NAUTICUS HULL RELEASE DOCUMENT

Transcription

1 NAUTICUS HULL RELEASE DOCUMENT JANUARY 2013 RELEASE

2 Copyright 2013 Det Norske Veritas AS All rights reserved. No part of this book may be reproduced, in any form or by any means, without permission in writing from the publisher. Published by Det Norske Veritas AS Veritasveien 1 N-1322 HØVIK, NORWAY Telephone: Fax: If any person suffers loss or damage which is proved to have been caused by any negligent act or omission of Det Norske Veritas, then Det norske Veritas shall pay compensation to such person for his proved direct loss or damage. However, the compensation shall not exceed an amount equal to ten times the fee charged for the service in question, provided that the maximum compensation shall never exceed USD 2 million. In this provision "Det Norske Veritas" shall mean the Foundation Det Norske Veritas as well as all its subsidiaries, directors, officers, employees, agents and any other acting on behalf of Det Norske Veritas

3 Contents 1 INTRODUCTION Purpose Jobs older than September CSR-Tank and CSR-Bulk Longitudinal positions in and the Rules PROGRAMS AND VERSIONS SYSTEM INFORMATION Software requirements Hardware requirements Operating system requirement Decimal Separator NEW FUNCTIONALITY Cross Sections Compartments and Loads Cross Section Analyses CORRECTIONS, UPDATES AND LIMITATIONS Cross Section Analysis Section Scantlings Rule Check Analyses Rudder FE Analyses GeniE NOTES ABOUT OFFICE 2007 AND Spreadsheets... 15

4 7 KNOWN ISSUES FEA GeniE... 24

5 January 2013 Page 5 of 24 1 Introduction 1.1 Purpose The purpose of this document is to inform the users about system requirements, new programs and functionalities, enhancements and bug fixes that are implemented in since previous release. Details about the implementations in all programs are not fully covered in this document, and for more information the user should consult the program documentations being a part of the local installations. For details about rule implementations in the programs, the user should consult the approval engineers for information about how to use the program for specific ship structures. For information on how to install the program, please consult the Installation Guide.pdf, which can be found on the root of the installation CD. 1.2 Jobs older than September 2006 It is no longer possible to access old hull jobs created on versions older than September This applies to the January 2011 release and later. The reason for this is that January 2011 was ported to Windows 7, and the technology used in versions earlier than September 2006 does not enable porting to Windows 7. For more information, please read document Convert Hull Jobs older than Sept. 2006, found in the online Nauticus Documentation. See also part 6 in this document. 1.3 CSR-Tank and CSR-Bulk CSR-Tank is in this document used as an abbreviation for IACS Common Structural Rules for Double Hull Oil Tankers. CSR-Tank is applicable for double hull oil tankers with length L 150 m. CSR-Bulk is in this document used as an abbreviation for IACS Common Structural Rules for Bulk Carriers. CSR-Bulk is applicable for bulk carriers with length L 90 m. 1.4 Longitudinal positions in and the Rules Length between perpendiculars in Please, note the following definition of Length btw. Perpendiculars, Lbp used in : The length between perpendiculars is the distance on the scantling draught waterline from the fore side of the stem to the after side of the rudder post, or to the centre of the rudder stock if there is no rudder post. This definition is strictly correct only for CSR-Tank but is assumed valid also for DNV 1A1 and CSR- Bulk in. Hence, this distance should be entered for Lbp for all class notations in!

