1 / 24

Dynamic Simulation of an Injection Molding Machine

Dynamic Simulation of an Injection Molding Machine. GAMM2005 Mehrkörpersysteme und Kinematik 29. März - 01. April 2005, Luxemburg. C . Hostert H. Kollmeier S. Maas R. Nordmann A. Zürbes. Université du Luxembourg. Index. Project Project QUADLOC Software Models MBS Flexible Bodies

esykes
Download Presentation

Dynamic Simulation of an Injection Molding Machine

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Dynamic Simulation of anInjection Molding Machine GAMM2005 Mehrkörpersysteme und Kinematik 29. März - 01. April 2005, Luxemburg C. Hostert H. Kollmeier S. Maas R. Nordmann A. Zürbes Université du Luxembourg

  2. Index • Project • Project • QUADLOC • Software • Models • MBS • Flexible Bodies • Hydraulics • Controls • Simulation • Results • Prospects • Project • Description of project • QUADLOC™ clamp unit • Simulation tools • Models • Multi-Body Simulation model • Integration of flexible bodies in MBS • Hydraulic model • Controls model • Simulation • Results / Comparison with measurements • Prospects

  3. Project • Project • Project • QUADLOC • Software • Models • MBS • Flexible Bodies • Hydraulics • Controls • Simulation • Results • Prospects • 3 partners: • HUSKY Injection Molding Systems • TU-Darmstadt • Université du Luxembourg dynamic simulation of a QUADLOC clamp unit integration of mechanical, hydraulic and controls systems combination of commercial software

  4. QUADLOC™ clamp unit • Project • Project • QUADLOC • Software • Models • MBS • Flexible Bodies • Hydraulics • Controls • Simulation • Results • Prospects 2-platen design 2 stroke cylinders stationary platen 4 tie bars 4 integrated clamp pistons moving platen

  5. Unigraphics geometries for models DSHplus hydraulics ADAMS Multi-Body ANSYS Finite Element flexibility of components co-simulation of mechatronic systems data for stress analysis Simulink controls measurements validation Software • Project • Project • QUADLOC • Software • Models • MBS • Flexible Bodies • Hydraulics • Controls • Simulation • Results • Prospects combination of commercial simulation programs

  6. revolute joint with friction sperical joint flexible body rigid body sperical joint with joint motion hydraulic force MBS model of clamp locking • Project • Project • QUADLOC • Software • Models • MBS • Flexible Bodies • Hydraulics • Controls • Simulation • Results • Prospects 1 rigid-body DOF + 57 flexible-body DOFs

  7. hydraulic force contact forces rigid body flexible body bushings rigid body MBS model of moving platen stroke • Project • Project • QUADLOC • Software • Models • MBS • Flexible Bodies • Hydraulics • Controls • Simulation • Results • Prospects 6 rigid-body DOFs + 150 flexible-body DOFs

  8. FE-model for moving platen stroke • Project • Project • QUADLOC • Software • Models • MBS • Flexible Body • Hydraulics • Controls • Simulation • Results • Prospects SOLID 187 BEAM 188 SHELL 63 COMBIN 14 : connecting substructures BEAM 4 : interface nodes

  9. Flexible bodies in MBS • Project • Project • QUADLOC • Software • Models • MBS • Flexible Body • Hydraulics • Controls • Simulation • Results • Prospects 1st step: Component Mode Synthesis called Craig-Bampton approach: constraint modes & fixed normal modes i  interior b  boundary C  constraint N  normal siehe auch R.Gasch, Strukturdynamik – Band 2 gemischte statische und modale Kondensation

  10. Flexible bodies in MBS • Project • Project • QUADLOC • Software • Models • MBS • Flexible Body • Hydraulics • Controls • Simulation • Results • Prospects 2ndstep: Mathematical Transformation Craig-Bampton modal basis difficult to implement in MBS code solving the following eigenvalue problem: thus so that • synthesized from fixednormal and constraint modes are: • 6 rigid body modes; can now be disabled in MBS, • free normal modes, • mode shapes of the boundary, • modes with no apparent physical meaning.

