METBD 440 FEA-HW, Lab Experiment
Simulation
Penn State - Erie, The Behrend College
A lab experiment is set up as pictured
above:
- The vibration response of a steel bar
(7/8" wide x 1/8" thick x 22" long) is to be studied by
experimental measurements in the lab.
- The bar is supported by a laboratory clamp
(blue grip) on the left end and the right end is attached by a bolt through
a hole in the bar to a signal generator. The adjustable laboratory
clamp base is attached by C-clamps to the table top.
In preparation for the lab meeting, you are
assigned to use FEA to model this system and predict the vibration response
which will be measured in a few weeks.
You
should observe the actual setup and make modeling decisions such as:
- 2D or 3D model ? Full geometric
representation (or less) ?
- How to model the bar's supports (rigid,
pinned, flexible) ?
- What analysis type (modal or harmonic or
general transient) ?
- Should prestress be included in the analysis ?
- Linear or nonlinear (material, geometric
effects, support surfaces) ?
- What is the dynamic input to the system ?
- Where will measurements be taken ?
- What responses will be measured ?
- Should damping be included ? If so, what
value ?
Turn in:
- a list of modeling assumptions/decisions
- plots to illustrate the model's geometry and
boundary conditions
- plots which illustrate the dynamic response
expected of this system
- verify/validate the model with appropriate
hand calculations
- Include a session log file
(of Essential Commands ONLY), to which you have added comments describing
the process of modeling, loading, and solving the FEA simulation.