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Related Concept Videos

Virtual Work01:20

Virtual Work

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The principle of virtual work states that if a body is in static and dynamic equilibrium, then the sum of all the virtual work done by all external forces and couple moments for any given virtual displacement must be zero.
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Principle of Virtual Work: Problem Solving01:13

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The principle of virtual work is an essential concept in the field of mechanics and engineering. This is used to solve problems related to the equilibrium of a structure or system. It is based on the assumption that if a system is in equilibrium, the work done by all the forces during a virtual displacement is zero. This principle is applied by considering virtual displacements of the system and the corresponding work done by internal and external forces.
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Virtual Work for a System of Connected Rigid Bodies01:06

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Virtual work is a powerful method used to solve problems involving several connected rigid bodies. When the system is in equilibrium, virtual work is zero. This allows the calculation of the resulting forces when a system undergoes a virtual displacement. When attempting to analyze such a system, first, use a free-body diagram, where an independent coordinate represents the configuration of the links, and mark its deflected position resulting from the positive virtual displacement.
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Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy01:26

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Physical models representing molecular architectures of chemical compounds play essential roles in understanding chemistry. The use of molecular models makes it easier to visualize the structures and shapes of atoms and molecules.
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According to obedience research, we may harm others under the forceful pressures of an authority figure (Milgram, 1974). How about if the inappropriate orders were delivered with less force? The increasing interdependence between nurses and physicians compelled Hofling and his colleagues to explore nurses’ reactions to a potentially harmful medical request made by the perceived authority figure, the doctor (Hofling, Brotzman, Dalrymple, Graves, & Pierce, 1966). In this situation,...
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Author Spotlight: Segmentation and VR for Advanced Neurovascular Interventions
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High Fidelity Virtual Reality Orthognathic Surgery Simulator.

Venkata S Arikatla1, Mohit Tyagi2, Andinet Enquobahrie1

  • 1Kitware Inc., Carrboro, NC.

Proceedings of Spie--The International Society for Optical Engineering
|July 7, 2018
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Summary
This summary is machine-generated.

This study introduces a new simulation method for bone drilling and cutting in surgical training. It offers realistic haptic feedback for complex procedures like Bilateral Sagittal Split Osteotomy (BSSO) with low computational cost.

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Area of Science:

  • Medical simulation
  • Surgical training technology
  • Biomedical engineering

Background:

  • Surgical simulators enhance training for complex procedures like Bilateral Sagittal Split Osteotomy (BSSO).
  • Accurate simulation of mandibular cutting requires high-fidelity visual and haptic feedback.
  • Current simulation methods may face limitations in computational cost or feedback realism.

Purpose of the Study:

  • To present novel methods for simulating bone drilling and cutting in virtual surgery.
  • To achieve low computational cost while maintaining high-fidelity haptic feedback.
  • To improve the realism of surgical simulators for craniofacial procedures.

Main Methods:

  • Simulation of bone drilling using a virtual burr.
  • Simulation of bone cutting using a virtual motorized oscillating saw.
  • Integration of methods for real-time virtual surgery simulation with haptic feedback.

Main Results:

  • Developed methods for low computational cost bone drilling and cutting simulation.
  • Achieved high-fidelity haptic feedback during simulated surgical actions.
  • Demonstrated suitability for real-time virtual surgery applications.

Conclusions:

  • The presented methods effectively simulate key aspects of BSSO bone manipulation.
  • High-fidelity haptic feedback is crucial for realistic surgical simulation.
  • The approach supports advanced training and objective skills assessment in craniofacial surgery.