FREE VIBRATION ANALYSIS OF ISOSCELES TRIANGULAR MINDLIN PLATES BY THE TRIANGULAR DIFFERENTIAL QUADRATURE METHOD

The triangular differential quadrature method is applied to the free flexural vibration of isosceles triangular Mindlin plates. The first six frequencies are sought and the convergence of triangular differential quadrature method in vibrational analysis of triangular Mindlin plates is examined. In comparison with available results, good to excellent agreement is achieved for triangular plates with combinations of clamped and simply supported boundary conditions. The implementation of various other boundary conditions in triangular differential quadrature analysis is also discussed and the sensitivity of solution to the implementation of corner conditions in vibrational analysis is highlighted.