Modal Analysis of a Rectangular Plate - PPT
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- 1. MAE 501INDEPENDENT STUDYModal Analysis of a Rectangular
2. Problem Details
To determine the lowest six non-zero frequencies and associated mode shapes for a rectangular plate for three different thickness of the plate.
Geometry of the plate:
Rectangular Plate with length 2a, width 2b and thickness h.
= h/b = 1/4, 1/16, 1/64
a = 20m, b = 10 mm, h = 2.5mm, 0.625mm, 0.15625m
Thus, the dimensions of the plate are as follows:
Length of the plate = 40mm
Width of the plate = 20mm
Thickness of the plate = 2.5mm, 0.625mm, 0.15625mm
3. Problem Details
Material Properties of the plate:
- = Poissons ratio = 0.05
4. Material of the plate : Cast Iron 5. E = Modulus of
Elasticity = 139.7GPa 6. = Density = 7300 kg/m3Boundary
- The two adjacent edges of the rectangular plate are fixed while the other two are free.
- The modal analysis is performed using two types of elements i.e. solid and shell.