1. Simulation of Resin Transfer Molding and Vacuum Infusion
RTM-Worx
Simulation of
Resin Transfer Molding
and
Vacuum Infusion

2. Introduction to RTM-Worx
RTM Simulation technology has become more accessible than ever! We will give you an impression of the extensive capabilities of our simulation code: RTM-Worx.
This presentation will take 5 minutes
Use the mouse or cursor keys to navigate through the slides or speed up the presentation.

3. Flow Simulation with RTM-Worx
RTM-Worx simulates flow of the resin during filling. It calculates injection time, location of venting ports, shows air entrapments, race effects etc.
The simulation allows you to do a lot of trial injections in short time.
You need some information to do a simulation:
Geometry of the product and fabric lay-up
Viscosity of the resin (at injection temperature)
Fiber/volume fraction and permeability
Permeability can be measured by edge injection of a strip that has the same lay-up as the product.

4. Overview of RTM-Worx Advanced FEM Simulation
Integrated pre- and post processing
Hierarchical archiving system
Runs on PC, Windows 95/98/NT4
CPU time one minute (Pentium II 233 MHz)
Learning time less than one day
Unmatched performance / cost ratio

5. Building the Model Integrated geometry modeller
Imports DXF, STL and FEM meshes
Add properties to:
keypoints to define injection and venting ports
curves to define runner channels and easy flow paths (empty or UD strands)
surfaces to define thickness and reinforcement
Point-and-click interface
Variable units, automatic conversion

6. Geometry Editor Define corners and gates using keypoints
Connect keypoints with curves
Create surfaces by loops of curves

7. Reinforcement Properties
Peripheral injection channel
(no reinforcement)
Selected surface
Properties

8. Injection and Venting Ports
Injection ports
Venting port
Injection pressure
Flowrate
Open/close

9. Control Panel Tools for various tasks Dynamic rotation/zoom/pan
Defaults allow you to safely explore all possibilities
Tooltips provide help, valid ranges and error indication
Built-in calculator
Full keyboard support

10. Mesh Generation Each entity is automatically meshed
Graded mesh adapts triangle and edge size to the level of detail in the geometry
Element size can be controlled explicitly
View element quality to decide whether mesh is acceptable or needs (local) refinement
Generates over 2000 triangles/second

11. Mesh Generation Configurable bounds on mesh size
Buttons provide common settings

12. Filling Simulation
Accurate flow front tracking based on mass conservative FEM/CV method
Fast CG iterative solver with SGS preconditioning guarantees reliable results
Restart option continues calculation at any point, optionally with changed parameters
Use coarse meshes for quick results, fine meshes for accurate predictions

13. Progress of simulation
Calculation
Resin viscosity
Progress of simulation

14. Smart Postprocessing Save lots of results using less disk space
Walk through the filling sequence (animation)
Shaded and line contour plots
Vector plots of velocity and 2D permeability
Entirely integrated:
all display options always available
change model/properties and recalculate without need to switch between applications

15. Vectors (velocity, permeability)
View Results
Walk through filling sequence
Label geometry or mesh
Shaded contours
Line contours
Vectors (velocity, permeability)

16. Filling animation

17. Filling animation

18. Filling animation

19. Filling animation

20. Filling animation

21. Filling animation

22. Filling animation

23. Filling animation

24. Filling animation

25. Filling animation

26. Filling animation

27. Filling animation

28. Filling animation

29. Filling animation

30. Applications
Optimize part injection: location of injection and venting ports, filling time and pressure
Eliminate sensitivity to easy flow paths and variations in properties of fabric and resin
Quickly assess implications of design or material changes for existing products
Establish specifications for fabric, resin and preforming needed to ensure part quality

31. Plotting Capabilities
Combine shaded, line contour and vector plots to interpret results
Plot any combination of properties and simulation results

32. Example: Complex Part
Exploded view can be made with connector elements
Thickness multiplied by factor 3 to show differences more clearly
Use RTM-Worx to optimise location of injection and venting ports

33. Easy Flow Paths
Easy flow paths can strongly influence the filling pattern
Closed contours represent air traps: potential dry spots

34. System Requirements Minimum configuration: Recommended configuration:
Pentium II 450 PC, Windows™ NT 4.0 (SP4)
64 Mb RAM, 70 Mb free on disk
800x600 resolution, 16-bit color, 15” monitor
Recommended configuration:
Pentium III 1GHz PC, Windows™ 2000 / XP
256 Mb RAM, 100 Mb space on disk
1024x768 resolution, 24-bit color, 3D OpenGL acceleration in hardware, 19” monitor
16-bit sound card and speakers

35. Support and Services RTM-Worx helpdesk (phone, fax or E-Mail)
Modeling assistance, conversion of CAD/FEM files ( required)
Material data:
From our database (literature, projects)
Permeability measurements
Consultancy, RTM simulations
Development of extensions to RTM-Worx

36. Available Now! RTM-Worx 2.2 Contact POLYWORX:
CD-ROM with documentation, several examples, on-line context-sensitive help system, user manual etc.
Includes one-year service contract and course.
Non-isothermal reactive module optional.
Interface with MSC Patran/Laminate modeller optional.
Contact POLYWORX:
Arjen Koorevaar
Lekdijk 52, NL-2865 LD Ammerstol, The Netherlands
Phone: , Fax:
Website: