Parameter Identification of Composite Materials Based on Spectral Model by Using Model Updating Method

<table class="fixed-width table-group" id="tab4"><tr><td><table class="table"><colgroup><col style="width:8.01em"/><col style="width:4.99em"/><col style="width:6.83em"/></colgroup><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left">Frequency mode</td><td class="align_center">Test (Hz)</td><td class="align_center">Updated (Hz)</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">1</td><td class="align_center">24.5</td><td class="align_center">25.0</td></tr><tr><td class="align_left">2</td><td class="align_center">177.9</td><td class="align_center">175.1</td></tr><tr><td class="align_left">3</td><td class="align_center">493.8</td><td class="align_center">493.4</td></tr><tr><td class="align_left">4</td><td class="align_center">970.6</td><td class="align_center">967.8</td></tr><tr><td class="align_left">5</td><td class="align_center">1651.5</td><td class="align_center">1604.3</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Comparison of natural frequencies.</div>

International Journal of Polymer Science

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Table 4

Table 4: Parameter Identification of Composite Materials Based on Spectral Model by Using Model Updating Method 