6 January 2013 Page 6 of Longitudinal positions and lengths X LL L LL X # X NH L bp L d # X # 0 Stock= A.P. (NH) Rule Origin # n F.P. L LL = Freeboard length. Ref. ILLC, as amended (Resolution MSC.143(77) Reg. 3(1,a & c)) X LL = X coordinate measured from the aft end of the freeboard length L LL This is a new parameter introduced in the July 2010 edition of the Rules for CSR Bulk. X# = X coordinate measured from frame #0. X NH = X coordinate used in user interface and reports, is the distance from the rudder stock. L bp = the length between perpendiculars according to the definition in. L = Rule length. X = X coordinate used in the Rules and is measured from the aft end of L. d# = distance from frame #0 to the rudder stock. A.P. (NH) = origin of coordinate system used in user interface and reports = position of the rudder stock. Rule Origin = origin of coordinate system used in the Rules, denoted; - A.P. in DNV 1A1 and CSR-Tank - A.E. in CSR-Bulk #n = frame number for the considered position. F.P. = the intersection with the fore side of the stem with; - the summer load waterline for DNV 1A1 and CSR-Bulk - the scantling draught waterline for CSR-Tank Conversion between position X NH in and X in the Rules To convert between the longitudinal position used in user interface and reports, X NH, and the longitudinal position X used in the Rules, the following is applied: X = X NH (L bp - L) X NH = X + (L bp - L)

7 January 2013 Page 7 of 24 2 Programs and versions The following and Sesam programs are available in the January 2013 release: Program Version Rule Check D Beam 16.0 PULS GeniE Application Version Manager Presel Sestra Cutres Submod Xtract Postresp New and old releases of the different programs are available for download on our Customer Portal

8 January 2013 Page 8 of 24 3 System Information 3.1 Software requirements Excel and Word from Microsoft Office 2003, 2007 or 32 bits version of Internet Explorer 5.01 or later versions. Microsoft.NET Framework 4.0. Full version, not the limited Client version. 3.2 Hardware requirements Processor CPU Memory Minimum Memory Recommended Storage Also recommended 1.5 GHz 2 GB 4 GB 10 GB x 800 or larger screen resolution (Minimum 1024 x 768) - OpenGL hardware accelerator - Dual core processor 3.3 Operating system requirement Windows XP, Windows Vista or Windows 7. File system should be NTFS. 3.4 Decimal Separator Decimal separator (symbol) It is required to use. (dot) as decimal separator for some of the programs (e.g. Word and Excel report from Section Scantlings). Open Control Panel Regional Settings to inspect and modify the separator symbols. If changing Decimals Symbol sign given in regional setting from what is default for selected country, change Decimal Symbol both for numeric and currency values. Otherwise, the RCXL spreadsheets may produce wrong result List separator List separator sign must be different from the decimal separator used. Use comma, or semicolon ;

9 January 2013 Page 9 of 24 4 New Functionality 4.1 Cross Sections A new option for exporting scantlings to file is introduced. The file is text based and has extension.pwx. It s available from the context menu in tree view of Cross Sections tool. The import function is slightly changed so that used will be asked for filename before any actions are done. Both old pw and new pwx files can be selected. As a consequence the used can no longer directly import 2DL and ' NV5030 files, but must instead use New button and then Open 2DL or NV5030 file within Section Scantlings. 4.2 Compartments and Loads Generation of compartment is based upon first scantling within each cross section extent. Finding correct compartment for consecutive scantlings within same extent may fail if geometry is different. In such cases a manual mapping needed. A new feature for manual mapping of compartments is therefore added under the Compartmentation tab. It s disabled if not required by the model. 4.3 Cross Section Analyses This tool is redesigned and the layout is slightly changed. The functionality is however the same. 1A1 simplified fatigue analysis according CN 30.7 Relative deflections and double hull bending stresses are now available for DNV 1A1 fatigue analyses.

