ssc - 419 supplemental commercial design guidance for fatigue ship ...

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AcknowledgmentThis work was conducted under contract DTCG39-99-C-E00221 with the U.S. Coast Guard Researchand Development Center. The authors would like to express appreciation to the members of the ProjectTechnical Committee SR-1403 of the Ship Structure Committee, Phil Rynn of ABS, David Kihl of NSWCCD,David Stredulinski of DREA, and especially to the PTC chair, Mike Sieve of NAVSEA. The assistance of theABS SafeHull staff led by Gary Horn was essential, including the help from John Baxter and especially the ableassistance of Ping Liao, whose in-depth expertise in SafeHull was invaluable. Yung-Sup Shin of ABSprovided valuable advice on loading. Tom Ingram and Joan Watts of ABS provided help with the specialversion of SafeHull for containerships less than 130 meters long. Alex Ritchie of DREA provided informationon Canadian ships. Ron Saber of Midas produced the initial input to SafeHull.8
Table of ContentsSection Title PageExecutive SummaryiiGlossary of Termsvi1. Introduction 1-11.1 Purpose 1-11.2 Commercial Approaches and Practices for the Structural Design of the Ship 1-1Hull Girder for Environmental Loads1.3 Operational Environments Used in Commercial and USN Ship Design 1-1Practice1.4 Hull Response Methods 1-21.5 Commercial Structural Details 1-21.6 Nominal Strength of the Hull Girder 1-31.7 Secondary Loads Prediction 1-31.8 In-service Hull Girder Inspection Requirements 1-41.9 Application of Commercial Methods for Fatigue Analysis of Existing Ships 1-41.10 Shortcomings/Limitations of the Commercial Approaches 1-51.11 Suggested Modifications to the Commercial Approaches 1-52. Current Commercial Practices for the Structural Design of the Ship Hull Girder 2-1for Environmental Loads2.1 Purpose 2-12.2 Introduction 2-12.3 ABS Approach and Practice 2-32.3.1 Typical Rule Requirements 2-32.3.2 ABS SafeHull and Dynamic Loading Approach 2-72.3.3 ABS Fatigue Analysis 2-132.3.4 Relationship Between ABS Rules, SafeHull, and DLA 2-152.3.5 Simplified and Spectral Approaches to Fatigue 2-172.3.6 ABS Benchmarking of the Fatigue Design Procedure 2-182.4 Design Criteria for U.S. Navy Ships 2-192.5 Canadian Navy Structural Design Criteria 2-212.5.1 Longitudinal Strength 2-212.5.2 Side and Bottom Shell 2-222.5.3 Fatigue 2-232.6 Commercial Rules for Military Ships 2-232.7 Naval Ship Assessment by the SafeHull System 2-232.8 Summary 2-243. Operational Environments Used in Commercial and USN Ship Design Practice 3-13.1 Purpose 3-13.2 Introduction 3-13.3 ABS Fatigue Analysis 3-53.4 U.S. Navy Fatigue Analysis 3-63.5 Summary 3-139
Page 1: SSC - 419SUPPLEMENTAL COMMERCIALDES
Page 4 and 5: CONVERSION FACTORS(Approximate conv
Page 6: able to be applied to a naval ship.
Page 9: Whipping—Vibration of the hull gi
Page 13 and 14: Section Title Page8.2 Commercial Sh
Page 15 and 16: Figure Title Page5.4 Design Code S/
Page 17 and 18: 1.2 Commercial Approaches and Pract
Page 19 and 20: Navy have standards for hull girder
Page 21 and 22: 2. Current Commercial Practicesfor
Page 23 and 24: Structural Design of the Ship Hull
Page 47 and 48: 3. Operational Environments Used in
Page 49 and 50: Operational Environmentsfrom the U.
