View
16
Download
0
Category
Preview:
Citation preview
3DS
.CO
M/S
IMU
LIA
© D
assa
ult S
ystè
mes
| C
onfid
entia
l Inf
orm
atio
n | 1
0/8/
2012
| re
f.: 3
DS
_Doc
umen
t_20
12
1
3DS
.CO
M ©
Das
saul
t Sys
tèm
es |
Con
fiden
tial I
nfor
mat
ion
| 10
/8/2
012
| ref
.: 3D
S_D
ocum
ent_
2012
Multiphysics in Abaqus 6.12
Discover New Simulation Possibilities
3DS
.CO
M/S
IMU
LIA
© D
assa
ult S
ystè
mes
| C
onfid
entia
l Inf
orm
atio
n | 1
0/8/
2012
| re
f.: 3
DS
_Doc
umen
t_20
12
2
Contents
Structural Mechanics
Electromagnetics
Computational Fluid Dynamics
Co-Simulation Engine
Example
Conclusion
3DS
.CO
M/S
IMU
LIA
© D
assa
ult S
ystè
mes
| C
onfid
entia
l Inf
orm
atio
n | 1
0/8/
2012
| re
f.: 3
DS
_Doc
umen
t_20
12
3
3DS
.CO
M ©
Das
saul
t Sys
tèm
es |
Con
fiden
tial I
nfor
mat
ion
| 10
/8/2
012
| ref
.: 3D
S_D
ocum
ent_
2012
Structural Mechanics
3DS
.CO
M/S
IMU
LIA
© D
assa
ult S
ystè
mes
| C
onfid
entia
l Inf
orm
atio
n | 1
0/8/
2012
| re
f.: 3
DS
_Doc
umen
t_20
12
4
Edge-Surface Contact
Edge-surface contact is now activated by
default in Standard
Shell perimeter edges and feature edges
Increases contact robustness “out-of-the box”
Snap fit example
Abaqus 6.11
• Requires hundreds of increments with
supplementary node-surface contact pair
Abaqus 6.12:
• Completes in only 29 increments
3DS
.CO
M/S
IMU
LIA
© D
assa
ult S
ystè
mes
| C
onfid
entia
l Inf
orm
atio
n | 1
0/8/
2012
| re
f.: 3
DS
_Doc
umen
t_20
12
5
Surface Smoothing Enhancements
Surface smoothing is now available in Explicit
Previously available in Standard for spherical and
cylindrical geometry
Toroidal smoothing introduced in both Standard &
Explicit
No smooth Smoothed
3DS
.CO
M/S
IMU
LIA
© D
assa
ult S
ystè
mes
| C
onfid
entia
l Inf
orm
atio
n | 1
0/8/
2012
| re
f.: 3
DS
_Doc
umen
t_20
12
6
Thermal Interaction with CEL
Extended CEL to thermal stress simulation
with contact interactions
Complements thermal stress element introduced
in Abaqus 6.11
Applications include forging, mold filling,
manufacturing processes, …
Hot forging
3DS
.CO
M/S
IMU
LIA
© D
assa
ult S
ystè
mes
| C
onfid
entia
l Inf
orm
atio
n | 1
0/8/
2012
| re
f.: 3
DS
_Doc
umen
t_20
12
7
SPH Enhancements
Automatic conversion from conventional elements to SPH particles
Criteria includes time, stress, strain, user
Greatly simplifies SPH modeling
Ballistic impact examples
3DS
.CO
M/S
IMU
LIA
© D
assa
ult S
ystè
mes
| C
onfid
entia
l Inf
orm
atio
n | 1
0/8/
2012
| re
f.: 3
DS
_Doc
umen
t_20
12
8
More accurately capture the time-dependent
behavior of materials such as polymers and rubber
Based on parallel-network approach
Available in Standard for 3D continuum elements
with isotropic behavior
Nonlinear Viscoelasticity
3DS
.CO
M/S
IMU
LIA
© D
assa
ult S
ystè
mes
| C
onfid
entia
l Inf
orm
atio
n | 1
0/8/
2012
| re
f.: 3
DS
_Doc
umen
t_20
12
9
Adaptive Mesh Refinement for CEL
Automatic single-level refinement of Eulerian elements
Provides improved accuracy and
performance
Refinement criteria include material
boundary, contact, plastic strain,
and density
3DS
.CO
M/S
IMU
LIA
© D
assa
ult S
ystè
mes
| C
onfid
entia
l Inf
orm
atio
n | 1
0/8/
2012
| re
f.: 3
DS
_Doc
umen
t_20
12
10
Fracture Mechanics
XFEM
Support for axisymmetric elements
Performance improvements
VCCT
Unstable crack growth performance improved
Composites with large ductile fracture
resistance
0
20
40
60
80
100
120
Multiple node release
One node release
Tim
e (
in s
ec
on
ds
)
Single vs. multiple node release
3DS
.CO
M/S
IMU
LIA
© D
assa
ult S
ystè
mes
| C
onfid
entia
l Inf
orm
atio
n | 1
0/8/
2012
| re
f.: 3
DS
_Doc
umen
t_20
12
11
GPU Acceleration of Direct Sparse Solver
GPU acceleration now works with
DMP and multiple GPUs
Limited to SMP and single GPU in
Abaqus 6.11
Further improved performance for
large problems where equation
solver dominates
1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
1.5 1.5 3.0 3.4 3.8
Sp
ee
d u
p v
s.
