Free Vibration Analysis of Symmetrically Laminated Folded Plate Structures Using an Element-Free Galerkin Method

<table class="table-group" id="tab10"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td align="left">Modes</td><td align="center">Present results</td><td align="center">ANSYS results </td><td align="center">Relative errors</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td align="left">1</td><td align="center">9.18846</td><td align="center">9.08674</td><td align="center">1.1%</td></tr><tr><td align="left">2</td><td align="center">9.18846</td><td align="center">9.08674</td><td align="center">1.1%</td></tr><tr><td align="left">3</td><td align="center">9.65333</td><td align="center">9.58148</td><td align="center">0.7%</td></tr><tr><td align="left">4</td><td align="center">13.41558</td><td align="center">13.23601</td><td align="center">1.4%</td></tr><tr><td align="left">5</td><td align="center">14.99186</td><td align="center">14.81606</td><td align="center">1.2%</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Dimensionless free vibration frequencies of the laminated shell (Figure <a href="../fig21/#b">21(b)</a>).

Mathematical Problems in Engineering

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Table 10

Table 10: Free Vibration Analysis of Symmetrically Laminated Folded Plate Structures Using an Element-Free Galerkin Method 