally tested and their stress calculations were updated to include a radius of curvature from fitting logarithmic spirals to the rib. The strain was transformed from one of two cutaneous strain gages to the fracture location of the rib. The updated stress and strain were run through the previously developed stress-strain curve model and the elastic modulus was extracted. When compared to the elastic modulus from tensile coupon testing in the literature, the structural elastic modulus was higher due to a higher stress and lower strain experienced in structural tests. Future work should focus on developing a transfer function for structural material properties and validation using subject specific finite element models of structural rib tests. Having an accurate method of extracting material properties of ribs from structural tests would provide a large database of material properties of human ribs for a wide range of subjects.
Amanda Agnew, PhD (Advisor)
Yun Seok Kang, PhD (Advisor)
Biomechanics; Mechanical Engineering
rib model; stress-strain; structural; material

Recommended Citations

Citations

  • Tillis, M. K. (2021). Modeling Stress-Strain Curves at the Fracture Location of Human Ribs from Structural Dynamic Bending Tests [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1618848794671665

    APA Style (7th edition)

  • Tillis, Molly. Modeling Stress-Strain Curves at the Fracture Location of Human Ribs from Structural Dynamic Bending Tests. 2021. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1618848794671665.

    MLA Style (8th edition)

  • Tillis, Molly. "Modeling Stress-Strain Curves at the Fracture Location of Human Ribs from Structural Dynamic Bending Tests." Master's thesis, Ohio State University, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu1618848794671665

    Chicago Manual of Style (17th edition)

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This open access ETD is published by The Ohio State University and OhioLINK.