Accession Number : ADA190234

Title :   Revised Impact Dynamic Design-Analysis Method (RIDDAM).

Descriptive Note : Interim rept. Oct 86-Sep 87,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s) : Bort, R L

PDF Url : ADA190234

Report Date : 10 Feb 1988

Pagination or Media Count : 87

Abstract : Theory and examples are shown for a feasible method of estimating responses of equipment to an impact of an exercise torpedo against the hull of a submarine. The equipment is modeled as a linear and elastic system whose noraml modes of vibration respond in accordance with their weight and frequency. A simple method is used for determining the effective weight of a normal mode. The method is applicable to multiple modes and independent motions of multiple supports. Keywords: Torpedo impact, Impact dynamic design, Analysis, Method.

Descriptors :   *SUBMARINE HULLS, *DYNAMIC RESPONSE, ELASTIC PROPERTIES, IMPACT, LINEAR SYSTEMS, MOTION, RESPONSE, SUPPORTS, TORPEDOES, VIBRATION, SUBMARINE EQUIPMENT, TRAINING AMMUNITION, EXERCISE HEADS, MATHEMATICAL MODELS, COMPUTERIZED SIMULATION, COMPUTER PROGRAMS

Subject Categories : Submarine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE