Product Family Brochure
SACS® Analysis Packages
Design and Analysis Software for Offshore Structures & Vessels
Offshore Structure Enterprise:
The Professional Static Offshore package contains capabilities
required for typical offshore jackets, wharfs, and dolphin
structures. It includes the interactive graphics modeler with
advanced 3D capabilities, SACS IV solver and interactive
graphics post processor, Seastate, Joint Can, Pile, Combine,
Gap, Tow, and LDF large deflection. The package also includes
automatic model generation, beam and finite element
capability, steel code check and redesign, environmental
load generation, tubular connection check, single pile/soil
interaction, inertia and moving load generation, tension/
compression nonlinear elements with initial gap, load case
combination, linear large deflection analysis, and full output
report and plotting capabilities. The package also contains
the multi-core analysis capability, allowing the user to
conduct multiple analysis of the same type in parallel,
saving hours of runtime.
Offshore Structure Advanced:
The Professional Static Topsides package contains capabilities
required for typical topside and deck analysis. It includes the
interactive graphics modeler with advanced 3D capabilities,
SACS IV solver and interactive graphics post-processor,
Topsides Loading, Combine, Gap, Tow, and LDF large deflection.
The package also includes automatic model generation, beam
and finite element capability, steel code check and redesign,
wind and gravity load generation, inertia and moving load
generation, tension/compression nonlinear elements with initial
gap, load case combination, linear large deflection analysis,
and full output report and plotting capabilities.
Offshore Structure:
The Professional Static Analysis package contains capabilities
required for static structural analysis. It includes the interactive
graphics modeler with advanced 3D capabilities, SACS IV solver
and interactive graphics post-processor, Combine, Gap, Tow,
and LDF large deflection. The package also includes automatic
model generation, beam and finite element capability, steel
code check and redesign, inertia and moving load generation,
tension/compression nonlinear elements with initial gap, load
case combination, linear large deflection analysis, and full
output report and plotting capabilities.
Key Components
Modeling
• Precede Graphical Modeler
• Datagen Intelligent Editor
• FEMGV Mesher
• Gap Elements
• Superelements
• Hull Modeling
Loads
• Seastate Wave, Wind, Current
• Buoyancy, Mud flow
• Gravity, Inertial
• Skid, Moving
Analysis
• SACS IV Solver
• Large Deflection (LDF)
• PSI Pile/Structure Analysis
• Wind Turbine Analysis
• Dynpac Modal Analysis
• Collapse
• Tow, Launch, and Flotation
• Motions and Stability
Design
• Combine Solution Files
• Post Offshore Code Design
• Concrete design
• Postvue Graphical Redesign
• Joint Can
• Interactive Fatigue
• Dynamic Fatigue
• Wave Fatigue
SACS is an integrated finite element structural analysis suite of applications that uniquely provides for the
design, fabrication, installation, operations, and maintenance of offshore structures, including oil platforms
and wind farms. Nearly 40 years of focus on these specialized requirements have made SACS the analysis
mainstay for most of the world’s offshore engineers. Virtually all of the world’s energy companies specify
SACS software for use by their engineering firms across the lifecycle of offshore platforms. Three options
of the SACS software suites are available: Offshore Structure Enterprise for comprehensive capabilities
required for typical offshore jackets, wharfs, and dolphin structures; Offshore Structure Advanced for
static topside and deck analysis; and Offshore Structure for static structural analysis.
SACS AnALySiS PACKAgES
Pile Structure Design:
Soil/Pile/Structure interaction Analysis
This non-linear add-on package permits non-linear soil/pile/
structure interaction analysis of fixed offshore structures with
multiple fixed supports using the PSI program modules. It requires
the use of the Offshore Structure, Offshore Structure Advanced, or
Offshore Structure Enterprise package.
Collapse:
Plastic non-Linear Add-On
This add-on package performs advanced plastic analysis including
pushover, ship impact, and blast non-linear analysis. It requires the use
of the Offshore Structure, Offshore Structure Advanced, or Offshore
Structure Enterprise package.
Fatigue Advanced – Dynamic Response:
Dynamic Fatigue Package
This Advanced Dynamic Fatigue package contains the modules
required to determine the fatigue damage of a dynamic system. This
package contains DYNPAC, Fatigue, Interactive Fatigue, and Dynamic
Response. It requires the use of the Offshore Structure, Offshore
Structure Advanced, or Offshore Structure Enterprise package.
Fatigue Advanced – Wave Response:
Dynamic Fatigue Package
This Advanced Dynamic Fatigue package contains the modules
required to determine the fatigue damage of a dynamic system.
