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Modeling and Simulation of Tissue Tearing and Failure for Surgical Applications

Barlingay, Manish

Abstract Details

2012, MS, University of Cincinnati, Engineering and Applied Science: Mechanical Engineering.

The use of modeling and simulation is growing rapidly for use in applications such as the surgery simulations, injury mechanics, tissue engineering, etc. The aim of this study is to model and simulate tissue tearing and failure for use in such applications. The thesis work is divided into two parts.

In the first part, the goal is to characterize the mechanics of tearing in thin soft materials. We use the cohesive zone modeling approach to characterize the propagation of tears in a processed meat product (PMP). The bulk response of the PMP is modeled with a hyperelastic material model and the interface with a modified version of the traction-separation law proposed by Park, Paulino and Roesler. A multistep optimization approach is developed to determine the bulk and the cohesive model parameters from uniaxial extension and tearing experiments.

In the second part, the goal is to build a framework for conducting finite element simulations of various mesh fixation techniques used in hernia repair surgeries. We construct finite element models to simulate the failure of the abdominal fasical tissue-surgical mesh interface when held together with surgical sutures in the first case and surgical glue in the second. A ductile damage model is used to simulate tissue failure in the sutured fixation model while a bi-linear traction-separation cohesive model is used to simulate interfacial failure in the glued fixation model. The overall force-displacement response is analyzed in both cases and the trend is compared with the experimental response. The trend in both cases is found to match closely with the experimental response.

Kumar Vemaganti, PhD (Committee Chair)
Esra Roan, PhD (Committee Member)
David Thompson, PhD (Committee Member)
115 p.

Recommended Citations

Citations

  • Barlingay, M. (2012). Modeling and Simulation of Tissue Tearing and Failure for Surgical Applications [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1342729583

    APA Style (7th edition)

  • Barlingay, Manish. Modeling and Simulation of Tissue Tearing and Failure for Surgical Applications. 2012. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1342729583.

    MLA Style (8th edition)

  • Barlingay, Manish. "Modeling and Simulation of Tissue Tearing and Failure for Surgical Applications." Master's thesis, University of Cincinnati, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1342729583

    Chicago Manual of Style (17th edition)