747 Wing and Saturn V Modal Analysis

Class project, ME 318 Mechanical Vibrations. SolidWorks Simulation.

Checked a cantilever beam's FEA modes against hand calculations to validate my mesh and boundary conditions. Then modeled a 747 wing as a tapered cantilever with lumped engine masses and compared its first 3 modes against a shaker test of a physical wing model. The Saturn V's first bending mode came out at 17.0 Hz.

747 wing FEA, mode 1, animated. The engine masses visibly participate.

Shaker test

747 wing model on the shaker with accelerometers.

Spectrum analyzer showing modal peaks in the vibrations lab.

Saturn V model

First bending mode: 17.0 Hz in FEA.