Dynamic Stability of Cylindrical Shells under Moving Loads by Applying Advanced Controlling Techniques Part  I—Using Periodic Stiffeners

<table class="table-group" width="800px"><tr class="fig-image" id="a"><td><img alt="317202.fig.009a" src="https://static.hindawi.com/articles/aav/volume-2009/317202/figures/317202.fig.009a.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(a) </b>Plain tube</td></tr></table></td></tr><tr class="fig-image" id="b"><td><img alt="317202.fig.009b" src="https://static.hindawi.com/articles/aav/volume-2009/317202/figures/317202.fig.009b.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(b) </b>Stepped tube</td></tr></table></td></tr></table>

<table>Time-frequency representation at location number 1.</table>

Advances in Acoustics and Vibration

fig9

Figure 9

Figure 9: Dynamic Stability of Cylindrical Shells under Moving Loads by Applying Advanced Controlling Techniques Part  I—Using Periodic Stiffeners 