## Category Archives: Fatigue Analysis

## Improvement of the fatigue limit – Joints

Improvement of joints with rows of bolts or rivets A simple double strap joint with two rows of bolts at each side of the joint is shown in the following Figure. Figure 1 It could be a good design from … Continue reading

## Miner’s Rule

Miner’s rule is probably the simplest cumulative damage model. It states that if there are k different stress levels (with linear damage hypothesis) and the average number of cycles to failure at the ith stress, Si, is Ni, then the damage fraction, … Continue reading

## Rainflow count method

The rainflow ( “rain-flow counting method”) is used in the analysis of fatigue in order to reduce a spectrum of varying stress into a set of simple stress reversals. Its importance is that it allows the application of Miner’s rule in order to assess the fatigue life of … Continue reading