CP
U o
nly
Number of Equations (millions)
Abaqus 6.12 Multi GPU Execution 24 core 2 host, 48 GB memory per host
1 GPU/Host
2 GPUS/Host
3DS
.CO
M/S
IMU
LIA
© D
assa
ult S
ystè
mes
| C
onfid
entia
l Inf
orm
atio
n | 1
0/8/
2012
| re
f.: 3
DS
_Doc
umen
t_20
12
12
Input File Processing Performance
Expectations for Abaqus 6.12
1.2 minute per million DOF
0.35 GB per million DOF
Initial DMP of batch Pre
Targeting memory reductions
0
50
100
150
0 60 120 180
Ba
tch
Pre
wa
ll t
ime
(m
inu
tes
)
Millions of DOF
Abaqus 6.10EF
Abaqus 6.11
Abaqus 6.12
3DS
.CO
M/S
IMU
LIA
© D
assa
ult S
ystè
mes
| C
onfid
entia
l Inf
orm
atio
n | 1
0/8/
2012
| re
f.: 3
DS
_Doc
umen
t_20
12
13
0.0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
16.0
18.0
Abaqus 6.11 (Only Full Recovery available)
Abaqus 6.12 (Full Recovery)
Abaqus 6.12 (Selective Recovery)
3.95 3.85 1.70
13.61
0.07
0.05
Wal
l-Ti
me
(h
rs.)
Frequency Substructure Generate
AMS-based Substructure Generation
~10x
13M DOF powertrain model with 15kHz
maximum frequency—substructure size 2143
(1188 retained DOFs + 955 eigenmodes)
Novel substructure generation algorithm
provides significant performance gains
3DS
.CO
M/S
IMU
LIA
© D
assa
ult S
ystè
mes
| C
onfid
entia
l Inf
orm
atio
n | 1
0/8/
2012
| re
f.: 3
DS
_Doc
umen
t_20
12
14
3DS
.CO
M ©
Das
saul
t Sys
tèm
es |
Con
fiden
tial I
nfor
mat
ion
| 10
/8/2
012
| ref
.: 3D
S_D
ocum
ent_
2012
Electromagnetics
3DS
.CO
M/S
IMU
LIA
© D
assa
ult S
ystè
mes
| C
onfid
entia
l Inf
orm
atio
n | 1
0/8/
2012
| re
f.: 3
DS
_Doc
umen
t_20
12
15
Review
SCC 2011 Abaqus 6.11
3DS
.CO
M/S
IMU
LIA
© D
assa
ult S
ystè
mes
| C
onfid
entia
l Inf
orm
atio
n | 1
0/8/
2012
| re
f.: 3
DS
_Doc
umen
t_20
12
16
Magnetostatic Procedure
Solves for magnetic field produced by
direct current
Applications include actuators, magnetic
inspection, and magnetostriction TEAM 13 Benchmark
Coil with DC
Plate Channels
Symmetry
plane
Magnetic field in air Flux density in channels and plate
3DS
.CO
M/S
IMU
LIA
© D
assa
ult S
ystè
mes
| C
onfid
entia
l Inf
orm
atio
n | 1
0/8/
2012
| re
f.: 3
DS
_Doc
umen
t_20
12
17
Transient Low-Frequency Procedure
Solves for magnetic and electric fields produced by
time varying current
Applications include EM forming, transformers,
nondestructive examination
Magnetic pulse forming Induced current
density
Force density
Coil with
current Aluminum
tube
Electromagnetic analysis 1
Map
forces
Structural analysis 2
Deformed tube
• EM force is sequentially
mapped onto structural mesh
• 1/8th symmetry
• Decaying AC current
• Rate-dependent plasticity PEEQ
3DS
.CO
M/S
IMU
LIA
© D
assa
ult S
ystè
mes
| C
onfid
entia
l Inf
orm
atio
n | 1
0/8/
2012
| re
f.: 3
DS
_Doc
