Aerospace

e-Xstream offers the aerospace industry's engineers and material scientists who need to predict the performance of composites, a unique platform that uses constituent material data to construct lamina and laminate behavior and the technology and expertise to considerably reduce the cost and time needed to develop innovative and higher quality composite materials and structures.

In the steady quest for lightweighting solutions, continuous carbon fiber composites are becoming more approachable for design in the Aerospace industry using composite materials.

However, traditional modeling methods don’t allow to predict accurately performance of composites, especially when it comes to failure and post-failure prediction and yield to over-designed structures.

Solution

Unlike classical laminate analysis (First Ply Failure), Digimat provides capabilities to capture realistically nonlinear material behavior at the microscopic level for each phase, allowing its users to expand on known properties or design and optimize entirely new material systems.

Benefits
  • Higher confidence in the design as non-linear properties of each phase are considered. (Related products: Digimat-MF, Digimat-FE)
  • Improve performance with weight savings for any structure made of Continuous Fiber Reinforced Polymer (CFRP), Short Fiber or Sandwich Structures.
  • Develop a complete Virtual Testing Procedure of Material and Laminates.
“The integration of progressive damage models, like Matzenmiller-Lubliner-Taylor model, in nonlinear multi-scale homogenization methods available in Digimat enables to predictively take into account constituent’s properties and microstructure influences over material performance and accurately compute stresses in theses constituents."
-Salvatore Russo, Stress analyst, Airframe, Alenia Aermacchi
Digimat is strongly coupled to:
  • Major nonlinear FEA software (Nastran, Marc, Abaqus, ANSYS, LS-DYNA, PAM-CRASH and SAMCEF)
  • Injection Molding software (Moldflow, SigmaSoft, Moldex3, REM3D)
  • Draping and Forming software (Simulayt, PamForm)
Targeted materials and applications
  • CFRP, Short Fibers, Sandwich and HoneyComb
  • Primary and Secondary Aircraft Components or Aircraft Interiors Components
  • Engine components, Engine Cover
  • Hard metals: Landing gear
Targeted performances
  • Structural stiffness
  • Vibration frequencies and modes
  • Damage under cyclic loading
  • Failure under quasi-static loading
  • Failure under crash loading
  • Shape stability (large temperature gradients)
  • Etc.

Industries:
Aerospace

Overview:
To speed-up material selection and to decrease the development cost of structures made of composites materials, the virtual coupon testing appears to be a promising way. Digimat proposes a complete modeling solution, allowing to correctly predict the successive ply progressive failure of UD. This example shows how to apply the Digimat technology on the open-hole test case performed by Alenia Aermacchi.

 
 
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