Strain Life


The Strain-Life method is applicable to a wide range of problems including low-cycle fatigue where the local elastic-plastic strain controls the fatigue life. The standard E-N method uses the Coffin-Manson-Basquin formula, defining the relationship between strain amplitude εa and the number of cycles to failure Nf. Material models can also be defined using general look-up curves. This enables the ability to interpolate multiple material data curves for factors such as mean stress or temperature.
Material models
        
  • Standard EN
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  • EN Mean multi-curve
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  • EN R-ratio multi-curve
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  • EN Temperature multi-curve
Strain combination methods or critical plane analysis
Stress-strain tracking for accurate cycle positioning
Back calculation to target life
Multiaxial Damage Models
        
  • Wang Brown
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  • Wang Brown with Mean
Mean stress corrections
        
  • Morrow
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  • Smith Watson Topper/li>    
  • Interpolate multiple curves/li>
Plasticity Corrections
        
  • Neuber
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  • Hoffman-Seeger
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  • Seeger-Heuler
Multiaxial Assessment
        
  • Biaxial
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  • 3D Multiaxial
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  • Auto-correction
Relationship Files

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