开发一个生物忠实的人类脊柱模型,用于振动表征
Shivam Verma1, Arnab Banerjee2, Arnab Chanda3
1School of Interdisciplinary Research, Indian Institute of Technology (IIT) Delhi, India.
Medical engineering & physics
|June 13, 2025
概括
一个新的3D打印的人类脊柱模型,基于THUMS人形,准确模拟振动效应. 这种生物忠实模型有助于了解长期暴露于振动的健康风险.
科学领域:
- 生物力学 生物力学
- 人类对振动的暴露
- 3D打印应用 3D打印应用
背景情况:
- 每年有数百万人遭受与振动相关的健康问题.
- 现有的计算模型缺乏准确的脊柱结构和材料模拟.
- 长时间暴露于振动会导致严重的健康问题,如背痛和神经损伤.
研究的目的:
- 使用3D打印开发一个生物忠实的人类脊柱模型.
- 为了仔细模拟真正的人类脊椎的结构和材料特性.
- 评估模型在模拟振动对脊柱的影响方面的有效性.
主要方法:
- 使用3D打印技术开发了一个生物忠实脊柱模型.
- 使用了THUMS模拟模型 (AM50 V 4.02 步行者) 作为基础.
- 将模型暴露于垂直正弦振动 (1-20 Hz) 的不同强度 (1.1, 0.75, 0.4 m/s2).
主要成果:
- 在更高的振动幅度下,在2 - 3.5 Hz和4 - 6 Hz之间确定了共振峰值.
- 在较低的振动幅度下观察到多个共振峰值.
- 分析了L5到C1传染性曲线,以评估模型响应.
结论:
- 开发的3D打印生物忠实脊柱模型有效地模拟了垂直正弦振动效应.
- 该模型显示了研究振动对人类脊柱的健康影响的可行性.
- 与现有方法相比,这种进步为研究提供了更准确的工具.
相关概念视频
General Structure of a Vertebra
A typical vertebra, with the exception of the sacrum and coccyx, consists of a body, a vertebral arch, and seven different projections termed processes. The anterior portion of the vertebrae, the body, supports about half the body’s weight. The vertebral bodies progressively increase in size and thickness from the cervical region to the lumbar region of the vertebral column. The intervertebral discs present between the bodies of adjacent vertebrae firmly unites them, forming a continuous column.
Normal Strain under Axial Loading
Normal strain under axial loading is an important concept in the field of mechanics of materials. Axial loading implies the application of a force along the axis of a material, like a column or bar. This force can either compress or stretch the material. In the context of axial loading, normal strain is the deformation experienced by the material in the direction of the loading force. It's calculated as the change in length divided by the original length of the material. This unitless ratio...


