nauticus machinery - dnv

Nauticus Machinery Release Note – Version 11.2 (October 2012)

Nauticus Machinery v11.2 (October 2012) Release Note

DET NORSKE VERITAS

DNV SOFTWARE Veritasveien 1, 1363 Høvik, Oslo, Norway

http://www.dnvsoftware.com © Copyright Det Norske Veritas. All Rights Reserved.

No reproduction or broadcast of this material is permitted without the express written consent of DNV. Contact [email protected] for more information.


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CONTENT

1 Introduction ............................................................................................................ 4 1.1 Purpose ............................................................................................................ 4

2 New enhancements and fixed defects .................................................................... 4 2.1 New calculation tools introduced in v11.0 ...................................................... 4 2.2 Nauticus Machinery Workflow Manager ........................................................ 4

2.2.1 Documentation and examples .................................................................. 4

2.2.2 Library for diesel engine excitations and mass-elastic data ..................... 5

2.2.3 Company logo in reports and auto-recovery of model files .................... 8

2.3 Nauticus Gear Rating and Faceload calculation tools ..................................... 9 2.4 Nauticus Shaft Alignment calculation tool ................................................... 10 2.5 Nauticus Shaft Fatigue calculation tool ........................................................ 12 2.6 Nauticus Torsional Vibration calculation tool .............................................. 13

2.7 Nauticus Crankshaft Fatigue calculation tool ............................................... 14 2.8 Nauticus Propeller Blade tool ....................................................................... 14

3 Overview of all enhancements and defects fixed in v11.1 .................................. 15 3.1 Enhancements implemented .......................................................................... 15

3.2 Defects fixed ................................................................................................. 16 4 Overview of all enhancements and defects fixed in v11.2 .................................. 17

4.1 Enhancements implemented .......................................................................... 17 4.2 Defects fixed ................................................................................................. 18


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1 Introduction

1.1 Purpose

Nauticus Machinery v11.2 is a minor update to the v11.0 release in March 2012 and

the v11.1 release in June 2012.

This Release Note gives an overview of the high level enhancements introduced in

Nauticus Machinery v11.0 as well as the enhancements and defects that have been

fixed v11.1 and v11.2.

2 New enhancements and fixed defects

40+ enhancements and 15+ defects have been fixed in Nauticus Machinery v11.2.

2.1 New calculation tools introduced in v11.0

Nauticus Machinery v11.0 contains the following new calculation tools:

- Nauticus Propeller Blade based on DNV Classification Note 41.5

- Nauticus Gear Rating “Ice” based on DNV Classification Note 51.1

- Nauticus Shaft Fatigue “Ice” based on DNV Classification Note 51.1

The new shaft and gear tools can be considered as extensions to the current tools, as

they cover the new Baltic (FSICR) and Polar Ice Class Rules.

2.2 Nauticus Machinery Workflow Manager

The Nauticus Machinery Workflow Manager is the starting point to all calculation

tools in Nauticus Machinery. In previous releases, both a “lite” and an “advanced”

configuration of the Workflow Manager could be selected during installation. It was

also possible to switch these profiles runtime. In v11.0 the two profiles have been

merged into one common profile.

Summary of the most important changes in the Workflow Manager:

- The application will automatically jump back to the “Projects and calculations”

task when the activated calculation is closed

- Improved performance for remote databases

- New “configuration-dialog” appearing first time you enter the “Projects and

calculations” task

- Changed column names and order in the project list

- Improved “send calculation by email” enhancement with direct interface to

Microsoft Outlook

- New “function tree” where calculations on the same project can be organized

in more detailed levels/folders

2.2.1 Documentation and examples

The “Getting started” task contains up to date user manuals and example models for

all the calculation tools. It also contains script-examples for the Nauticus Torsional


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Vibration and Nauticus Shaft Alignment tools (as these tools have got a scripting

interface). In addition there are some new quick-guides for Nauticus Torsional

Vibration and Nauticus Shaft Alignment. The purpose of these documents is to give

the user a quick introduction to all the tools. It is recommended to read the quick-

starts and look at the example models/scripts first, and then use the user manuals as

reference later.

2.2.2 Library for diesel engine excitations and mass-elastic data

The purpose of the engine library is to make it easier to save and reuse typical engine

data that is used over and over again for various models.

Such data can be:

- Standardized engine excitation files from MAN and Wärtsilä

- Standardized mass elastic files from the above mentioned designers

This kind of data is usually available on the engine manufacturer’s extranet web-

portals, but the engine library introduces a more efficient way to reuse such data in the

torsional vibration models.

Engine excitation files (also called harmonics) are the recommended way to specify

the excitation data in a steady state torsional vibration analysis. It is a more accurate

method compared to the empirical approach which is also offered in the Nauticus

Torsional Vibration tool.

With the mass-elastic files you can easily build up a complete diesel engine model in

Nauticus Torsional Vibration with few mouse clicks.

Screen shot of the engine library showing some MAN excitation data:


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Seamless integration between the engine library and the torsional vibration tool:

Read MAN mass-elastic data files and automatically convert it to JavaScript:


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2.2.3 Company logo in reports and auto-recovery of model files

It is possible to specify the company name and logo, so that it appears in all the

printouts from the various calculation tools (default is DNV).

The auto-recovery function can be used to recover models that have been lost due to

an unexpected shutdown of the computer.


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2.3 Nauticus Gear Rating and Faceload calculation tools

There are no changes in the Nauticus Gear Faceload tool, but the Nauticus Gear

Rating tool has been upgraded to calculate according to DNV Classification Note 51.1

“Ice strengthening of propulsion machinery” and the DNV Rules for Baltic and Polar

ice class.

New input screen for the ice-related parameters in Nauticus Gear Rating:

New result view for the ice-related calculations in Nauticus Gear Rating:


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2.4 Nauticus Shaft Alignment calculation tool

The Nauticus Shaft Alignment tool has been subjected to major changes both in the

user interface and in the solver.

For the user interface there is a new property grid on the right-hand side and the

number of pop-up dialogues has been reduced. Changes in the model are applied by

selecting a model element and specifying the new parameters in the property grid. All

the user interface actions are scripted (JavaScript-syntax), so it is possible to “play-

back” scripts to create complete models. The scripting capabilities are very powerful

and provide an efficient way of building models from scratch. The “Getting started”

task also contains some scripting examples for typical systems.

The solver has been rewritten and is now based on the finite element method. The

layout of the various results have been changed and improved. In addition the

optimization enhancement has been rewritten.

The new version is backward compatible with v5.5 (use the “Data convert” function)

and v8.0 or later (just open the old models directly and they will be converted).

Summary of the most important changes in Nauticus Shaft Alignment:

- Bearings are de-coupled from the shaft geometry

- Property script instead of input-dialogues

- Improvements in charts

- New finite element based solver

- Changes in the results (layout)

- Support for scripting


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- Oil film analysis

- Simplified modeling of stern tube bearings

- Condition dependent wear on bearings

- Condition dependent hull deflection on bearings

- New optimization routine

- New number format dialog

This is the new user interface with the property grid on the right side:


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2.5 Nauticus Shaft Fatigue calculation tool

The new version of Nauticus Shaft Fatigue has got support for DNV Classification

Note 51.1 “Ice strengthening of propulsion machinery” in addition to the existing

Class Note 41.1 (Main class). The new tool is now capable of calculated safety factors

and accumulated fatigue required by the new Polar and Baltic ice class rules.

New ice class related input and output fields have been added:

New “step” in the shaft section wizard:


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2.6 Nauticus Torsional Vibration calculation tool

The Nauticus Torsional Vibration tool have much more capabilities compared to the

2006-version. The user interface was totally redesigned in the v10.0 release and we

have focused a lot on providing a very user friendly graphic modeler and result viewer.

The solver is much more powerful and the performance is improved significantly. The

new tool is capable of handling everything from simple electric propulsion systems up

to more sophisticated systems with several engines, complex gears, propeller lines and

power take off (PTO). Due to the handling of more advanced systems we have

introduced scripting-capabilities in the new tool. This is a very powerful and efficient

way to build up models. There are also some functions to import standardized mass

elastic files from the engine manufacturer to build up a model much more efficiently.

Summary of the most important changes in Nauticus Torsional Vibration:

- Printing of the mass elastic view

- Stiffness and inertia calculator

- Constant speed and variable MIP, new load case for generator set

- Add more details to the report

- Improved handling of linear elastic couplings

- Show barred speed range and MCR speed on stress plots

- Move buttons for report and printout (more user-friendly)

Example from a 2-stroke diesel engine system:


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2.7 Nauticus Crankshaft Fatigue calculation tool

Nauticus Crankshaft Fatigue calculates the safety against fatigue failure in pin and

journal fillets and in oil bores, as well as safety against slippage for semibuilt

crankshafts.

The Nauticus Crankshaft Fatigue tool is based on a version of DNV Classification

Note 41.2 that is not official yet. The current version of the tool shall not be used in

production, but solely for test-purpose until the new Classification Note is approved.

Summary of the most important changes in Nauticus Crankshaft Fatigue:

- View results in FlowDocument instead of result fields

- Show allowable nominal torsional stress result

2.8 Nauticus Propeller Blade tool

A new calculation tool for propeller blade is available in Nauticus Machinery v11.0.

The new tool calculates according to DNV Rules and Classification Note 41.5.


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3 Overview of all enhancements and defects fixed in v11.1

All enhancements and defects implemented in v11.1 are listed below. The details in

each enhancement and defect can be provided upon request to

[email protected]. Please refer to the enhancement or defect ID-number.

3.1 Enhancements implemented

Id Tool Name

2414 Installer/Setup Define and create new SQLExpress instance through

command line in server-setup

2364 Shaft Alignment Change criteria for high speed license

2513 Shaft Alignment Show mass data in input data text-result

2466 Shaft Alignment Correct the description text in the external load dialog

2404 Shaft Alignment Use more relevant default units and formats in Unit

Settings dialog

2319 Torsional

Vibration Improve sort and reorder enhancement for mass and

stiffness elements

2488 Workflow

Manager Improve search for projects

2489 Workflow

Manager Load projects after user interface is rendered, keep recent

search criteria and select recent project

mailto:[email protected]


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3.2 Defects fixed

Id Tool Name

1983 Installer/Setup Installation fails on Spanish operating system

2042 Installer/Setup Not able to back up the database to the desktop

2090 Propeller Blade "Local skew" cannot accept a number less than 10

1999 Shaft Alignment Button “Bearing tilt and offset” is always disabled

2007 Shaft Alignment Bearing offset in text-result is not showing the influence of

thermal expansion

2021 Shaft Alignment Decimal symbol not handled correctly in data grid for

condition dependent input data

2022 Shaft Alignment Not possible to display GAP and SAG chart result when

SAG=0 or GAP=0

2032 Shaft Alignment The condition dependent index is not updated for condition

dependent properties

2039 Shaft Alignment Incorrect handling of bearing wear in condition dependent

input

2043 Shaft Alignment Bearing length is not correct when importing from Excel

2044 Shaft Alignment Cannot calculate specific converted model

2058 Shaft Alignment Enable/disable property of bearing still visible in the

property grid but not used in calculations

2070 Shaft Alignment Positive horizontal moment is acting in the wrong direction

2074 Shaft Alignment Incorrect propeller data listed in input data result for

specific model

2076 Shaft Alignment Remove "Import ALIGN file" feature

2085 Shaft Alignment Correction of reaction point position is not taken into

account in whirling calculation

2093 Shaft Alignment Legend text in chart is always showing the forward

whirling result

1632 Torsional

Vibration

Decimal symbol not handled correctly in property grid

when using comma as decimal separator

1972 Workflow

Manager

Cannot open attachments from advanced profile after

database is converted

2026 Workflow

Manager

Not able to view history for converted calculations from the

advanced profile

2073 Workflow

Manager

Duplicated projects after converting projects from the

advanced profile

2086 Workflow

Manager

Unit column on project list not set correctly for VerIT-users


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4 Overview of all enhancements and defects fixed in v11.2

All enhancements and defects implemented in v11.2 are listed below. The details in

each enhancement and defect can be provided upon request to

[email protected]. Please refer to the enhancement or defect ID-number.

4.1 Enhancements implemented

ID Tool Name

2706 All Update the user manuals and release notes

2773 All Add splash screen according to new branding profile

2563 Installation Change installation name in Control Panel

2712 Installation New versions shall have independent unit-settings

3042 Installation Add optimization example to Getting started task

2309 Installation Upgrade the DNVS License Manager from v11.5 to 11.5.2

2361 Shaft Alignment Create simplified crankshaft model by script

2410 Shaft Alignment View the total load/pressure and shaft slope of grouped

bearings split in multiple reaction points

2417 Shaft Alignment Copy values from first operating condition to all other

conditions

2448 Shaft Alignment Support new DNV Rules Pt.4 Ch.4 Sec.1 B902 for

hydrodynamic lubrication

2452 Shaft Alignment Bearing offset optimization of direct coupled systems

2457 Shaft Alignment Support unit settings in the material dialog

2459 Shaft Alignment Improve description of propeller properties and support

entrained water calculation

2462 Shaft Alignment Use keyboard shortcuts in script fields

2493 Shaft Alignment Change in condition dependent reaction point position

should change the offset if the bearing is sloped

2501 Shaft Alignment Show position of open flanges, temporary supports and

jacks in text-result

2503 Shaft Alignment Specify mass name and show in text-results

2514 Shaft Alignment Show shaft description in shaft section result and joint data

in input data result

2527 Shaft Alignment Units for propeller visual properties should be user

specified

2530 Shaft Alignment Change reaction point of bearing by adjusting AftExtension

property

2555 Shaft Alignment Change definition of gap values

2565 Shaft Alignment Show relative nominal slope in bearing according to DNV

Rules Pt.4 Ch.4 Sec.1 F405

2570 Shaft Alignment Support more unit types for the reaction influence number

result

2580 Shaft Alignment Show new deformation column in bearing reaction text-

result

2583 Shaft Alignment Complete jacking calculation even though model contains

horizontal loads or offset changes

2584 Shaft Alignment Complete calculation of reaction influence numbers even

though model contains horizontal loads or offset changes

2589 Shaft Alignment Complete jacking calculation even though some bearings

are unloaded

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2603 Shaft Alignment Change the way spacer-rings are shown in the gap-result

2608 Shaft Alignment Change the description text for some bearing properties

2616 Shaft Alignment Add bearing symbols in the chart-result and line spacing

between each shaft-section in text-result

2662 Shaft Alignment Improve documentation and examples related to the

bearing offset optimization feature

2676 Shaft Alignment Correct the shaft data for the example in the quick-guide

2689 Shaft Alignment Show the jack-load for the adjacent bearing first

2690 Shaft Alignment Add more bearing and propeller entrained water data to the

input data result

2707 Shaft Alignment Improve modeling of single- and double sloped stern-tube

bearings

2736 Shaft Alignment Take the conditional parameters into account in relative

slope calculation

2769 Shaft Alignment New text-result for bearing loads in all conditions

2770 Shaft Alignment Show shaft-description in state of... results

2262 Torsional Vibrations Enhance the stiffness and inertia calculator (shaft wizard)

2371 Torsional Vibrations Fix the index when reordering masses

2430 Torsional Vibrations Improve the shaft wizard user interface

2432 Torsional Vibrations Add Nauticus excitation format in Engine Library

2499 Torsional Vibrations Improve the sort and reordering feature

2681 Torsional Vibrations Import 4-stroke harmonic file from MAN Diesel

2403 Workflow Manager Keep selection in search fields after refreshing the project

list

2582 Workflow Manager Add new application icons according to new branding

profile

2674 Workflow Manager Expose the Temp-folder variable in the Settings-task

3172 Workflow Manager Improve Temp-folder setting

4.2 Defects fixed

Id Tool Name

2231 Gear Faceload The torsion deflection line color in result "Pinion

elastic curve, shaft" is not correct

2004 Shaft Alignment Bearing symbols in whirling plot are not correctly

positioned

2007 Shaft Alignment Bearing offset in text-result is not showing the

influence of thermal expansion

2041 Shaft Alignment Short shaft element of 1 mm is inserted underneath

bearing in specific models

2070 Shaft Alignment Positive horizontal moment is acting in the wrong

direction

2074 Shaft Alignment Incorrect propeller data listed in input data result for

specific model

2085 Shaft Alignment The ReactionPointCorr-value is not taken into

account in whirling calculation

2295 Shaft Alignment Some issues with deflection in whirling plot


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2315 Shaft Alignment Corrections in whirling results

2130 Torsional Vibrations The convert function always fail when converting

from v5.5 to v11.0

2169 Torsional Vibrations Plotting only legends if selecting all the stiffness

elements in specific models

2173 Torsional Vibrations Correct the IACS UR M68 acceptance criteria result

2210 Torsional Vibrations Data convert failed when Decimal symbol set to

Comma

2259 Torsional Vibrations Both dots and commas are in the results when set the

decimal separate as comma

2820 Torsional Vibrations Firing angle for B-bank cylinders in vee-engine

exceeds 720 degrees

2911 Torsional Vibrations The calculated response torque on the gear mesh is not

correct

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