matonking
Mechanical
- Nov 4, 2013
- 5
I am doing my MEng project on the modification of an Ultrasonic drill. The FEA model must analyse the collision of a ball bearing with the tip of a "horn" that is tuned to resonate at longitudinal mode at 20kHz. The horn is piece of metal driven by a transducer and looks like this:
The narrow tip diameter induces a gain from the base excitation of nearly 40x.
Question:
How to I get Abaqus to input a base excitation of 5E-6m at 20kHz? I expect to see the tip oscillating with a substantial gain.
I've tried to use numerous methods, like periods loads, etc, but none seem to output the expected results. Am I missing something?
The horn must remain stationary, but with a periodic base excitation of 5E-6 @ 20kHz. Only the base and the tip should be moving.
REALLY NEED HELP!
The narrow tip diameter induces a gain from the base excitation of nearly 40x.
Question:
How to I get Abaqus to input a base excitation of 5E-6m at 20kHz? I expect to see the tip oscillating with a substantial gain.
I've tried to use numerous methods, like periods loads, etc, but none seem to output the expected results. Am I missing something?
The horn must remain stationary, but with a periodic base excitation of 5E-6 @ 20kHz. Only the base and the tip should be moving.
REALLY NEED HELP!