This package contains DYNPAC, Fatigue, Interactive Fatigue, and
Wave Response. It requires the use of the Offshore Structure,
Offshore Structure Advanced, or Offshore Structure
Enterprise package.
Fatigue Enterprise:
Advanced Dynamic Fatigue Package
This Advanced Dynamic Fatigue package contains the modules
required to perform any dynamic deterministic, time history, or
spectral fatigue analysis. This package contains DYNPAC, Fatigue,
Interactive Fatigue, Dynamic Response, and Wave Response. It
requires the use of the Offshore Structure, Offshore Structure
Advanced, or Offshore Structure Enterprise package.
Wind:
Wind Turbine Package
The Wind Turbine package is comprised of the following packages
necessary for wind turbine platform design: Offshore Structure
Enterprise, Pile Structure Design, Collapse, and Fatigue Enterprise.
The package also contains the SACS interfaces to the GH Bladed and
FAST wind turbine aero-elastic modules. Full automation including
multi-core analysis capability is included for efficient analysis of a
large number of time history simulations.
Marine:
Marine installation Add-On
The Marine Installation Add-on package permits launch and upending
analysis. The package includes the Launch and Flotation program
modules, and requires the use of the Offshore Structure, Offshore
Structure Advanced, or Offshore Structure Enterprise package.
Marine Enterprise:
Hull Modeling, Motions, and Stability Analysis
The Marine Enterprise Add-on provides modeling of vessel hulls,
calculation of stability, and prediction of vessel motions. It can be
used for new or existing FPSO studies, as well as for transportation
and installation analysis. It links with the Tow module for calculation
of motions induced loads and downstream code checking and fatigue
calculations. The package contains the Hull Modeler, Motions, and
Stability modules, and requires the use of the Offshore Structure,
Offshore Structure Advanced, or Offshore Structure Enterprise package.
Ship Impact Analysis
Motions prediction on a drill ship
Parametric Study for the Fatigue Design of a Wind Turbine
Transition Piece
The following add-on modules extend the functionality of any of the three Offshore Structure suites.
SACS AnALySiS PACKAgES
SACS® Executive:
Common interface to Program Suite
• Controls and connects all elements of the SACS system
• Launches all SACS interactive programs
• Executes all batch program analyses
• Allows access to all SACS system configuration settings,
including system file location and security key settings
• Includes command line help and power buttons for the most
commonly executed tasks
• Specifies analysis options without changing data input file
Precede:
interactive Full Screen graphics Modeler
• Model generation capabilities include geometry, material
and section properties, and loading
• Automatic input error detection
• Maintains data backup
• Beam and/or finite element modeling including plate
and shell elements
• Automatic offshore jacket and deck generation
• User defined input units
• Cartesian, cylindrical, or spherical mesh generation
• Automatic weight or load generation including gravity, pressure,
and skid mounted equipment loads
• Seastate data generation capabilities
• Extensive plotting and reporting capabilities
• Code check parameter generation including K-factors and
compression flange unbraced lengths
• Allows SACS model files to be converted into 3D SAT file format
compatible with AutoCAD, CADKey, and TurboCAD
• Physical member support capabilities
• Professional and other ACIS-enabled CAD packages
• Supports full 3D geometry and section properties
• Allows SACS model files to be ported directly to a PDMS macro
file, which creates the 3D model in PDMS
• Supports PDMS section libraries in addition to creating PDMS
sections for sections defined in the SACS model
• Logging functionality
Data generator:
interactive Data generation for all Programs
Prevue/Chartvue: Interactive Plot View Utility
• Full screen editor that labels and highlights data fields and
provides help for data input
• Form-filling data input available as well as full screen mode
• Automatic data checking
Seastate:
Environmental Loads generator
• Ability to view plot files on screen
• Sends viewed plots to printer/plotter
• Supports HP-GL, Postscript, DXF, Windows devices
• Metafile (WMF), and SACS NPF plot file
• Allows plot size, character size, margins, formats, etc.
• Ability to modify chart settings
• Full implementation of API 21st edition
• Supports five wave theories
• Current included or excluded
• Generates load due to wind, gravity, buoyancy, and mud flow
SACS has applications for all types of offshore structures & vessels
Offshore System Types
1. Fixed Platforms
2. Compliant Tower
3. Tension Leg Platforms
4. Semi-Submersibles
5. FPSOs
The following software modules extend the functionality of any of the three Offshore Structure suites and are either
included within those packages or available as add-on modules. Please consult your Bentley representative for product
specifics relative to your needs.
