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RheoWare ForMview (thermoforming)

This software technology focuses on thermoforming (sheet reheat, forming and solidification) and includes the prediction of the following systems:

  • Thermoforming with multiple plugs
  • Thermoforming of profile heated preforms or sheets

The core program solves the non-isothermal solid mechanics constitutive equations specifically for the individual phases of the thermoforming process:

  • Sheet reheating
  • Sheet formation
  • Part solidification and warpage

Pre-processor is an interactive user-friendly interface which guides the user through the input of key process parameters. Input is accomplished by simply entering processing conditions and material properties. Alternatively, material properties can be loaded from a database.

Virtual design of optimal plug shape and forming technique for aeronautical application using PACE FormView avoids major processing problems.

    • strech blow molding

 

Detailed software features

Thermomechanical material models

  • Viscoelastic models for polyolefin and engineering materials
  • Damping function capabilities in the viscoelastic material model
  • Thermal effects expressed through WLF model

 


Sheet reheat

  • Effect of sheet oven geometries
  • Coupled effects of sag and heat transfer
  • Coupled conductive, convective and radiative heat transfer analysis

Sheet forming

  • Viscoelastic models for large deformations.
  • Non-isothermal effects
  • Prediction of forming defects (webs and folds)
  • Plug effects including slip

Solidification

  • Viscoelastic model for small deformations
  • Part cooling, shrinkage, warpage and residual stresses

High performance iterative solver

Input/output formats

  • CAD/CAE Geometry import via STL, PATRAN’ AUTOCAD, Unigraphics, IDEAS or Ansys (through Ansys-Patran converter)
  • Export results for structural analysis to ANSYS format

Output

  • Fully complete sheet temperature and sag during reheat
  • Part thickness, temperature and strain stress distributions during forming
  • Part deformation and residual stresses

thermoforming formview