Page 51 and 52: Operational Environmentsships monit
Page 53 and 54: Operational Environmentsship specif
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Page 57 and 58: Operational EnvironmentsShip G Clas
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Ship Lifetime Bending and Torsional
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Fatigue Data for Ship Structural De
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Supplemental Commercial Design Guid
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11. Suggested Modifications to the
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Suggested Modifications to the Safe
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12. CONCLUSIONSThe ABS SafeHull Pha
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13. RECOMMENDATIONSThe following re
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14. REFERENCESAASHTO, Standard Spec
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ReferencesHeyburn, R. and D. Riker,
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ReferencesNaval Ships’ Technical
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ReferencesSNAME, Application of Pro
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Guide for the Use of Commercial Des
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Phase A analysis. This guide provid
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Table 1 Stiffener Library Data File
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SafeHull, so it is not necessary to
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Figure 4 General Data for Section D
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to define the Bilge, Gunwale, or In
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Figure 6 The Stiffener Properties S
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Figure 7 2-D Shell Shape Definition
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produce a screen similar to Figure
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in sequence. If errors are found in
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7.2.2.2 Once the SafeHull Phase A h
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many limitations associated with th
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App A-1APPENDIX AFATIGUE ANALYSIS S
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App A-3STF#SafeHullSTF IDTOE ID Dis
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App A-5Table A.2 SafeHull Phase A F
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App A-7STF#Table A.3 SafeHull Phase
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App A-9STF#SafeHullSTF IDTOE ID Dis
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App A-11CutoutLABELID LOCDist.fromB
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App B-2STF#SafeHullSTF IDTable B.1
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App B-4STF#SafeHullSTF IDTOE ID Dis
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App B-10CutoutLABEL ID LOCTable B.2
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App C-1APPENDIX CFATIGUE ANALYSIS S
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App C-3STF#SafeHullSTF IDTOE ID Dis
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App C-9CutoutLABELID LOCDist.fromBL
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App C-11STF#SafeHullSTF IDTOE IDDis
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App C-17CutoutLABELID LOC Dist.from
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App D-2Table D.1 SafeHull Phase A F
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App D-4STF#SafeHullSTF IDTOE IDDist
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App D-6Table D.2 SafeHull Phase A F
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App D-8STF#SafeHullSTF IDTOE IDDist
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App D-10STF#SafeHullSTF IDTOE IDDis
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App E-1APPENDIX EFATIGUE ANALYSIS S
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App E-3STF#SafeHullSTF IDTOE ID Dis
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App E-5STF#SafeHullSTF IDTOE ID Dis
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App E-7STF#SafeHullSTF IDTOE IDDist
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App E-9STF#SafeHullSTF IDTOE IDDist
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App F-2Table F.1 SafeHull Phase A F
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App F-4FatigueSTF Stiffener " ID Di
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App F-6FatigueSTF Stiffener " ID Di
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App F-8Table F.2 Phase A Fatigue An
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App G-2ST#StiffenerTable G.1 SafeHu
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App G-4ST#StiffenerTOE ID Dist.from
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App G-6ST#StiffenerTOE ID Dist.from
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App G-8CutoutTable G.2 Phase A Fati
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App G-10CutoutDist.fromBL(m)Long`lS
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App G-12STF#Stiffener TOE ID Dist.f
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App G-18Table G.4 Phase B Analysis
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App H-1APPENDIX HFATIGUE ANALYSIS S
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App H-3ST#StiffenerSafeHullSTF IDTO
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App H-5ST#StiffenerSafeHullSTF IDTO
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App H-7CutoutTable H.2 Phase A Fati
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App I-1APPENDIX IFATIGUE ANALYSIS S
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App I-3STF#SafeHullSTF IDTOEID Dist
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App I-11STF#SafeHullSTF IDTOEID Dis
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App I-13CutoutLABELID LOCTable I.2
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App I-15Table I.3 Phase A Fatigue A
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App I-27CutoutLABELID LOCDist.fromB
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App J-2STF#SafeHullSTF IDTOETable J
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App J-4STF#SafeHullSTF IDTOEID Dist
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App J-6CutoutLABELID LOCTable J.2 P
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App J-8CutoutLABELID LOCDist.fromBL
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App J-10CutoutLABELID LOCDist.fromB
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APPENDIX KOPNAV Instruction 4700.7J
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(4) Preventive maintenance actions
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the Integrated Logistic Support (IL
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(2) Operational Forces Resource Spo
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APPENDIX LS9086-CN-STM-040Naval Shi
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Naval Ship’s Technical Manual Cha
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Table 079-53-1. Source Documents fo
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1230/004Contaminated Oil Tank Clean
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is, full cleaning) is attributable
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Ships Technical Manual Chapter 631,
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090-1.70 Shaft Alley. Particular em
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cladding or surfacing shall be acco
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APPENDIX MUnderwater Ship Husbandry
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Section 2 Personnel and Equipment R
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the average percent of block areas
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APPENDIX NThe Corrosion Control Inf
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APPENDIX OUnited States CodeTitle 1
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