Accession Number:

AD0772484

Title:

Analysis of Rigid Polyurethane Foam as a Shock Mitigator

Descriptive Note:

Technical rept.

Corporate Author:

NAVAL ORDNANCE LAB WHITE OAK MD

Personal Author(s):

Report Date:

1973-08-06

Pagination or Media Count:

70.0

Abstract:

In problems of water impact, the compressive stress wave generated in a weapon vehicle at the surface of contact can be quite severe. The purpose of this report is to investigate the mitigation of shock and absorption of energy under impact-loading conditions through the use of crushable materials. Experimental data are presented on the mitigated impacts of a short steel projectile on a long aluminum rod. A theoretical analysis is formulated and the results are compared with the experimental results. Mitigators of varying cross-sectional area, as well as mitigators of constant cross-sectional area, are included. The dynamic properties of the rigid polyurethane foam were obtained experimentally and from the literature and used as input for the theoretical analysis. Modified author abstract

Subject Categories:

  • Torpedoes

Distribution Statement:

APPROVED FOR PUBLIC RELEASE