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Modeling of a pendulum test including skin and muscles under compression

Title
Modeling of a pendulum test including skin and muscles under compression
Author
유홍희
Keywords
Kelvin-Voight model; pendulum test; skin and muscles under compression; stretch reflex
Issue Date
2015-11
Publisher
ICCB
Citation
International Journal of Bioengineering and Life Sciences Vol:2, No:11, 2015 , Page. 3-4
Abstract
Pendulum tests were used to identify a stretch reflex and diagnose spasticity. Some researches tried to make a mathematical model to simulate the motions. Thighs are subject to compressive forces due to gravity during a pendulum test. Therefore, it affects knee trajectories. However, the most studies on the pendulum tests did not consider that conditions. We used Kelvin-Voight model as compression model of skin and muscles. In this study, we investigated viscoelastic behaviors of skin and muscles using gelatin blocks from experiments of the vibration of the compliantly supported beam. Then we calculated a dynamic stiffness and loss factors from the experiment and estimated a damping coefficient of the model. We also did pendulum tests of human lower limbs to validate the stiffness and damping coefficient of a skin model. To simulate the pendulum motion, we derive equations of motion. We used stretch reflex activation model to estimate muscle forces induced by the stretch reflex. To validate the results, we compared the activation with electromyography signals during experiments. The compression behavior of skin and muscles in this study can be applied to analyze sitting posture as wee as developing urgical techniques.
URI
https://waset.org/abstracts/32596http://hdl.handle.net/20.500.11754/28756
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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