Comparative Vibration Analysis of  a Parametrically 
                        Nonlinear Excited Oscillator  Using HPM and 
                        Numerical Method

<table>Accuracy of Figure <a href="../fig1/">1</a> versus <svg height="9.875" id="M54" style="vertical-align:-2.29482pt" version="1.1" viewbox="0 0 10.5375 9.875" width="10.5375" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,9.875)">
<g transform="translate(72,-64.1)">
<text transform="matrix(1,0,0,-1,-71.95,66.44)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝜑</tspan>
</text>
</g>
</g>
</svg> (<svg height="13.55" id="M55" style="vertical-align:-2.29482pt" version="1.1" viewbox="0 0 64.9375 13.55" width="64.9375" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,13.55)">
<g transform="translate(72,-61.16)">
<text transform="matrix(1,0,0,-1,-71.95,63.5)">
<tspan style="font-size: 12.50px; " x="0" y="0">2</tspan>
<tspan style="font-size: 12.50px; " x="9.7148314" y="0">&lt;</tspan>
<tspan style="font-size: 12.50px; " x="21.75522" y="0">𝜑</tspan>
<tspan style="font-size: 12.50px; " x="33.558052" y="0">&lt;</tspan>
<tspan style="font-size: 12.50px; " x="45.598442" y="0">4</tspan>
</text>
</g>
</g>
</svg>).</table>

Mathematical Problems in Engineering

fig6

Figure 6

Figure 6: Comparative Vibration Analysis of  a Parametrically 
                        Nonlinear Excited Oscillator  Using HPM and 
                        Numerical Method 

Figure 6 | Comparative Vibration Analysis of  a Parametrically 
                        Nonlinear Excited Oscillator  Using HPM and 
                        Numerical Method 

Mathematical Problems in Engineering

Comparative Vibration Analysis of a Parametrically Nonlinear Excited Oscillator Using HPM and Numerical Method

Figure 6