SACS AnALySiS PACKAgES
• Marine growth, flooded, and non-flooded members
• RAO and acceleration loading including non-structural weights
• Moving loads generation
• Diameter, Reynolds number, and wake encounter effects
dependent drag and inertia coefficients
• Weight load cases
• Forces on non-structural bodies
• Deterministic and random wave modeling for dynamic response
• Member hydrodynamic modeling for static and dynamic analysis
SACS iV Solver:
Static Beam and Finite Element Analysis
• Beam elements including tubulars, tees, wide flanges,
channels, angles, cones, plate and box girders, stiffened
cylinders, and boxes
• Solid and plate elements (isotropic and stiffened)
• Discrete Kirchoff Theory (DKT) thin-plates
• Isoparametric 6-, 8-, and 9-node shell elements
• Library of AISC, U.K., European, German, Chinese, and
Japanese cross sections, as well as user-defined libraries
• Member, plate and shell local and global offsets
• Beam and finite element thermal loads
• Elastic supports defined in global or reference joint
coordinate system
• Specified support joint displacements
• Unlimited load cases
• P-delta effects
• Master/slave DOF
Post:
Beam and Finite Element Code
Check and Redesign
• Beam and plate element code check and redesign
• API (including 21st edition), AISC, LRFD, Norsok, Eurocode 3,
Canadian, DNV, British Standards, and Danish DS449 code check
• Plate panel checks in accordance to DnV-RP-C201
• Creates updated model with redesigned elements
• Modify code check parameters
• Load combination capabilities
• Supports codes from 1977 to present
• Detailed and summary reports
• Hydrostatic collapse analysis
• Span (multi-member effects)
• ISO 19902
Joint Can:
Tubular Joint Code Check and Redesign
• Present and past codes including latest API 21st edition,
supplement 2, and LRFD, Norsok, DS449, and Canadian
• API earthquake and simplified fatigue analysis
• ISO 19902
• Connection strength (50 percent) check
• Overlapping joints analyzed
• Minimum and extreme seismic analysis
Postvue:
interactive graphics Post Processor
• Interactive member and tubular joint code check
and redesign, with the option to print code check details
for latest AISC, ASD and LRFD, API, ISO 19902 codes
• Display shear and bending moment diagrams
• Display deflected shapes for static and dynamic analyses
• Color plate stress contour plots
• Code check and redesign by individual or group
of elements
• Supports same codes as post module
• Extensive reporting and plotting capabilities
• Color-coded results and unity check plots
• Creates updated input model file for re-analysis
• Labels UC ratio, stresses, and internal forces
on elements
FEMgV:
general Purpose Finite Element Data Modeled
and Results Viewer
• Produced by Femsys Ltd.
• Generate complex finite element models
• Exchange model data with Precede
• Create meshes for ship hulls and semi-submersibles
• View post processor results in 3D
• View detailed results contours, vectors, deformed
shapes, graphs, and animations for plate, shell, and
solid finite elements
Automatic Joint Meshing
SACS AnALySiS PACKAgES
Concrete:
Reinforced Concrete Code Check
and Redesign
• Rectangular, Circular, Tee, and L cross sections
• Beam, bi-axial beam-column, slab, and wall elements supported
• Multiple reinforcement patterns can be specified
• Code check per ACI 318-89 (Revised 1992)
• Shear reinforcement check and redesign
• Reinforcement development length check
• Deflection and creep calculation
• Second order/P-delta analysis capabilities
Fatigue:
Fatigue Life Evaluation and Redesign
• Spectral, time history, and deterministic fatigue analysis
• Cyclic stress range calculation procedures include wave search,
curve fit, and interpolation
• SCF calculations recommended by API (including 21st ed.
