Quintin Williams
L20282460
Mechanical Simulation with FEA (MEEN 5324)
Question #1
The material is set to be the ANSYS default for Aluminum Alloy.
The damping ratio is set to be 4%.
An assumption that the car will only shake in the vertical direction. (The car is constrained to only allow
vertical motion.)
The plot for both points is shown below.
Top Left Corner Acceleration Response
Bottom Right Corner Acceleration Response
Question #2
MODE #
1
2
3
Natural Frequency (Hz)
7.0605
19.783
28.587
Mass 2
Mass 3
Question #3
A harmonic load is a load which is defined as a function of frequency.
If a system is excited close to its natural frequency, the system will experience resonance or in other words an
extreme response.
A discrete mass system has a limited amount of degrees of freedom while a continuous system which is
realistically all things have an infinite number of degrees of freedom.
Resonance is when a system is excited at its natural frequency and can expect a very large response from the
input.