StructLife

StructLife is a software tool for computing fatigue life (typically crack initiation) of metallic structures subjected to generic load spectra. Both Uniaxial and Multiaxial Fatigue analysis approaches are implemented. The analysis can be performed by selecting the more appropriate calculation.

StructLife
BENEFITS

  • Minimize the need to perform fatigue tests which are time consuming and expansive
  • User friendly Graphical User Interface
  • Easy to use
  • Cost effective solution

Features and
CAPABILITIES

  • Fatigue analysis can be performed using Finite Element Models or text files in case the FEM are not available
  • Support both Uniaxial and Multiaxial fatigue analyses
    • Strain based Neuber or Equivalent Strain Energy Density rules in conjunction with Morrow's, Smith-Watson-Topper or Manson-Halford corrections are used
    • For Multiaxial fatigue a strain based critical plane approach is implemented for Non-Proportional Loadings conditions and the Hoffmann-Seeger approach is implemented for the Proportional Loadings conditions
  • Multiaxiality analyzer is implemented in order to check how much “mulatiaxial” is the stress tensors time history at defined hot spots
  • Process load(s) spectrum for subsequent fatigue analysis.
  • Counted sequences can be visualized in terms of exceedance curves of range-mean exceedance histograms
  • Compute the number of cycles before the crack is generated in the structure
  • Determine the location and orientation of the first crack
  • Input loads spectra can be imported, filtered, and modified
    • Interfaces to Nastran FE solver and ANSYS FE
  • A dedicated post-processor is implemented
  • The structure can be visualized and fringe plots of stress or life can be displayed
  • Elements can be selected and related info can be retrieved (local stress tensor time history, local calculation breakdown, ...)
  • The user can decide to analyse the entire structure or a defined portion
  • Stress based S-N curves analysis can be performed based on MIL-HBDK
  • Crack growth analysis with Nasgro model including a crack retardation model (Generalized Willemborg)
Process Optimization is headquartered in Southern California and is an experienced, value added engineering and CAE software consulting firm.
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info@processopt.com
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