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Fatigue+ is a fatigue life analysis software for pressure vessels, boilers, heat exchangers, mechanical components at elevated temperatures, as well as other structures subjected to cyclic loading.  Fatigue+ is a design code compliance software.  Fatigue involves complex phenomena and mechanism, and the design codes constantly change as researches, practices and experiences evolve.  Using Fatigue+ the user can minimize risk of failure from cyclic loading and ensure design code compliance by applying automated fatigue life analysis, making the complicated tasks easy.  In addition, Fatigue+ provides a generic fatigue life analysis module that incorporate Basquin model, Basquin-Coffin-Manson model, Kandil-Brown-Miller model, Socie-Fatemi model and Matake Criterion.

Fatigue+ can handle cyclic loading from as simple as a single stress value, to component stresses of large number of nodes/elements in large number of loading steps generated by ANSYS, with the computer hardware limit being the ceiling.  Stress history files generated by other FEA packages can also be imported and processed.  Data input can be generated by manual entry, by importing ANSYS .rst files, or by importing stress history files.  The loading can be of constant amplitude or variable amplitude, proportional or non-proportional.  For non-proportional loading conditions, the program scans for critical plane that generates the highest fatigue damage ratio.

Fatigue+ calculates fatigue damage ratios for each loading cycle, sums cumulative damage ratios using Miner's Rule, and counts the number of loading cycles using rainflow counting algorithm following ASTM 1049 procedure.  For thermal transient loading, Fatigue+ calculates fatigue life at each loading step based on material properties at temperature.  In addition to reporting calculations, the graphical charts of stress range time history, stress range histogram and fatigue damage ratios are also generated.

Fatigue+ consists of different modules for different design codes, including the following:

  1. Generic Fatigue Life Analysis Module.
  2. EN 12952-3, Water-tube boilers and auxiliary installations — Part 3: Design and calculation for pressure parts of the boiler.
  3. EN 13445-3, Unfired pressure vessels Part 3: Design.
  4. ASME Section VIII, Rules for Construction of Pressure Vessels Division 2 — Alternative Rules.
  5. ASME Section VIII, Rules for Construction of Pressure Vessels Division 3 — Alternative Rules for Construction of High Pressure Vessels.
  6. ASME Section III — Rules for Construction of Nuclear Facility Components — Appendices.

The user can select a material from ASME Secion II Part D Properties, EN 10028 flat products, EN 10216 seamless tubes, EN 10217 welded tubes, EN 10213 castings, EN 10222 forgings, EN 10269 fasteners, or EN 10273 weldable bars.  The Generic Fatigue Life Analysis Module also contains a material database with common metals such as ASTM A36, SAE-AISI 1035 etc. in which the user can edit material, add material or delete material; the user can also export or import the material database.

  • Version
  • Download 2419
  • File Size 307.29 MB
  • File Count 1
  • Create Date December 9, 2020
  • Last Updated January 20, 2021