Free Vibration Analysis of a Rotating Composite Shaft Using the <svg style="vertical-align:-3.294pt;width:11.0875px;" id="M1" height="14.1125" version="1.1" viewBox="0 0 11.0875 14.1125" width="11.0875"  xmlns="http://www.w3.org/2000/svg">
	<g transform="matrix(1.25,0,0,-1.25,0,14.1125)">
		<g transform="translate(72,-60.71)">
			<text transform="matrix(1,0,0,-1,-71.95,64.04)">
				<tspan style="font-size: 17.93px; " x="0" y="0">𝑝</tspan>
			</text>

		</g>
	</g>
</svg>-Version of the Finite Element Method

<table>The Campbell 
 diagram of a composite shaft (F)
forward modes, (B) backward modes).</table>

International Journal of Rotating Machinery

fig9

Figure 9

Figure 9: Free Vibration Analysis of a Rotating Composite Shaft Using the <svg style="vertical-align:-3.294pt;width:11.0875px;" id="M1" height="14.1125" version="1.1" viewBox="0 0 11.0875 14.1125" width="11.0875"  xmlns="http://www.w3.org/2000/svg">
	<g transform="matrix(1.25,0,0,-1.25,0,14.1125)">
		<g transform="translate(72,-60.71)">
			<text transform="matrix(1,0,0,-1,-71.95,64.04)">
				<tspan style="font-size: 17.93px; " x="0" y="0">𝑝</tspan>
			</text>

		</g>
	</g>
</svg>-Version of the Finite Element Method 

International Journal of Rotating Machinery

Free Vibration Analysis of a Rotating Composite Shaft Using the 𝑝 -Version of the Finite Element Method

Figure 9

Free Vibration Analysis of a Rotating Composite Shaft Using the -Version of the Finite Element Method