10 January 2013 Page 10 of 24 5 Corrections, Updates and Limitations 5.1 Cross Section Analysis Limitations Compartment mapping, simplified fatigue analysis according to CN 30.7 In some cases, with complicated compartment configuration, the mapping between compartments in the fatigue analysis and the compartments in Compartments and Loads will fail. This mapping can then be done by the user by using the Manual mapping -tool in Compartments and Loads tab Compartmentation. If Cross Section Analysis is entered without properly compartment mapping, a warning is given in the messages-window at the bottom. It is important not to overlook this message as this is the only warning given. The fatigue analysis can be run without any more warnings given, but then missing compartment mapping will lead to wrong corrosion additions and missing compartment data and loads. Mapping compartments in Section Scantlings will not affect the fatigue analysis in Cross Section Analysis. 5.2 Section Scantlings Updates DNV Rules Container and slender ships (IM 1895): o o f2-factor is removed from report. Removed possibility to overwrite f2*. o The requirement for extent of high tensile steel is now using f2* instead of f2. o The side shell plating requirement Pt.3 Ch.1 Sec.7 C101 was using Pt.3 Ch.1 Sec 8 C 102 for deck plating stresses and Pt.3 Ch.1 Sec.6 C 302 for bottom plating stresses. These are dependent on f2b and f2d. The requirement is now updated to use Pt. 5 Ch.2 Sec 6 B 300 instead which uses f2*. All Rules IM 1897: Minimum thickness requirements are now calculated for plates, stiffeners and transverse stiffeners that are not subjected to either external or internal pressure. IM 1905: Previously a default sloshing length and breadth were set if the specified value was 0. This is now removed so that the specified sloshing length and breadth are always used.

11 January 2013 Page 11 of 24 Offshore vessels Moment capacity renamed to Capacity check. Removed Shear capacity. Capacity check for offshore is always using gross instead of net thicknesses Corrections DNV Rules Error in calculation of minimum web thickness has been fixed. This error was introduced when the updates for the Jan 2009 rules was added. It showed up when there was a ballast-tank, peak tank or cargo area next to the ship side. IM 1898: Buckling of plates and stiffeners: Pt. 3 Ch. 1 Sec. 13 B 206, which treats stresses for ships with high speed and large flare in forebody, is now included in the calculations. Ore carrier: Added warning for plates and stiffeners that might be affected by Pt. 5 Ch. 2 Sec. 12 C603, C604, C706 and C707. IM 1920: Pt. 3 Ch. 1 Sec. 8 C303: The k value was earlier wrong for stiffeners in deck structures not on a boundary in cargo oil and ballast tanks. This has now been corrected. IM 1922: Simplified fatigue according to CN 30.7: pdt (pressure at waterline) was earlier calculated with the y-value of the stiffener, but it should have used the y-value of the cross section at waterline. This is now corrected. CSR-Tank Rules The CSR-Tank Rule check is updated according Rule Change Notice 1 (1 July 2010 consolidated version). IMU 875: In some cases the material factor k was 1.0 when calculating the requirements for section modulus amidships when the actual cross section was not amidships ( MIDSHIP SECTION in Hull Girder Strength Requirements in the report). This is now corrected. IM 1848: For CSR-Tank and CSR-Bulk the default material factor in the plate dialog was wrong when adding new plates in areas with higher strength steel. This is now corrected. CSR-Bulk Rules The CSR-Bulk Rule check is updated according Rule Change Notice, Number 1 to the 2010 Edition. IM 1848: For CSR-Tank and CSR-Bulk the default material factor in the plate dialog was wrong when adding new plates in areas with higher strength steel. This is now corrected.

12 January 2013 Page 12 of Limitations CSR-Bulk Rules The specific requirements for ships with length less than 150 metres are not included. Bilge plate requirements, Ch 6, Sec 1, [2.3]: For the transition zone between the flat bottom and the curved bilge, the bilge plate requirements are not specifically considered in the Rules. Thus the calculated requirements are limited to cases where the curved bilge area is modelled with a longitudinal stiffener at the transition point between the flat bottom and the curved bilge. The same limitation applies to the transition zone between the curved bilge and the flat ship side. Supported configuration: Stiffener at transition point. Not supported configuration: Stiffener not at transition point Buckling strength of curved plates: Plates with a varying curvature (or having both flat and curved parts) are not covered by the Rules and should be specially considered. DNV Rules 1A1 fatigue strength requirements for bulk carriers Loads from bulk cargoes are not included in the fatigue calculations.

