File:Earthquake resistant submarine drydock block system design (IA earthquakeresist00luch).pdf

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Earthquake resistant submarine drydock block system design   (Wikidata search (Cirrus search) Wikidata query (SPARQL)  Create new Wikidata item based on this file)
Author
Luchs, James Kenneth.
image of artwork listed in title parameter on this page
Title
Earthquake resistant submarine drydock block system design
Publisher
Cambridge, Massachusetts : Massachusetts Institute of Technology
Description
CIVINS
Thesis (M.S. in Mechanical Engineering and Naval Engineer) Massachusetts Institute of Technology, May 1988
Includes bibliographical references (p. 166-167)
This thesis develops a 3-degree of freedom submarine drydock blocking system computer aided design package. Differential equations of motion are developed to take into account high blocking systems, wale shores, and side block cap angles. The computer program is verified by a case study involving the earthquake sliding failure of the USS Leahy (CG-16). A parametric study is conducted to determine the effects of wale shores, isolators, and block stiffness and geometry variations on system survivability. The effects of using earthquake acceleration time histories with differing frequency spectrums on system survivability is studied. None of eleven submarine drydock blocking systems studied survive to dry dock failure (0.26 g's) or even meet the Navy's current 0.2 g survival requirement. This shows that current Navy submarine drydock blocking systems are inadequate to survive expected earthquakes. Two design solutions are found that meet the dry dock failure requirements. The low stiffness solution uses dynamic isolators and rubber caps, and the high stiffness solution uses wale shores and rubber caps. The wale shore solution virtually prevents the submarine from moving horizontally relative to the dock floor. The isolator solution allows relatively large horizontal displacements to occur. Using the wale shore solution, the submarine experiences forces which are an order of magnitude higher than these seen by the isolator solution. Both design solutions can be constructed; however, there are cost and production interference concerns. Theses. (edc)

Subjects: Mechanical engineering; Naval architecture
Language en_US
Publication date 1988
publication_date QS:P577,+1988-00-00T00:00:00Z/9
Current location
IA Collections: navalpostgraduateschoollibrary; fedlink; americana
Accession number
earthquakeresist00luch
Notes some content may be lost due to the binding of the book.
Authority file  OCLC: 1043011284
Source
Internet Archive identifier: earthquakeresist00luch
https://archive.org/download/earthquakeresist00luch/earthquakeresist00luch.pdf

Licensing[edit]

Public domain
This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code. Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

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