ANSYS structural and offshore solutions for the ... · offshore solutions for the...
Transcript of ANSYS structural and offshore solutions for the ... · offshore solutions for the...
ANSYS structural and ANSYS structural and offshore solutions for the offshore solutions for the renewablesrenewables and marine and marine
sectorssectors
ANSYS structural and ANSYS structural and offshore solutions for the offshore solutions for the renewablesrenewables and marine and marine
sectorssectors
© 2010 ANSYS, Inc. All rights reserved. 1 ANSYS, Inc. Proprietary© 2010 ANSYS, Inc. All rights reserved. 1 ANSYS, Inc. Proprietary
Joe Joe LuxmooreLuxmooreTechnical ServicesTechnical Services
ANSYSANSYS UK LtdUK Ltd
Joe Joe LuxmooreLuxmooreTechnical ServicesTechnical Services
ANSYSANSYS UK LtdUK Ltd
Contents
• ANSYS structural products
• ANSYS AQWA hydrodynamics
• ANSYS composites solutions
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ANSYS Mechanical Products
• Scalable mechanical
solutions for stress
and vibration
– ANSYS DesignSpace
– ANSYS Professional
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– ANSYS Professional
– ANSYS Structural
– ANSYS Mechanical One interface, one solver – different
feature levels
ANSYS Mechanical Capabilities
• Static analysis
– Nonlinear geometric
– Nonlinear material
– Nonlinear contact
• Dynamic analysis
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• Dynamic analysis
– Modal, harmonic
response, random
vibration, rotor dynamics,
and nonlinear transient
ANSYS ASAS
• Offshore Structural FE Analysis
• Coupled wave/current/wind-structure interaction with nonlinear
structural response
• Fatigue assessment with irregular waves and using deterministic and
spectral methods
• For more than 30 years, ASAS has been successfully used for
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• For more than 30 years, ASAS has been successfully used for
analyzing a large variety of offshore structures subjected to wave,
current and wind loading
– More than half of all North Sea jacket structures have been
designed with the aid of ASAS
• CAE requirements for other offshore structures are very similar!
ANSYS ASAS applications
• Offshore Structures– Fixed
• Steel Jackets
• Concrete
– Compliant
• Jack-ups
– Floating
Images courtesy of Arup, Moss Maritime AS, Technip Offshore Finland and REpower Systems AG
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– Floating• FPSOs
• SPARS
• Semi-Submersibles
• Tension Leg Platforms
– Risers
– Offshore Wind Turbines
• Harbours
• Ships– Design
– Offloading
ANSYS ASAS applications
• Some example applications
Courtesy of Fraunhofer CWMT
Offshore Wind Turbines
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Courtesy of REpower Systems AG
Jacket Structures
Transportation of Spar Truss on Heavy Lift VesselCourtesy of Technip Offshore Finland
Tidal Turbine Structure
ANSYS ASAS roadmap
• ASAS to Mechanical
– Beam Modeling
– Wave theories
– Soil-Pile-Structure Interaction
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• Design Assessment
– New Design Assessment system in
Mechanical
– Additional code checking products
ANSYS AQWA
• Comprehensive Hydrodynamic capabilities
– Diffraction/Radiation including Morison elements
– Frequency Domain analysis
– Stability including mooring lines
– Time domain with irregular waves
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– Time domain with non-linear survival waves
– Coupled Cable Dynamics
– Multiple hydrodynamic interaction and articulations (up to
50 structures)
– Transfer of motions and Pressures to ASAS & ANSYS
FE models
ANSYS AQWA
• Some example applications
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Shielding
Vessel Loading Transfer from
AQWA to MechanicalCourtesy of Vuyk Engineering Rotterdam
FPSO & TLP Concept Offloading Operation Courtesy of SBMJacket Launch Courtesy of Gusto MSC
Development and Validation
of Octabuoy Concept
Courtesy of Moss Maritime AS
AQWA in Workbench
• Initial implementation at 12.1 of Hydrodynamic
Diffraction system
• Hydrodynamic Time Response introduced for 13.0
• Time history analysis of bodies, subject to environmental
forces including mooring lines
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AQWA in Workbench
• Cable connections for rigid
body motion, wave and
mooring line analysis under
various ocean environments
• Ocean Environment Definition
for Wind, Wave and Current
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for Wind, Wave and Current
• Additional Structure Force
Time History
• Cable Winching and Failures
• Input of catenary mooring
lines
• Realistic viewing of mooring
lines