umen
t_20
12
18
Abaqus 6.11
(linear)
Magnetic Material Behavior
Nonlinear B–H curve can capture saturation
Suitable for “soft” magnetic materials
Response can be isotropic or orthotropic
Applications include electromagnets and
transformers
Flux Density B
Magnetic Field
H
Saturation
Abaqus 6.12
(nonlinear)
Without saturation With saturation
Max EMB:
2.44
Max EMB:
1.84
3DS
.CO
M/S
IMU
LIA
© D
assa
ult S
ystè
mes
| C
onfid
entia
l Inf
orm
atio
n | 1
0/8/
2012
| re
f.: 3
DS
_Doc
umen
t_20
12
19
Performance
All electromagnetic procedures now
support DMP parallel processing
TEAM 13 Benchmark • 106,570 DOF
• Intel 2.67GHz, 8 cores, 48 GB
3.3× faster
on 4 cores
3DS
.CO
M/S
IMU
LIA
© D
assa
ult S
ystè
mes
| C
onfid
entia
l Inf
orm
atio
n | 1
0/8/
2012
| re
f.: 3
DS
_Doc
umen
t_20
12
20
3DS
.CO
M ©
Das
saul
t Sys
tèm
es |
Con
fiden
tial I
nfor
mat
ion
| 10
/8/2
012
| ref
.: 3D
S_D
ocum
ent_
2012
Computational Fluid Dynamics
3DS
.CO
M/S
IMU
LIA
© D
assa
ult S
ystè
mes
| C
onfid
entia
l Inf
orm
atio
n | 1
0/8/
2012
| re
f.: 3
DS
_Doc
umen
t_20
12
21
Review
SCC 2010 Abaqus 6.10
SCC 2011 Abaqus 6.11
3DS
.CO
M/S
IMU
LIA
© D
assa
ult S
ystè
mes
| C
onfid
entia
l Inf
orm
atio
n | 1
0/8/
2012
| re
f.: 3
DS
_Doc
umen
t_20
12
22
Implicit Advection
Implicit treatment of convective transport terms
Relaxes mesh-dependent CFL condition
March to steady state much faster
6.11 6.12
CFL 0.45 50
dt 8.8 × 10-6 9.8 × 10-4
increments 34,000 (est.) 340
wall time (min) 2,400 (est.) 46 min
35° Ahmed body
Cross-section of
hex-dominant 5
level mesh
• 1.6M elements, 16 cores
• Spalart-Almaras turbulence
• Experiment: Cd = 0.257
• Imp. adv.: Cd = 0.269
52× faster!
3DS
.CO
M/S
IMU
LIA
© D
assa
ult S
ystè
mes
| C
onfid
entia
l Inf
orm
atio
n | 1
0/8/
2012
| re
f.: 3
DS
_Doc
umen
t_20
12
23
Porous Media
Computationally efficient technique for
modeling flow through porous media
Based on Darcy-Brinkman-Forchheimer
equations
Isotropic permeability and heat transfer
Applications include packed beds, filters,
tube banks, etc.
Inlet Outlet
Porous media
Inlet
Outlet
Substrate
Pressure
Filter
3DS
.CO
M/S
IMU
LIA
© D
assa
ult S
ystè
mes
| C
onfid
entia
l Inf
orm
atio
n | 1
0/8/
2012
| re
f.: 3
DS
_Doc
umen
t_20
12
24
Porous Media Example
Velocity
Porous media
diffuses inflow
Copper conducts
heat across throat
Temperature
Cold air
Hot air Copper diffuser 85% porosity
Venturi with porous diffuser
Free inflow With diffuser
3DS
.CO
M/S
IMU
LIA
© D
assa
ult S
ystè
mes
| C
onfid
entia
l Inf
orm
atio
n | 1
0/8/
2012
| re
f.: 3
DS
_Doc
umen
t_20
12
25
Additional Enhancements
Non-Newtonian Viscosity
Model shear behavior of fluids such as
blood, paint, slurries, molten polymers, etc.
