Transcript Modeling Layered Composites the Simple Way

Modeling Layered Composites the Simple Way
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© 2011 ANSYS, Inc.
July 18, 2015
Composites offer
tremendous
weight savings,
increased
performance, and
design flexibility
for a wide range of
applications
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© 2011 ANSYS, Inc.
July 18, 2015
As a composites
user/manufacturer,
you want to limit
costly and time
consuming
prototypes
S.Riaz, E.S.Greenhalgh, M.S.P.Shaffer, A.Bismarck, "Conference proceeding on
Hierarchical carbon fibre reinforced Poly (vinylidine) difluoride composites" ECCM
14, Budapest, Hungary
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© 2011 ANSYS, Inc.
July 18, 2015
The simulation of
composites products
is challenging
because of a complex
setup due to the
many different
materials,
orientations and
plies layups as well
as specific failure
analysis
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© 2011 ANSYS, Inc.
July 18, 2015
You want to
efficiently and
accurately predict
how well the
finished product
will perform
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© 2011 ANSYS, Inc.
July 18, 2015
ANSYS solutions for composites let you
efficiently design complex composites
structures
Productivity from streamlined
workflows
Accurate understanding of the
performance of your design
Optimization of your design
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© 2011 ANSYS, Inc.
July 18, 2015
ANSYS solutions
provide an intuitive
workflow for the
setup of composites
models for
maximized
productivity
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© 2011 ANSYS, Inc.
July 18, 2015
ANSYS Solutions at Repower Systems AG
“The intuitive implementation of composite design
development in ANSYS Composite PrepPost brought out a
revolution in composite simulations. We are able to realize a
continuous design process from simulation results to
manufacturing including design modifications within the
development.“
Hendrik Mester, Rotor Blade
Development, REpower Systems AG
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© 2011 ANSYS, Inc.
July 18, 2015
3 steps to transform your CAD model in a
simulation model
Geometry cleaning
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© 2011 ANSYS, Inc.
July 18, 2015
Composites definition
Working conditions
Composites characteristics are defined on
the simulation model as you would on the
real parts
Single fabric
and predefined
stackups
definitions
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© 2011 ANSYS, Inc.
Plies locations are defined on the
geometry using fabrics or stackups
July 18, 2015
Thick composites or complex geometry
will benefit from 3D modeling
Automatic extrusion from the ply definition and snap
to a complex shape
Thick core imported from a CAD model
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© 2011 ANSYS, Inc.
July 18, 2015
Assembly modeling and coupling of multiple physics
enhance the fidelity of your simulation
Fluid-structure coupling to import pressure fields
Assembly of composites and
non-composites parts
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© 2011 ANSYS, Inc.
July 18, 2015
ANSYS solutions for
composites provide
all necessary results
to accurately
understand
performance of your
product
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© 2011 ANSYS, Inc.
July 18, 2015
Deformations and stresses are available
for the full model
tw(31) (0)
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© 2011 ANSYS, Inc.
July 18, 2015
First-ply failure analysis computed from
strengths estimates is the first indicator
of composites performance
tw(31) (0)
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Global estimates help locate critical areas
tw(31) (0)
tw(31) (0)
Local estimates help identify ply
location and reason for failure
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© 2011 ANSYS, Inc.
July 18, 2015
Additional information such as plybooks
including weight and price estimates is
also available
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© 2011 ANSYS, Inc.
July 18, 2015
To further improve your design, you could investigate
advanced failure modes such as crack propagation,
progressive damage or drop-test analysis
Crack
propagation
Initial crack
Debonding of a composite structure
Start of damage (layer 1)
Progressed damage (layer 1)
Progressed damage (layer 3)
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© 2011 ANSYS, Inc.
July 18, 2015
ANSYS solutions will
allow a faster and
less expensive design
of lighter and more
robust products
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© 2011 ANSYS, Inc.
July 18, 2015
Save your engineers time with efficient
workflows and let them focus on understanding
the design
Composites definition
Geometry cleaning
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© 2011 ANSYS, Inc.
July 18, 2015
Failure analysis
Working conditions
Optimize your product by performing as many
virtual design variations as you need before
creating the first physical prototype
Change the value of
any dimension then
update the entire
model automatically
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© 2011 ANSYS, Inc.
July 18, 2015
Create response surfaces for
optimization
Optimize the composites layout using scripts to
modify ply sequences, materials…
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© 2011 ANSYS, Inc.
July 18, 2015
ANSYS solutions for composites let you
efficiently design complex composites
structures
Productivity from streamlined
workflows
Accurate understanding of the
performance of your design
Optimization of your design
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© 2011 ANSYS, Inc.
July 18, 2015