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Performing Microscope-Mounted Y-Shaped Cutting Tests
06:15

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Published on: January 20, 2023

Modeling the forces of cutting with scissors.

Mohsen Mahvash1, Liming M Voo, Diana Kim

  • 1Mechanical Engineering Department, The Johns Hopkins University, 223 Latrobe Hall, 3400 North Charles Street, Baltimore, MD 21218 USA. mahvash@jhu.edu

IEEE Transactions on Bio-Medical Engineering
|March 13, 2008
PubMed
Summary

This study introduces an analytical model for scissor cutting forces, enhancing surgical simulations. The model accurately predicts average forces for real-time haptic rendering in virtual environments.

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Area of Science:

  • Engineering
  • Biomechanics
  • Robotics

Background:

  • Surgical simulation requires accurate modeling of tool-tissue interaction.
  • Existing haptic feedback methods for scissor cutting rely on data replay.
  • A physics-based model is needed for dynamic and realistic simulation.

Purpose of the Study:

  • To develop an analytical model for calculating forces during scissor cutting.
  • To enable real-time haptic rendering for surgical training.
  • To validate the model across various materials.

Main Methods:

  • Utilized contact and fracture mechanics principles.
  • Modeled cutting as sequential deformation and fracture phases.
  • Integrated torque-angle response and fracture toughness.

Main Results:

  • The analytical model accurately predicts average forces applied to scissors.
  • The model demonstrates computational efficiency for real-time applications.
  • Experimental validation confirmed model accuracy with paper, plastic, cloth, and chicken skin.

Conclusions:

  • The developed analytical model provides a computationally efficient method for simulating scissor cutting forces.
  • This model enhances the realism of haptic feedback in surgical simulations.
  • The model's accuracy across diverse materials supports its broad applicability.