13 January 2013 Page 13 of Rule Check Analyses Updates 1A1, Welding (Welding_0301.xls) Updated according to the Rules of January A1, Minimum thickness requirements (MinThick1201.xls) Included vessel types: Barge, Bulk Carrier (Non CSR), Container Carrier, Fishing Vessel, Offshore Service Vessel, Ore Carrier, Standby Vessel, Stern Trawler. CSR-Bulk, Buckling (CSR-Bulk_Ch6_Sc3_Buckling.xls) Updated according to the Rules of July CSR-Bulk, Web stiffeners on primary support members (CSR-Bulk_Ch6_Sc2_WebStiffeners.xls) Updated according to the Rules of July CSR-Tank, Design Load Combinations (CSR-Tank_PressureLocSupMemb.xls, CSR- Tank_PressurePriSupMemb.xls, CSR-Tank_PriSupMemb.xls) Design Load Combination S+D is updated according to the Rules w.r.t. P in for Cargo tanks including cargo tanks designed for water ballast. 20' Containers in 40' Cellguides (MixedContainerStowageJuly11.xls) In the option for Varying container masses the program assumed that that all stacks started at level 1. This limitation is removed so that each stack may now start on any level. Hold mass curves according to C.N (HoldMassCurvesCN_31_1_10.xls) Updated according to the Rules of December 2012 and July 2011 for Ore carriers Corrections Buckling of stiffened curved plate according to DNV-RP-C202 (StiffenedCurvedPlate.xls) IM 1919: Fixed typing error in formula. 98 instead of G Limitations 1A1, Accelerations (Accelerations.xls) NB! The input is referring to x as Distance from AP. This is correct only when L = L bp. Otherwise, the user should specify x as the distance from the aft end of L. 5.4 Rudder Cone connections The program is updated according to the Rules of January 2013.

14 January 2013 Page 14 of FE Analyses GeniE Updates CSR-Tank The CSR-Tank implementation is updated according Rule Change Notice 1 (1 July 2010 consolidated version): Internal tank pressure for cargo tanks (S+D): P in = f density (P in-tk + P valve P in-dyn ). Corrosion addition: The distance 3m below top of tank is measured parallel to the deck. DNV Rules Standard design and fatigue loading conditions for container carriers are implemented according to January 2012 version of the Rules Limitations DNV Rules Internal members and plate boundaries for ballast tanks and cargo oil tanks have to be split manually in GeniE at 1.5 m below weather deck tank top in order to get correct corrosion additions. Plates and stiffeners that span over compartments with different corrosion additions have to be split manually in GeniE at the compartment boundaries in order to get correct corrosion additions. Boundary conditions at the end planes and the CL symmetry plane of the model are only applied to intersection lines between plates and the planes. Loads for bulk carriers and ore carriers are not implemented. CSR-Tank Internal members and transverse plate boundaries for ballast tanks and cargo oil tanks have to be split manually in GeniE at 3 m below top of tank in order to get correct corrosion additions. Plates and stiffeners that span over compartments with different corrosion additions have to be split manually in GeniE at the compartment boundaries in order to get correct corrosion additions.

15 January 2013 Page 15 of 24 6 Notes about Office 2007 and Spreadsheets The majority of the spreadsheets where modified in the January 2011 release in order to pass the compability checker within Office 2007 and Older/existing spreadsheets already included in a Job will naturally not be improved or fixed by this release. They will likely give warnings and/or error messages (dependent on Office version and security settings). These kind of messages are however not likely to affect calculations and results. All spreadsheets are dependent on embedded macros (VBA code). Such macros are by default disabled in Office 2007/2010 to enhance security. There are several ways to enable macros. Here are three alternatives: a) Add DNV to Trusted Publishers. b) Add Hull Job Directory to Trusted Locations c) Enable content upon opening of each spreadsheet. Alternative a) is recommended practice and may be used since all spreadsheets in this release are digitally signed by DNV. It s only necessary to do this once. Old Jobs with existing spreadsheets from previous releases are however not signed. Alternative b) is therefore better for users who work with older jobs. It s only necessary to do this once or when the Hull Job Directory is changed. Alternative c) may always be used but is not recommended as common practice How to add DNV to Trusted Publishers in Office Open a signed spreadsheet Do not press Enable Content as this will only add this spreadsheet to registry for trusted workbooks. Select instead the File tab.

