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.

Report Date:

1988-02-10

Pagination or Media Count:

87.0

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