  11. P B G Flexible bodies in MBS • Project • Project • QUADLOC • Software • Models • MBS • Flexible Body • Hydraulics • Controls • Simulation • Results • Prospects 3rd step: Integration in ADAMS position: where orientation: 3-1-3 Euler Angles ( transformation matrix A) angular velocity: linear velocity: generalized coordinate set

  12. Theory of Flexible Bodies • Project • Project • QUADLOC • Software • Models • MBS • Flexible Body • Hydraulics • Controls • Simulation • Results • Prospects 3rd step: Integration in ADAMS Lagrange's equations for a flexible body: kinetic energy: potential energy: dissipative energy:

  13. Parasolid 2. ANSYS/Workbench automatic meshing 3. ANSYS/Classic SOLID 187 manual generation of BEAM elements BEAM 4 interface node for MBS model FE-model of a connecting bar • Project • Project • QUADLOC • Software • Models • MBS • Flexible Body • Hydraulics • Controls • Simulation • Results • Prospects 1. CAD model

  14. Integration of ANSYS-models in ADAMS • Project • Project • QUADLOC • Software • Models • MBS • Flexible Body • Hydraulics • Controls • Simulation • Results • Prospects ADAMS-interface available in ANSYS • generation of FE-model • ADAMS-interface: • selection of interface nodes • reduction of FE-model • transfer of reduced matrices (mnf-File)  assembly of flexible body into MBS-model

  15. z y x Verification of reduced model • Project • Project • QUADLOC • Software • Models • MBS • Flexible Body • Hydraulics • Controls • Simulation • Results • Prospects modal analysis of assembled connecting bar

  16. Moving platen and tie bar sliding • Project • Project • QUADLOC • Software • Models • MBS • Flexible Body • Hydraulics • Controls • Simulation • Results • Prospects modelled in ADAMS with IMPACT statement non-linear spring-damper maintains continuous contact between 2 geometries

  17. moving platen shoe d1 d2 d3 d4 DZ DY,VY node clamp base 1 0 d1 d2 d3 d4 Moving platen and tie bar sliding • Project • Project • QUADLOC • Software • Models • MBS • Flexible Body • Hydraulics • Controls • Simulation • Results • Prospects own-programmed statement using IMPACT contact force permanently calculated only applied to node when necessary through a weighting function

  18. Moving platen and tie bar sliding • Project • Project • QUADLOC • Software • Models • MBS • Flexible Body • Hydraulics • Controls • Simulation • Results • Prospects disadvantges: - huge number of DOFs - discontinuous contact forces  use of slave nodes for sliding

  19. Hydraulic model • Project • Project • QUADLOC • Software • Models • MBS • Flexible Bodies • Hydraulics • Controls • Simulation • Results • Prospects DSHplus by FLUIDON GmbH Spin-off of IFAS, RWTH-Aachen differential cylinder modeling of cylinder cushion hoses pilot operated 43 proportional valve pipes and hoses pump and pressure-reducing valve

  20. model of components: • pipe • valve RH LH CH RH Hydraulic model • Project • Project • QUADLOC • Software • Models • MBS • Flexible Bodies • Hydraulics • Controls • Simulation • Results • Prospects formulas based on - one-dimensional flow theory - supplemented by empirical considerations Resistance : Capacitance : Inductance :

  21. Co-simulation • Project • Project • QUADLOC • Software • Models • MBS • Flexible Bodies • Hydraulics • Controls • Simulation • Results • Prospects ADAMS Mechanics DSHplus Hydraulics SIMULINK Controls • cylinder force • moving platen position • position of cylinder • velocity of cylinder • input voltage valve • input voltage valve

  22. Comparison with measurements • Project • Project • QUADLOC • Software • Models • MBS • Flexible Bodies • Hydraulics • Controls • Simulation • Results • Prospects

  23. Project • Project • QUADLOC • Software • Models • MBS • Flexible Bodies • Hydraulics • Controls • Simulation • Results • Prospects

  24. Simulation of Mechatronic Systems • Project • Project • QUADLOC • Software • Models • MBS • Flexible Bodies • Hydraulics • Controls • Simulation • Results • Prospects interest of integrated simulations : • get full understanding of dynamics of complete system, difficult to assess with simple calculations • analyse influence of one parameter on behaviour of complete system • analyse interactions between sub-systems, e.g. hydraulics and mechanics • work-out improvements • replace costly prototypes

More Related