Accession Number:

AD0733986

Title:

Impact Analysis of the Skull-Brain System.

Descriptive Note:

Interim rept.,

Corporate Author:

NAVAL AIR DEVELOPMENT CENTER WARMINSTER PA CREW SYSTEMS DEPT

Personal Author(s):

Report Date:

1971-12-02

Pagination or Media Count:

43.0

Abstract:

A basic one-dimensional multi-plate impact computer program has been adapted to a model of a non-penetrating blow applied to a three-layered skull and brain system. Model layer thicknesses are equal to the average size of the corresponding anatomical head layers. Three models of the skull-brain have been studied elastic tables and elastic diploe, elastic tables and elastic-plastic diploe, elastic tables and crushable diploe. All of these models are coupled to an inviscid, compressible fluid brain. The results showed that the energy transmitted to the brain layer with these three models was in the following decreasing order elastic, elastic-plastic, and crushable hydrodynamic foam. Several special situations with enlarged diploe thickness and increased acoustic impedance mismatch resulted in changes in the energy transmitted to the brain. The existence of potential sites of coup, contrecoup, and intermediate coup was substantiated. Author

Subject Categories:

  • Medicine and Medical Research

Distribution Statement:

APPROVED FOR PUBLIC RELEASE