ANSYS Composite Analysis
• ANSYS Mechanical
– Element and material
technology
• ANSYS Composite
Prep/Post (ACP)
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Prep/Post (ACP)
ANSYS Mechanical
• Composite capabilities
– Composite section
tools, and interfaces to
third-party data
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– Structural and thermal
finite elements
– Extensive library of
nonlinear material
models
ANSYS Mechanical
• Composite element types
Layered Solid
Shell
Beam/Pipe/Elbow
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Solid-Shell Discrete/Smeared
Reinforcement
ACP Workflow
• ANSYS Mechanical
– Geometry interface
– FEA solver
• ANSYS Composite
PrepPost
CAD Model
ANSYS Geometric
changes
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PrepPost
– Iterations for
material, orientations
and ply definitions
ANSYS
Mechanical
ANSYS
Composite
PrepPost
changes
required
Iterations for material,
orientation, and ply
definitions
Mesh, loads, BC’s
Base modeling
• The ANSYS Composite
PrepPost allows to define the
composite properties for an
existing surface model.
• The model including mesh,
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• The model including mesh,
loads and boundary
conditions can be defined in
ANSYS Mechanical or in
ANSYS Mechanical APDL.
• ANSYS Mechanical provides
a menu to interact with
ANSYS Composite PrepPost.
Laminate modeling
• A hierarchical data description of materials, stackups and laminates
Base information:
Engineering data and material limits
Fabrics
Stackups
Add thickness,
pricing and draping
information
Stack fabrics, add
pricing and draping
information
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Laminates
Define final
laminate
product
Material data can be imported from external sources (ESACOMP9)
Defining laminate areas
• Laminates are defined on
zones (element groups), as
well as orientations
• Zones can be applied a pre-
defined laminate
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• Additional Laminates can be
constructed by progressive
stacking on zones
• Support for layer drop-off
• Easy generation of solid model
based on shell model
Easy-to-use yet advanced
definition of orientations
• Cartesian, cylindrical and spherical
coordinate systems as basis for
definition of material reference
direction
• Concept of oriented element-sets to
align different material zones
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General post-processing
• Arbitrarily configurable
envelope contour failure
plots
• Overlay Text-plots for
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• Overlay Text-plots for
easy identification of the
relevant failure-modes
• Generate superposition
load cases based on
initial load cases
Failure Analysis
• ANSYS Composite PrepPost provides a unique
set of failure criteria to analyze the product:
– From simple criteria (max stress) to state-of-
the art analysis (Puck criterion)
– Interlaminar shear, normal stresses for shells
– Through thickness failure for shells
– Combination of failure criteria provides failure
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–
envelope
– 3D implementation of main criteria (Tsai-Hill,
Hashin, Puck etc.)
– Ability to create user-defined criteria
• Results can be displayed as:
– Most critical failure criteria
– Critical layer
– Reserve, inversed reserve factors and safety
margin (based on stress limits)
– Standard results (stressesB.) per layer
Draping and flat-wrap
• ANSYS Composite
PrepPost provides draping
functionality to analyze for
drapability as well as for
calculation of the fiber-
angle correction
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angle correction
• Further ANSYS Composite
PrepPost can also provide
the flat-wrap of plies with
their distortion
Flat-wrap
Draping
Plybook generation
• A set of plies or
all plies are
selected for ply-
book
generation.
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generation.
Additional capabilities
• Python scripting capabilities provide full
automation for the setup of the composite
models.
Automated update of full model following a
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• Automated update of full model following a
design change.
Summary
• ANSYS’ bespoke offshore products and
general purpose FEA offer a well proven
solution for structural design in the
renewables and marine sectors
• ANSYS’ composite solutions provide a user-
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• ANSYS’ composite solutions provide a user-
friendly and efficient method for the
assessment of complex composite
structures, traditionally a very challenging
area for FEA