supplements), HSE, DNV, DS449 and Norsok Codes
• Automatic redesign
• API (including 21st ed. supplements), AWS, HSE, and Norsok
thickness dependent recommended S-N curves
• Multiple run damage accumulation
• Pierson-Moskowitz, JONSWAP, Ochi-Hubble double peak,
simplified double peek, and user-defined spectra
• Automated or user-specified connection details
• Pile fatigue analysis
• Creates wave spectra from scatter diagram
• Uses Paris equation to predict crack growth rate due to
cyclic stresses
• Load path dependent joint classifications
• Includes wave spreading effects
• Reservoir (rain flow) cycle counting method
• ISO 19902
interactive Fatigue:
interactive Fatigue Life Evaluation
• Shows the 3D view of the connection and allows braces to be
selected with the mouse
• Reads connection defaults when joint and/or brace is/are
selected, thus eliminating the need to calculate and display
• SCFs before viewing capacity or modifying properties
• Recognizes all SCF and S-N options available in the batch program
• Allows SCF theory to be changed for any type connection, including
in-line connections and connections with user defined SCFs
• Reports have been expanded and reworked to make them
easier to read
• Reports and plots can be displayed on the screen and/or
saved to a file
• Automatic redesign
gap:
non-linear Analysis With One-way Elements
• Accurate simulation of load out or transportation analysis using
one-way elements
• Tension or compression gap elements with initial gap
• General non-linear elements
• Friction element
PSi:
non-linear Soil, Pile, and Structure interaction
• Beam column effects included
• Non-uniform piles
• P-Y and T-Z curves, axial adhesion and springs
• API P-Y, T-Z, skin friction and adhesion data generated from soil
properties per API
• API P-Y / T-Z Soil
• API Adhesion Soil
• User Defined P-Y / T-Z Soil
• User Defined Adhesion Soil
PSi:
SACS AnALySiS PACKAgES
• Full structural analysis and pile code check API, LRFD, Norsok,
HSE, DS449, Canadian, and DNV
• Offset P-Y & T-Z curves for mudslides
• Full plotting and graphical representation of soil data and results,
including stresses, P-Y, T-Z curves
Pile:
isolated 3D Pile Analysis
• Beam column and pile batter effects included
• Uses PSI soil data
• Optional pile head springs
• Specify force at or below pile head
• Specify pile head displacements
• Specified pile head forces or displacements
• Automatic generation of linear equivalent pile stubs for dynamic
or static analysis
• Same plotting and code check features as PSI
Superelement:
Automated Substructure Creation
and Application
• Unlimited number of superelements
• Up to 1,000 interface joints per superelement
• Translation and rotation of superelements
• User defined stiffness matrices
• Full stress recovery
• Superelements can contain other superelements
• Translation and rotation of superelements
Combine:
Common Solution File Utility
• Combines dynamic and static results from one or multiple
solution files
• Combines results from analyzes having different member,
plates, etc.
• Superimposes mode shapes
• “Worst-case” combination of dead loads with
earthquake response
• Determine extreme wave loads from input spectra
Large Deflection (LDF):
Large Deflection Analysis
• Iterative solution for geometric
• Solves plate membrane problems
• Accounts for P-delta effects nonlinearities
Collapse:
non-linear Collapse Analysis
• Linear and non-linear material behavior
• Non-linear springs
• Sequential load stacking capability
• Activate and deactivate elements
• Joint flexibility options
Non-linear Elasto-plastic Deformations
SACS AnALySiS PACKAgES
• Impact analysis with automatic unloading, built-in DnV ship
indentation curves and energy absorption functionality
• Load cases may contain loading and/or specified displacements
• Includes geometric nonlinearities
• Plastic members and finite elements
• Includes piles with non-linear soils and plasticity
• Plastic DKT plates
Dynpac:
Dynamic Characteristics
• Householder-Givens solution
• Guyan reduction of non-essential degrees of freedom
• Lumped or consistent structural mass generation
• Automatic virtual mass generation
• Complete seastate hydrodynamic modeling
• User input distributed and concentrated mass
• Non-structural weight modeling
• Full 6 DOF modes available for forced response analysis
Wave Response:
Dynamic Wave Response
• Deterministic and random waves
• Pierson-Moskowitz, Jonswap, Ochi-Hubble, and user wave spectra
• Harris, Von Karmon, and Kaimal wind spectra
• Fluid-structure relative velocity and acceleration accounted for
“Modal Acceleration” and non-linear fluid damping
• Closed form steady state response in the frequency domain
• Equivalent static load output for accurate stress recovery
• Zero crossing and RMS responses
• Time history analysis of wave and wind and time history load
• Buoyancy dynamic loads included
• Stress, internal load, base shear, and overturning moment
transfer function plots available
• Full coupling with Fatigue program
• Elastic dynamic response of floating structures including stingers
• Input and output Power Spectral Densities with
Probability Distributions
• Special features for wind turbine analysis
Dynamic Response:
general Dynamic Response and
Earthquake Analysis
• Frequency domain analysis
• Time history, response spectrum or PSD-based
driven input
• Time history and harmonic-force driven input
• SRSS, CQC and peak modal combinations
• API response spectra library and user input spectra
• Wind spectral loading capability
• Structural and fluid damping
• Vibration analy
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