Accession Number:

AD0773859

Title:

A Distributed Parameter Model of the Inertially Loaded Human Spine: A Finite Difference Solution.

Descriptive Note:

Final rept. 1 Dec 71-1 Apr 73,

Corporate Author:

TULANE UNIV NEW ORLEANS LA BIOMECHANICS LAB

Report Date:

1973-11-01

Pagination or Media Count:

147.0

Abstract:

The prupose of this research was the development and solutions of nonlinear continuum models of the human spinal response to impact, with emphasis on the vertical impact-pilot ejection problem. A derivation is given for a general one-dimensional continuum model of the spine considered as a curved homogenous beam and subject to the eccentric inertial loading of the human torso. A reduction to a small strain, large deflection model is made by introducing the assumptions of linear elasticity. A further reduction to a small strain, small deflection model is made by assuming small curvatures. A three parameter viscoelastic model is also treated. Methods of solution for these nonlinear dynamic models are formulated using the finite difference calculus. Modified author abstract

Subject Categories:

  • Stress Physiology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE