ITI^®-SIM 3.8

Specification of the Simulation Software

The simulation software ITI®-SIM requires Windows NT/2000/XP. It is a 32 bit optimized software package with several libraries, options, add-ons (extensions), interface links, etc. Thus the customer may select his optimum software configuration dedicated to his applications. The current release provides extremely high performance due to an integrated compiled simulation solver.

Here you find a list of details and specifications of all ITI®-SIM modules.

• Libraries and Options
• Model Generation Tools (Wizard, Manager, Explorer)
• Integrated Analysis Tools, Interfaces
• Professional Presentation and Visualization
• Test Installation
• Customer ARLA Engineering Service
• Training Courses and Workshops

ITI^®-SIM Libraries and Options

Model objects and macros (=prepared submodels) are integrated in different libraries, which will be extended from time to time due to the permanent software development. The following libraries and options are available (alterations reserved):

• Library "General Objects"
  application independent modelling features (general nodes, elements,
  signals including connectors and transformers, optionally: integration of differential equations
   
  

Library "Mechanics"
model generation of straight and branched mass-stiffness chains
(rotary systems – longitudinal systems – transformation to realize ratios)
 

• Library "Motors and Couplings"
  electrical motors, simplified engine, several types of flexible couplings, diaphragm couplings,
  (Note: Special engine models are available in separate macros.)
   

• Library "Electrical Motors"
  D.C. + A.C. motor (both with electro-mechanical model generation), servo motor
   

• Library "Transmission Elements"
  toothed gear stage, belt drive, ball-screw drive, slider crank mechanism, differential and planetary gear
   

• Library "Signal Sources"
  general characteristics for excitations and transmissions (like motors, couplings), import of external data
  (important for the model generation based on testing data & measurements)
   

• Library "Linear Signal Blocks"
  generating control structures (control loops) with different transfer functions
  (like P, I, D, PI, PID, PT1, PT2, etc.) and delay time functions
   

• Library "Time-Discrete Signal Blocks"
  sample-and-hold function, differentiator, integrator, standard delay, transfer function, A/D + D/A converters
   

• Bibliothek "Nonlinear Signal Blocks"
  limitation, hysteresis, deadband, multiple degree characteristics
   

• Library "Special Signal Blocks"
  signal analysis (min-max-mean values), derivatives, event detector
   

• Library "Switch"
  switches considering different multi-path conditions
   

• Library "Hydraulics"
  actuators (cylinders, valves, pumps and motors), connections, pipes and hoses, nozzles, orifices
   

• Library "Pneumatics"
  cylinders, valves, pneumatic-mechanical elements
   

• Library "Thermics"
  heat capacities, heat transformation, convection
   

• Library "Linear-Elastic Structures"
  integrating the static and dynamic flexible behaviour of linear-elastic structure by a modal system,
  interfac e to FEM (ANSYS®, ASCII) and to the experminental modal analysis
   

• Option "Natural Frequencies & Modes"
  calculation of natural frequencies and corresponding modes illustrated as normalized displacement or kinetic + potential energy at every station of the system, automatic generation of Campbell diagrams
   

• Interface / Library "SIM-Tools"
  programming interface, integration of customer algoirthms as UserDLLs (templates for C++);
  also available as runtime version
   

• Extension "ITI®-ORD 1.1"
  order analysis in the time-frequency domain with 2D/3D visualization
  (waterfall, map)
   

• Extension "ITI®-STAT 1.3" (based on ARLA®-SIMSTAT)
  steady-state simulation of drive systems (response functions like torques calculated in the frequency domain), angle dependent periodical (harmonic) excitation (as seen in reciprocating engines, compressors, propellers), graphical analysis of all response curves (torques, angles, power loss) depending on the speed; considering various damping methods

• Extension "ITI®-Vis3D 2.2"
  user-friendly animation of motions in the 3D domain, import of all ITI-SIM time signals and allocation to the 3D structures (INTEGRATED EDITION)
   
  Example (AVI file / 1.3 MB – presented by the Windows Media Player):
  Animation of a Backlash (Gear Rack)
   

• Powerful Interface Extensions

  • DDE to DIAdem

  • database link to Access (Office)

  • COM interface

  • simulator connection to Matlab+Simulink; C-code import from Simulink (RTW including runtime module)

  • simulator connection to ADAMS, SIMPACK, MSC.visualNastran 4D

Further information are available in a separate catalog, which you can get for free using our request form. Alterations reserved!

• User support in order to handle large model structures during the model generation process (Object Explorer)
   
• Multiple cancel or repeat functions of special operations by a simple mouse click
  (Undo / Redo)
   
• Collecting of objects to a new structure (submodel) which may be integrated in a complex overall structure, customerized modular model generation, creating new features (even password protected) (Macro Wizard)
   
• Administration of user variables in a single sheet (Variable Manager)
   
• Definition of further user created inputs or outputs of objects to manage the parameter I/O and the graphical presentation of the response functions (Pin Wizard)

• Parameter studies using the Parameter Variation Wizard
   
• Analysis of natural frequencies and modes at a linearized operation speed
   
• FFT analysis
   
• Powerful interface options (Access, COM, DIAdem, Matlab/Simulink, Adams, Simpack, MSC.visualNastran 4D …)

• Selecting any units (SI, American units, etc.), automatic unit conversion
   
• Signal presentations: y(t) or any y(x) graph
   
• Graphical presentation of time signals as bars, LED, meters, etc.
   
• Data presentation including the graphical model supported by a special report generator
  (Print Layout)
   
• Using the "clipboard" option to copy the results to any other Windows based application (like Word, Excel, Powerpoint ...)

On a special customer request, ARLA offers a limited test version for ITI-SIM within a limited time period. Ask for the conditions.

ARLA offers a customer service for ITI®-SIM related applications. This engineering service may contain a special model generation support, or other project related engineering jobs. Due to ARLA's know-how in a wide industrial domain, you will get the best service for computer simulation particularly for the solving of torsional vibrations in drive systems. Further information are available on our special site Engineering Services.

This is what a customer may get by ARLA dedicated to the ITI®-SIM application:

• customer model generation (the customer may use such models later by his own compatible ITI®-SIM version)
   
• creating customer macros (submodel structures, optionally password protected)
   
• Analysis tools for extended engineering works (like NVH analysis of vehicle powertrains)

Ask for our training courses which are usually customer dedicated (1-day or 2-day courses). Further information on other events (fairs, shows, conferences, etc.) are available on a special ARLA site.

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