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Heart response to horizontal impulse

W Qassem1, M Jarrah, M Othman

  • 1Hijjawi Faculty For Applied Engineering, Yarmouk University, Jordan.

Journal of Medical Engineering & Technology
|May 23, 1998
PubMed
Summary
This summary is machine-generated.

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This study analyzed human body response to impulsive inputs using linear and nonlinear models. The largest heart acceleration transfer occurred at 2-3 Hz, with nonlinear models showing high-frequency attenuation.

Area of Science:

  • Biomechanics
  • Human Body Dynamics
  • Mechanical Engineering

Background:

  • Understanding the dynamic response of the human body to external forces is crucial for safety and design.
  • Previous models often simplified the complex mechanical properties of the human body.

Purpose of the Study:

  • To develop and analyze linear and nonlinear lumped body models for seated human response to impulsive horizontal inputs.
  • To investigate the acceleration transfer characteristics of the heart at various body segments.

Main Methods:

  • Development of lumped parameter linear and nonlinear models.
  • Simulation of impulsive horizontal inputs applied to different body segments.
  • Analysis of acceleration transfer magnitude and phase, including time histories.

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Main Results:

  • The largest heart acceleration transfer magnitude was observed in the 2-3 Hz frequency range.
  • Impulses applied to upper body segments induced a secondary peak in acceleration transfer around 10-12 Hz.
  • The nonlinear model demonstrated significant attenuation at frequencies above 10 Hz and less attenuation between 1-5 Hz.

Conclusions:

  • Lumped body models effectively simulate human dynamic response to impulsive inputs.
  • Frequency-dependent characteristics of heart acceleration transfer are significant.
  • Nonlinear models provide a more nuanced understanding of high-frequency damping in the human body.