NEi Software Nastran Finite Element Analysis

Nastran Finite Element Analysis and Simulation Software

United States United States | International  

Login | Contact Us | New to FEA? | Demo 


NEi Advanced Fatigue

NEi FatigueNEi Advanced Fatigue (winLIFE) by Steinbeis TZ builds upon the fatigue capabilities of NEi Nastran. The add-on includes nominal and elastic stress methods along with local strain approach; nonlinear material using Neuber's rule; Haigh diagram, Woehler and hysteresis curve generation; failure probability and multiple material hypotheses for creating cyclic material properties, as well as a fatigue properties material database.

email Request Data Sheet


checkFatigue Calculation without FEM

  • Classical methods: nominal stress concept and local concept
  • Stress S-N curves and mean stress sensitivity are required for the nominal stress concept
  • Cyclic stress-strain curves, strain e-N curves and damage parameter curves according to Smith, Watson and Topper are required for the local concept
  • Component loading is provided for both methods
  • Loading history (stress, moment, force) obtained from a measurement can also be used
  • Rainflow method used for counting of stress histories
  • Easy to use Load Spectrum generator
  • S-N curve generator for steel, aluminum alloys and cast iron
  • Fatigue life database calculated (can be extended by the user); contains S-N curves and data describing the damage for materials commonly used
  • Rainflow matrix plots
  • Load spectrum plots
  • Load hysteresis plots
  • Damage XY and Contour plots

checkFatigue Calculation Combined with FEM

  • Static FE calculation is used to ascertain the stress within the component
  • The direction of the standard load must correspond to the actual force
  • Critical nodes can be selected for the fatigue life calculation thus reducing the calculation time
  • S-N curves for failure probabilities between 0 and 100% can be created

checkMultiaxial Calculation

  • Method used when several loadings have an effect on a structure and are not in sync, and not proportional
  • Up to 100 loadings working independently can be taken into account
  • Should be used if the principal stress directions vary considerably in the component as the calculation is very time consuming
  • Applications: bodywork structures, axle components, crankshafts, rotary blades for wind power stations
  • Strain measurement data can be used
Phone (U.S.): (877) - Nastran
Phone (International): +1 (714) 899-1220
Site Map | Legal Notices | Privacy
Copyright © NEi Software. All Rights Reserved.