Fatigue and How to Use It in TRIFLEX ® WINDOWS Fatigue and How to Use It in TRIFLEX ® WINDOWS

Fatigue and How to Use It in TRIFLEX® WINDOWS TRIFLEX ® WINDOWS 2  TRIFLEX Windows processes the calculation according ASME Code, Section VIII, Division 2, Appendix 5  The results of the calculation are individual usage factors for each load case and a cumulative usage factor for all active load cases  A cumulative usage factor greater than 1 means that a fatigue failure is expected in that area of the piping system  A fatigue analysis is required by B31.X Codes

Fatigue and How to Use It in TRIFLEX® WINDOWS TRIFLEX ® WINDOWS 3 From “Setup” task bar, pick “Modeling Default” option Check the box for “Perform Fatigue Analysis”

Fatigue and How to Use It in TRIFLEX® WINDOWS TRIFLEX ® WINDOWS 4 From “Setup” task bar, pick “Cyclic Loading” option For each active load case input the number of design cycles

Fatigue and How to Use It in TRIFLEX® WINDOWS TRIFLEX ® WINDOWS 5 TRIFLEX will calculate the alternating stress and usage factors only for active load cases. The cumulative usage factor will apply for all active load cases

Fatigue and How to Use It in TRIFLEX® WINDOWS TRIFLEX ® WINDOWS 6 From “Code Compliance” Tab select the “Fatigue Curve” which will be used for fatigue calculation

Fatigue and How to Use It in TRIFLEX® WINDOWS TRIFLEX ® WINDOWS 7 If the fatigue curves from the selection list do not apply to your material, you can input your own data using “Define Custom Curves” option

Fatigue and How to Use It in TRIFLEX® WINDOWS TRIFLEX ® WINDOWS 8 The “Custom Curves” can be saved to data files. These files can be loaded, edited and used in other piping models

Fatigue and How to Use It in TRIFLEX® WINDOWS TRIFLEX ® WINDOWS 9 For each Load Case, the output results for the Fatigue calculation are: Alternating Stress, Maximum Allowable Cycles and Usage factor “Cumulative Usage Factor” includes the effects of all active load cases

Fatigue and How to Use It in TRIFLEX® WINDOWS TRIFLEX ® WINDOWS 10 The output results for the Fatigue calculation can be displayed using color mapped graphics

Fatigue and How to Use It in TRIFLEX® WINDOWS TRIFLEX ® WINDOWS 11 For more details please contact: 6219 Brittmoore Road Houston, Texas U.S.A. Voice: Fax: :