A comparison of fillet weld strength and U.S. Navy design specifications for non-combatant ships and the economic implications
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Authors
McCabe, William Carl
Subjects
Fillet weld strength
Fillet weld
Weld strength
Navy design specifications
Non-combatant ships
Fillet weld
Weld strength
Navy design specifications
Non-combatant ships
Advisors
Masubuchi, Koichi
Date of Issue
1978-05
Date
May 1978
Publisher
Cambridge, Massachusetts; Massachusetts Institute of Technology
Language
en_US
Abstract
There is a great interest in the strength of fillet welds because the welding operation accounts for about 30% of the labor cost in planning and constructing ship hulls. One way to reduce welding cost is to reduce the required weld size. Background information is obtained by reviewing the major experimental and
theoretical work in the areas of static strength, fatigue strength , and shear strength of fillet welds.
In order to appreciate the conditions in the real world, design considerations, fabrication considerations, and corrosion considerations are discussed. Typical joints from existing U.S.
Navy ships are employed to obtain detailed geometry and local loading information to be used as input for a computer model which was developed at Massachusetts Institute of Technology which uses the finite element method for determining the static strength for fillet welds. In one particular joint a reduction of 30% in the required weld size is justified.
A future system for analyzing fillet weld strength is proposed and explained by the use of an example,
The economics of intermittent and continuous welds are examined, and the economic impact that a reduction in the required fillet weld size would have on ship construction cost is estimated.
Type
Thesis
Description
This thesis document was issued under the authority of another institution, not NPS. At the time it was written, a copy was added to the NPS Library Collection for reasons not now known. It has been included in the digital archive for its historical value to NPS. Not believed to be a CIVINS (Civilian Institutions) title.
Series/Report No
Department
Ocean Engineering
Organization
Massachusetts Institute of Technology
Identifiers
NPS Report Number
Sponsors
Ship Structure Committee, Project SR-1248 "Updating of fillet weld strength parameters for shipbuilding" DOT-CG-71455-A
Funder
Format
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.