16 January 2013 Page 16 of 24 Click on the Enable Content and select Advanced Options. Select Trust all documents from this publisher, then OK. DNV is now defied as trusted publisher.

17 January 2013 Page 17 of How to add Hull Job Directory to Trusted Locations in Office Current Hull Job Directory is found under Settings in Hull Explorer: Start Excel and select File tab and Options menu. Press the Trust Center Settings.. button under Trust Center.

18 January 2013 Page 18 of 24 Select Trusted Locations and press Add new location enter your Hull Job Directory (default is C:\Documents\DNV\Nauticus\Vessels). Remember to tick the Subfolders of this location are also trusted. Press OK to close the menus.

19 January 2013 Page 19 of How to add DNV to Trusted Publishers in Office Press Options Select Trust all documents form this publisher and press OK.

20 January 2013 Page 20 of How to add Hull Job Directory to Trusted Locations in Office The current Hull Job Directory is found under Settings in Hull Explorer: Start Excel and select the special circular Office button in upper left corner. Then press the Excel Options button. Press the Trust Center Settings.. button in Trust Center.

21 January 2013 Page 21 of 24 Press Add new location and enter your Hull Job Directory (default is C:\Documents\DNV\Nauticus\Vessels). Remember to tick the Subfolders of this location are also trusted. Press OK three times.

22 January 2013 Page 22 of Working with older Hull spreadsheets in Office 2007/2010. Spreadsheets from previous Hull releases will in most cases work ok with Office 2007 and Various warnings and error messages may however appear. Enabling of macros is described above and it is recommended to add Hull Job Directory to Trusted Locations if there are many old spreadsheets. Some few spreadsheets will report errors during calculations and/or entering of data. In such cases it is recommended to create a new spreadsheet from the latest release and re-enter the same input data. The most common are compability warnings upon saving. These warnings can be ignored. To unmark the checkbox named Check compatibility when saving this workbook will prevent this message from reappearing for this spreadsheet Cases when the Signature is discarded. The Signature of signed Excel workbooks is valid as long as the structure and macro code remain intact. This means that if a new worksheet is added to the workbook the Signature will be invalid. There are two programs in RuleCheck XL for which this may happen, namely: CSR-Tank_PriSupMemb.xls and CSR-Bulk_HoldMassCurves.xls. In these programs additional worksheets may be created and the following message may be displayed when saving the program:

23 January 2013 Page 23 of 24 If the workbook is saved the Signature is discarded. The consequence of this is that the next time the workbook is opened a message asking the user whether the included macros should be allowed to run. Please, allow the macros to run in order to make the program work as intended.

24 January 2013 Page 24 of 24 7 Known Issues The status of known issues, program errors and limitations are continuously updated and may be found in our Customer Portal. 7.1 FEA GeniE GeniE may not be available from FEA GeniE jobs. This is a known issue when all the following conditions are fulfilled: 1. GeniE is not installed before installation of. 2. GeniE is not selected as part of installation. 3. GeniE is installed in a separate installation after. To solve this problem, edit the file Hull.config located in the Hull installation folder, e.g. C:\Program Files\DNVS\NauticusHull\Feb2010\Hull.config. Modify the line <add key="genie" value=" "/> by including the correct path to the GeniE executable. For example: <add key="genie" value="c:\program Files\DNVS\GeniE\Program\GenieR.exe"/>