VMP09-T4

VMP09-T4
Cantilever with Off-Center Point Masses

Test Description

A cantilever beam situated horizontally with two off-center lump masses of mass M₁ = 10000 kg and M₂ = 1000 kg at right free ends. The beam is constrained in all DOF at left end. Frequency vibration analysis is performed on the model.

Geometic Properties

Material Properties

Boundary Conditions

L = 10m

H = 4m

E = 200 x 10⁹ N/m²

ρ = 8000.0 kg/m³

ν = 0.3

Applied at right beam endpoint:

U_y = 0

U_x = 0

U_z = 0

R_x = 0

R_y = 0

R_z = 0

Results

Results are tabulated and displayed as in the NAFEMS manual.


             |   Mechanical APDL   |   RATIO  |         INPUT         |
  
 BEAM188
  MODE1              1.7198           0.9982        vmp09-t4-188
  MODE2              1.7236           0.9980        vmp09-t4-188
  MODE3              7.4021           0.9985        vmp09-t4-188
  MODE4              9.9733           1.0002        vmp09-t4-188
  MODE5             18.0842           0.9961        vmp09-t4-188
  MODE6             27.0797           1.0046        vmp09-t4-188
 BEAM189
  MODE1              1.7203           0.9984        vmp09-t4-189
  MODE2              1.7238           0.9982        vmp09-t4-189
  MODE3              7.4032           0.9987        vmp09-t4-189
  MODE4              9.9365           0.9965        vmp09-t4-189
  MODE5             18.0351           0.9934        vmp09-t4-189
  MODE6             26.6788           0.9897        vmp09-t4-189
  
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Element Mechanical APDL Ratio Test Input

vmp09-t4-188.dat

vmp09-t4-189.dat