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相关概念视频

Virtual Work for a System of Connected Rigid Bodies01:06

Virtual Work for a System of Connected Rigid Bodies

705
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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705

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相关实验视频

Updated: Jan 8, 2026

Creation of Patient-Specific Silicone Cardiac Models with Applications in Pre-surgical Plans and Hands-on Training
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在虚拟开放手术模拟中实时触觉式软体切割.

George Westergaard1, Mark Ellis1, Jacob Barker2

  • 1Department of Computer Science, Florida Polytechnic University, Lakeland, Florida, USA.

Computers & graphics
|December 17, 2025
PubMed
概括

这项研究介绍了软组织接的实时虚拟现实外科模拟器,提供双手触觉反. 该系统表现出稳定的物理和高率,为外科医生提供低成本,高保真度的培训工具.

关键词:
基于位置的扩展动力学.触觉学是指触觉学,是指触觉学.开放外科手术 开放外科手术手术模拟器手术模拟器这就是Suturing Suturing的意思.虚拟现实 虚拟现实 虚拟现实

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科学领域:

  • 医疗模拟 医疗模拟
  • 在手术中使用虚拟现实
  • 手术培训技术手术培训技术

背景情况:

  • 手术培训需要现实的实践环境.
  • 目前的虚拟现实 (VR) 工具往往缺乏足够的触觉反和复杂的物理模拟来进行接.
  • 需要为开放的外科手术程序提供可访问,高准确度的模拟平台.

研究的目的:

  • 开发和评估基于VR的实时开放手术模拟器,用于软组织接.
  • 评估系统在模拟各种接技术与双手触觉反方面的性能.
  • 调查用户对解剖现实主义的看法以及手术学员和专家的触觉反效果.

主要方法:

  • 开发一个VR模拟器,利用基于位置的 eXtended动态 (XPBD) 软体和线模拟.
  • 实施双手触觉反,以便在 suturing 过程中实现现实的交互.
  • 在四种常见的接技术 (钱包串,康奈尔,停留,伦伯特) 上进行性能测试,以测量率和粒子模拟能力.
  • 通过使用虚拟结直肠外科培训师 - 结直肠缩模拟器,对24名参与者进行了用户研究.

主要成果:

  • 模拟器实现了高速率 (50-80 FPS) 和多达4,155个粒子,在复杂的接任务中展示了稳定的实时性能.
  • 71%的用户将解剖现实主义评为中度至非常高.
  • 50%的人认为力量反是现实的,54%的人认为它是有用的,这表明有效的沉浸,但也可以改善触觉忠实度.

结论:

  • 开发的VR模拟器提供了一个低成本,高保真的平台,用于练习开放式手术.
  • 该系统有效地模拟了复杂的相互作用,如连续和结结结,使用稳定的实时物理.
  • 结果突出了VR模拟在外科教育中的潜力,同时强调了先进的触觉反对增强培训结果的重要性.