Simulation in Design - Dive into ANSYS simulation

1. Simulation by Design
Dive into ANSYS simulation
Mike Slack
1 © 2011 ANSYS, Inc. October 10, 2011

2. Question  Simulation  Insight
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3. Complicated Geometries
• Physiological geometry
• Complex STL geometries derived from
MRI scans
• Combine with devices
3 © 2011 ANSYS, Inc. October 10, 2011

4. Cut Cell Techniques
A slice through a human nasal cavity meshed using the cut cell meshing
approach. Local refinement based on proximity and curvature.
4 © 2011 ANSYS, Inc. October 10, 2011

5. Respiratory modelling & devices
6 © 2011 ANSYS, Inc. October 10, 2011

6. Extended Airways
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7. Dry Powder Inhaler
Fine drug particles are
attached to larger
carrier particles.
Large particles are
easier to mobilise and
store.
Animation showing the
mobilisation of
Courtesy of Sanofi-Aventis – Joint presentation at Respiratory Drug particles during patient
Delivery conference (2008) inhalation
8 © 2011 ANSYS, Inc. October 10, 2011

8. Detachment forces
10.0%
Red means
Detachment
detachment occurs
8.0% point
.
6.0%
Distribution function
4.0%
2.0%
0.0%
1.E-04 1.E-03 1.E-02 1.E-01 1.E+00 1.E+01 1.E+02
Maximum moment experienced / Maximum withstandable moment
.
 at
Vimp By predicting the forces exerted by the carrier on the
Carrier an attached particles this technology allows binary drug
Ff R systems to be tailored to suit the delivery technology.
Wall
N Courtesy of Sanofi-Aventis – Joint presentation at
9 © 2011 ANSYS, Inc. October 10, 2011
Respiratory Drug Delivery conference (2008)

9. Ventilation in Medical Equipment
Respiration process under the oxygen hood within the
infant incubator
10 © 2011 ANSYS, Inc. October 10, 2011

10. Ventilation in Medical Equipment
Path lines coloured with temperature
inside the heater chamber
Schematic graph of the incubator
Velocity profile on the fan outlet components
11 © 2011 ANSYS, Inc. October 10, 2011

11. Fabrics and textile design
12 © 2011 ANSYS, Inc. October 10, 2011

12. Joint prosthetic understanding and design
Sliding distance for osteo-integration Von Mises stress in the prosthesis
Trabecular tensile and compressive strain
13 © 2011 ANSYS, Inc. October 10, 2011

13. Manufacturing processes
Extrusion multilumen
tubes
Blow molding
Stress distribution in pharmaceutical
packaging
14 © 2011 ANSYS, Inc. October 10, 2011

14. Spine Modelling
Scan geometery provided
Courtesy of Materialise
15 © 2011 ANSYS, Inc. October 10, 2011

15. Stent Artery configuration
Structural results
Drug eluting
Wall diffusion
Maximum principal stress distribution
16 © 2011 ANSYS, Inc. October 10, 2011

16. Modelling flow into porous dressings
• Consumer products – diapers, napkins, feminine hygiene, stain
removal and wound dressings
Rayon fibers used in
textile industry
Woven scaffold
17 © 2011 ANSYS, Inc. October 10, 2011

17. Evaluating the flow of liquid into two
different woven materials
These animations show liquid spreading in a (nonwoven) porous
pad with different resistances in different locations.
18 © 2011 ANSYS, Inc. October 10, 2011

18. 19 © 2011 ANSYS, Inc. October 10, 2011

19. With
Without
Flight
Flight sock sock
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20. Summary
Simulation fits many different questions and scales
A broad range of physics are available in the tool box
Value of insight = designed with confidence
21 © 2011 ANSYS, Inc. October 10, 2011