A variety of popular models are available
User-defined subroutines
Element face pressure and velocity
Written using C programming language
Surface Name: “inlet”
vx : User specified
Blood flow through
an aortic aneurism
3DS
.CO
M/S
IMU
LIA
© D
assa
ult S
ystè
mes
| C
onfid
entia
l Inf
orm
atio
n | 1
0/8/
2012
| re
f.: 3
DS
_Doc
umen
t_20
12
26
Turbulence Modeling
Existing turbulence models include:
RANS: Spalart-Allmaras, RNG k-e
LES: Implicit Large Eddy Simulation
Work-in-progress for a future release
Detached Eddy Simulation (DES)
captures individual eddies
Spalart-Allmaras
DES
3DS
.CO
M/S
IMU
LIA
© D
assa
ult S
ystè
mes
| C
onfid
entia
l Inf
orm
atio
n | 1
0/8/
2012
| re
f.: 3
DS
_Doc
umen
t_20
12
27
3DS
.CO
M ©
Das
saul
t Sys
tèm
es |
Con
fiden
tial I
nfor
mat
ion
| 10
/8/2
012
| ref
.: 3D
S_D
ocum
ent_
2012
Co-Simulation Engine
3DS
.CO
M/S
IMU
LIA
© D
assa
ult S
ystè
mes
| C
onfid
entia
l Inf
orm
atio
n | 1
0/8/
2012
| re
f.: 3
DS
_Doc
umen
t_20
12
28
Software technology that enables
run-time coupling between multiple
solvers
Used by SIMULIA and partners for
several years
Co-simulation API is now available to
end-users
Abaqus/Standard and CFD
Co-Simulation Engine (CSE)
Abaqus/Standard and
Abaqus/Explicit Abaqus/Standard and
STAR-CCM+
3DS
.CO
M/S
IMU
LIA
© D
assa
ult S
ystè
mes
| C
onfid
entia
l Inf
orm
atio
n | 1
0/8/
2012
| re
f.: 3
DS
_Doc
umen
t_20
12
29
3DS
.CO
M ©
Das
saul
t Sys
tèm
es |
Con
fiden
tial I
nfor
mat
ion
| 10
/8/2
012
| ref
.: 3D
S_D
ocum
ent_
2012
Bringing it all together Solenoid Valve Example
3DS
.CO
M/S
IMU
LIA
© D
assa
ult S
ystè
mes
| C
onfid
entia
l Inf
orm
atio
n | 1
0/8/
2012
| re
f.: 3
DS
_Doc
umen
t_20
12
30
Solenoid Valve Example Problem Description
Solenoid valve schematic
Adapt a relatively inexpensive
solenoid for use in a precision
fluid metering application.
Plunger
Valve Body
Spring
Lead Wires
Coil Windings Solenoid
Outlet Inlet
3DS
.CO
M/S
IMU
LIA
© D
assa
ult S
ystè
mes
| C
onfid
entia
l Inf
orm
atio
n | 1
0/8/
2012
| re
f.: 3
DS
_Doc
umen
t_20
12
31
Solenoid Valve Example Solution Approach
Fluid model
Structural model EM model
Magnetostatic Analysis
Sequence of jobs to obtain plunger force as
a function of location
FSI Analysis
Structural Dynamics Incompressible CFD
High Reynolds number flow
with turbulence
Sensor/actuator applied to
plunger
1
2
3DS
.CO
M/S
IMU
LIA
© D
assa
ult S
ystè
mes
| C
onfid
entia
l Inf
orm
atio
n | 1
0/8/
2012
| re
f.: 3
DS
_Doc
umen
t_20
12
32
Solenoid Valve Example Results
Closed
Half open
Fully open
Magnetic force density in
the plunger
Velocity streamlines
3DS
.CO
M/S
IMU
LIA
© D
assa
ult S
ystè
mes
| C
onfid
entia
l Inf
orm
atio
n | 1
0/8/
2012
| re
f.: 3
DS
_Doc
umen
t_20
12
33
Conclusion
Abaqus 6.12 is the strongest release ever!
Structural mechanics
Electromagnetics
Computational fluid dynamics
Co-Simulation engine
Recommended