nesc academy 1 rainflow cycle counting for continuous beams by tom irvine unit 34

Download NESC Academy 1 Rainflow Cycle Counting for Continuous Beams By Tom Irvine Unit 34

If you can't read please download the document

Upload: ashley-stanley

Post on 20-Jan-2018

221 views

Category:

Documents


0 download

DESCRIPTION

3  The curve can be roughly divided into two segments  The first is the low-cycle fatigue portion from 1 to 1000 cycles, which is concave as viewed from the origin  The second portion is the high-cycle curve beginning at 1000, which is convex as viewed from the origin  The stress level for one-half cycle is the ultimate stress limit For N>1538 and S < 39.7 log 10 (S) = log 10 (N) log 10 (N) = log 10 (S) S-N Curve