Abstract
Fatigue in steel structures subjected to stochastic loading is
studied. Of special interest is the problem of fatigue damage
accumulation and in this connection, a comparison between
experimental results and results obtained using fracture
mechanics. Fatigue test results obtained for welded plate test
specimens are compared with fatigue life predictions using a
fracture mechanics approach. In the calculation of the fatigue
life, the influence of the welding residual stresses and crack
closure on the fatigue crack growth is considered. A description
of the crack closure model for analytical determination of the
fatigue life is included. Furthermore, the results obtained in
studies of the various parameters that have an influence on the
fatigue life, are given. A very good agreement between
experimental and analytical results is obtained, when the crack
closure model is used in determination of the analytical fatigue
lives. Both the analytical and experimental results obtained show
that the Miner rule may give quite unconservative predictions of
the fatigue life for the types of stochastic loading studied.
| Original language | English |
|---|---|
| Journal | Journal of Constructional Steel Research |
| Volume | 37 |
| Issue number | No. 3 |
| Pages (from-to) | 229-261 |
| Publication status | Published - 1996 |