Schneider electric and Dupont – Stiffness of a Bracket in Reinforced PBT

8
Jun

Dupont Schneider electric and Dupont – Stiffness of a Bracket in Reinforced PBT

 

Customer: Schneider Electric

  • Global specialist in energy management offerings integrated solutions for safe, efficient and reliable energy.
  • Continuously exploring new technologies, developing new products and serving new markets.

 

Customer: Dupont

  • Provider of wide range of innovative products and services for markets including electronics, communications, safety and protection.
  • DuPont uses DIGIMAT to support their customers in designing innovative composites.

 

Challenge

  • Predict structural response of a glass fiber filled PBT polymer bracket
  • Accurately design and optimize electrical components existing geometry

 

How to take into account the influence of processing in stiffness prediction?

Digimat Solution

  • Reserve engineering of an elasto-plastic DIGIMAT material model
  • Computation on the nonlinear stiffness based on fiber orientation prediction performed with Moldflow
  • Comparison with experimental stiffness for two different composite materials developed by DuPont:
  • 20% glass fiber reinforced PBT polymer, (material 1)
  • 50% glass fiber reinforced PBT polymer, (material 2)
  • Material damage behavior is not modeled

 

Results
 

  • Stiffness at break computed with standard elastoplastic materials leads to 85% error for part in material 1 and to 120% error for part in material 2;
  • Stiffness at break computed with elastoplastic DIGIMAT materials leads to 5% error for part in material 1 and to 2.5% error for part in material 2.
  • Process design can be trustfully optimized with DIGIMAT to improve part performance at better cost.

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