Sesam was first made in 1969 with the purpose to perform strength analysis of large ship structures. Since then it has evolved both in capabilities and technology. It started as a mere finite element system – today it is based on modern concept modelling techniques integrated with advanced hydrodynamics. It has grown from being an in-house Software tool to become a leading world wide tool for strength assessment and sea-keeping of ship and offshore structures. It is used to design ships and offshore structures in the range from shallow to ultra deep waters in harsh environment. Sesam is unique as it can address both fixed and floating structures as well as risers, moorings, umbilicals and pipelines also known as SURF. DNV GL has a high focus on supporting the green energy market and Sesam supports several aspects of this industry ranging from offshore installations to in-place assessment of wind turbine structures. Sesam is used to document that the vessel or installation is fit for purpose. Typical tasks are to document compliance with design standards, statutory regulations or other criteria for HSE. Sesam supports the range from code checking to fatigue of both frame and shell structures.

1. DNV GL © 2013 1 February 2015 SAFER, SMARTER, GREENERDNV GL © 2013
1 February 2015
Ole Jan Nekstad, Product Director Sesam
SOFTWARE
SesamTM - 45 years of success
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A complete system for strength assessment and
seakeeping analysis of ship and offshore structures

2. DNV GL © 2013 1 February 20152
SesamTM
Innovative offshore engineering made easy

3. DNV GL © 2013 1 February 2015
Sesam – a 45 years success story
 The most complete system for strength
assessment and sea-keeping analysis
– Based on FE theory
 Used to design ships, offshore floaters,
offshore fixed installations and offshore
wind turbine structures
– API, AISC, NORSOK, EUROCODE, ISO
 Covers all engineering tasks during the
lifetime of the structure, mooring lines,
risers, umbilical and pipe lines
including marine operations
– New design, modifications, life extensions
 Covers simulation driven design in very
early design
 Great import capabilities from other
CAE and CAD systems
 More than 200 organizations use
Sesam – thousand of users rely on us
on a daily basis
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4. DNV GL © 2013 1 February 2015
Sesam – the most complete design analysis system
 GeniE – structural analysis
 HydroD – hydrodynamics
 DeepC – mooring & riser analysis
 Sima – marine operations
 Sesam Pipeline – offshore pipeline design
 Sesam Wind – integrated with turbine loads
 CAESES – simulation driven design
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5. DNV GL © 2013 1 February 2015
GeniE for structural analysis
 Modelling and analysis of fixed and floating structures
 Wave and wind loads of fixed structures
 Non-linear pile/soil analysis
 Code check of beams and tubular joints
 Buckling code check of plates
 Fatigue and earthquake analysis
 Non-linear collapse and accidental analysis
 Launch and upending analysis of jackets
 3 Cargo hold analysis of ships (CSR-H and ORS)
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6. DNV GL © 2013 1 February 2015
HydroD for hydrostatics and dynamics
 Hydrostatic and stability analysis of offshore floaters
 Hydrodynamic analysis of ships and offshore floaters
– Without forward speed, frequency & non-linear time domain
– With forward speed, linear & non-linear time domain
– For offshore floaters, Morison elements are part of analysis
 Statistical post-processing and animations
 Creates loads for use by GeniE
 Creates hydrodynamic models for use by DeepC and Sima
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Sway
0
0.2
0.4
0.6
0.8
1
1.2
1.4
4
6
8
10
12
14
16
18
20
22
24
26
28
30
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Period
Amplitude

7. DNV GL © 2013 1 February 2015
DeepC for mooring, riser and umbilical analysis
 Motion analysis of coupled systems – floaters and lines
 Riser design – code checking, fatigue and vortex induced
vibrations
 Umbilical cross section design and fatigue
 Mooring analysis – frequency and time domain
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Capacity Curve
0.0
100
200
300
400
500
600
700
800
900
1000
1100
1200
0.0 0.04 0.08 0.12 0.16 0.2 0.24 0.28
Curvature [1/m]
Tension[kN]
100% Utilisation
80% Utilisation

8. DNV GL © 2013 1 February 2015
Sima for marine operations
 A complete tool for simulation of marine operations, from modelling to results
 Build upon state of the art software for dynamic analysis
 Graphical user interface makes modelling fast and easy
 Helps engineers to distinguish challenging tasks in the preparation stage
 Gives decision support during actual operation
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9. DNV GL © 2013 1 February 2015
Sesam Pipeline for design of offshore pipelines
 Pipeline design according to DNV OS-F101,
RP-F105, RP-F109, RP-F110
– Fatigue of free span pipelines
– On bottom stability
– Buckling
– Code checking; typically burst, collapse of
empty pipe line, propagating buckling
 Covers all phases from conceptual design to
lifetime extensions
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10. DNV GL © 2013 1 February 2015
Sesam Wind for design of offshore wind structures
 Structural design according to the IEC61400-3/DNV-OS-J101 standard
– Fatigue calculations by combined time series simulation of wind and wave loads
– Code check according to ISO, NORSOK, Eurocode and API/AISC
– Pile/soil analysis is included
 Non-linear coupled analysis of fully integrated system for OWT
– Includes controllers for generator torque and blade pitch
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11. DNV GL © 2013 1 February 2015
CAESES for simulation driven design
• The only available software today
that makes simulation-driven design
easily applicable in both
hydrodynamic and aerodynamic
design
• Software drives simulation process
and creates hundreds of design
variants instead of 3-5 as typical
• To explore design space in a very
early status or to optimize specific
design
• Can be coupled with existing CFD
codes or other evaluation codes, acts
as flexible CAE environment /
designer’s workbench for the
integration of many different tools
• Applicable for hull forms,
appendages, pumps/compressors
and turbines
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12. DNV GL © 2013 1 February 2015
A strong value proposition
 Particularly strong in modelling, meshing (local
model in global model), re-design, stress
evaluation, fatigue analysis, reporting & model
verification – all supported by a graphical tool fit
for very large models
 More flexibility in your engineering resource base
when the same engineering platform is used
across disciplines and across project types
 Less efforts in training and education when your
engineers are using the same engineering platform
 Provision of support and assistance based on many
years of design experience
 Our main goal is to help reduce engineering hours
and at the same time increase the robustness of
structures
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13. DNV GL © 2013 1 February 2015
The largest offshore structures are designed by Sesam
 Some of many references
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Troll A
Largest structure moved
by man
472 m tall
656.000 tonnes
303 m WD
1995
Kvitebjørn
Deepest jacket in the North Sea
194 m WD
Harsh environment
Very long pipelines
2003
Ichthys semi submersible
Largest semi in the world
Complex marine operations
2016

14. DNV GL © 2013 1 February 2015
Sesam - one model throughout the life time
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In-place and construction
Deflections, Stresses,
Code-check, Fatigue, Earthquake
Life extension, requalification
Push-over, collapse, accidents,
boat impacts
Transportation, lifting, launching
Deflections, Stresses,
Code-check, Fatigue
Operation, modification
Corrosion allowance &
Weight control
Deflections, Stresses,
Code-check, Fatigue

15. DNV GL © 2013 1 February 2015
Hydrostatic and
Hydrodynamic analysisModelling
Sesam – a fully integrated analysis system
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Coupled mooring and riser
analysis
FEM files
Hydrodynamic
coefficients
Structure with internal and
external loads
Global stress deflections and
fatigue screening
Local stress deflections and
fatigue
Automatic load transfer to
structure model
Global FE analysis
and fatigue
Local FE analysis
and fatigue

16. DNV GL © 2013 1 February 2015
Sesam – the most efficient platform for offshore engineering
 Our strategy is to become market leader for fixed structures, maintain our
position as No. 1 for floaters & pipelines and increase market shares for SURF
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Jacket Jack-up
TLP Semi-
submersible
FPSO
Risers, mooring lines,
pipelines

17. DNV GL © 2013 1 February 2015
SAFER, SMARTER, GREENER
www.dnvgl.com
The world-leading provider of software for a
safer, smarter and greener future
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