SERVICES

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- Numerical Simulation

- Conventional Calculations

- Fatigue & Damage Tolerance Analysis

- Testing

- Programming  

 


Numerical Simulation

  • Creation and modification of FE models
  • Analysis and interpretation of the results
  • Linear, Non-linear, Buckling, Dynamic

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Stehlin Engineering adopted NX/NASTRAN as finite element code and FEMAP as pre- and postprocessor. A robust interface between CAD data and FEM data is provided via ASIS or PARASOLID engines. This permits to model and analyse very complex 3D parts and give feedback to the designers in electronic form if desired. 


Conventional Calculations

  • Strength
  • Stiffness
  • Stability
  • Connections
  • Metallic Materials
  • Composite Materials
  • Sandwich Structures

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Stehlin Engineering performs detailed stress analyses of structures using established practices from the aerospace industry. The company has built up a strong knowledge in the design and analysis of composite, sandwich and classical reinforced skin-stringer structures with an in-depth expertise in the calculation of local effects, such as load introductions, connections, fittings, local instabilities, etc....

The company intensively uses data sheets and manuals such as the ESDU's (Engineering Sciences Data Unit), MIL Handbooks, ESA and NASA Handbooks, Bruhn, etc.


Fatigue & Damage Tolerance Analysis

  • Spectrum Development
  • Stress Concentration Assessment
  • Crack Initiation
  • Crack Growth
  • Beta Solutions
  • Residual Strength
  • Bonded Patches
  • Riveted Patches

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Stehlin Engineering adopted AFGROW as crack initiation and crack growth code and FRANC2D as stress intensity computation tool.

In 2002, Stehlin Engineering developed an original method to perform fatigue analysis of bolted and riveted connections in a very efficient way using the Finite Element Method. Stehlin Engineering has been selected to write a paper on this subject for the ICAF 2003.


Testing

  • Test Plan
  • Intrumentation Definition
  • Load Cases Definition
  • Predictions
  • Survey
  • Interpretation

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Programming

  • Visual Basic
  • Visual Basic for Applications
  • OLE
  • User Friendly
  • Customer Oriented

       


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