Development of Shipboard Equipment Shock Survivability Assessment Technique
Loading...
Authors
Kwon, Young
Didoszak, Jarema M.
Gottfried, Brian
Subjects
UNDEX
underwater explosion
FSST
shock hardening
equipment survivability
underwater explosion
FSST
shock hardening
equipment survivability
Advisors
Date of Issue
2018-04
Date
Presented April 10-12, 2018
Period of Performance: 10/15/2017-10/14/2018
Period of Performance: 10/15/2017-10/14/2018
Publisher
Monterey, California: Naval Postgraduate School
Language
en_US
Abstract
Project Summary: Navy ships are expected to perform their mission in an arduous combat environment. Shock loading from non-contact explosions is one of many mechanisms that have the potential to cause extensive damage to these vessels. In particular, underwater explosions (UNDEX) resulting from mines, torpedoes, or other waterborne explosive devices pose considerable risk not only in structural failure, but also in terms of equipment damage, personnel casualties, and ultimately mission kill. So critical is this issue that the Navy has outlined shock hardening requirements for surface combatants in OPNAVINST 9072.2A. Per this instruction, the Naval Sea Systems Command (NAVSEA) established general guidelines for the verification, validation, and certification of surface ship shock hardness in the technical publication T9072-AF-PRO-010. While this document establishes a general method of equipment qualification, standardized criterion that constitutes a survivable design is less rigidly defined. This current effort focuses on assessment of the current technique so as to investigate uncertainties in the shock level response experienced during the shock verification process as compared to the actual failure parameters. Using basic analytic approaches and finite element modeling and simulation, an in-depth review of shock failure cases was conducted. Key parameters influencing the response and uncertainty in failure prediction were ascertained. These results will be used in follow-on work to generate a standardized procedure for the determination of shock related failure in shipboard equipment. It is anticipated that once validated, this approach can then be applied across various shipboard equipment and systems in the evaluation of shock hardening.
Type
Report
Description
NPS NRP Executive Summary
Series/Report No
Department
Organization
Naval Research Program (NRP)
Naval Research Program
Identifiers
NPS Report Number
NPS-18-N393-A
Sponsors
CNO
N00
N00
Funder
NPS-18-N393-A
Format
6 p.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.