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首页> 外文期刊>Journal of Biomechanics >Experimental modal analysis on fresh-frozen human hemipelvic bones employing a 3D laser vibrometer for the purpose of modal parameter identification.
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Experimental modal analysis on fresh-frozen human hemipelvic bones employing a 3D laser vibrometer for the purpose of modal parameter identification.

机译:为了进行模态参数识别,使用3D激光振动计对新鲜冷冻的人半盆骨进行了实验模态分析。

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摘要

To provide a close-to-reality simulation model, such as for improved surgery planning, this model has to be experimentally verified. The present article describes the use of a 3D laser vibrometer for determining modal parameters of human pelvic bones that can be used for verifying a finite elements model. Compared to previously used sensors, such as acceleration sensors or strain gauges, the laser vibrometric procedure used here is a non-contact and non-interacting measuring method that allows a high density of measuring points and measurement in a global coordinate system. Relevant modal parameters were extracted from the measured data and provided for verifying the model. The use of the 3D laser vibrometer allowed the establishment of a process chain for experimental examination of the pelvic bones that was optimized with respect to time and effort involved. The transfer functions determined feature good signal quality. Furthermore, a comparison of the results obtained from pairs of pelvic bones showed that repeatable measurements can be obtained with the method used.
机译:为了提供接近实际的仿真模型,例如为了改善手术计划,必须通过实验验证此模型。本文介绍了使用3D激光测振仪确定人骨盆骨的模态参数的方法,该参数可用于验证有限元模型。与以前使用的传感器(例如加速度传感器或应变仪)相比,此处使用的激光振动法是一种非接触式,非交互​​性的测量方法,可以在全局坐标系中实现高密度的测量点和测量。从测量数据中提取相关的模态参数,并提供给模型验证。 3D激光振动计的使用允许建立用于实验检查骨盆骨骼的过程链,该过程链在涉及的时间和精力方面进行了优化。确定的传递函数具有良好的信号质量。此外,比较从成对的骨盆骨获得的结果表明,使用所使用的方法可以获得可重复的测量结果。

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