Wheel vibrational behaviour evaluation
Wheel vibrational behaviour evaluation
(OP)
Hi everybody there!
I would like to know how to evaluate the vibrational behaviour of railway wheels. The point is that we have looked what the market offers, and we want to foresee how the wheels are going to work considering their vibro-acustic features (principally at low frequencies).
What would you do?
Thank you very much mates.
Juan UreƱa
Mechanical engineer
I would like to know how to evaluate the vibrational behaviour of railway wheels. The point is that we have looked what the market offers, and we want to foresee how the wheels are going to work considering their vibro-acustic features (principally at low frequencies).
What would you do?
Thank you very much mates.
Juan UreƱa
Mechanical engineer





RE: Wheel vibrational behaviour evaluation
when you say you want to monitor the behaviour of the wheel , i think you should take into consideration the vabrational behaviour of the traction motors and gearboxes
Then i would monitor the Low Speed Gear, Front and Rear axle
high Speed Gear, Front and Rear axle,traction Motor, Front and Rear axle,Traction Motor Commutator End.
by controling the vibrational behaviour of the above components it might be easier to monitor the vabrational behaviour of the the wheels.
bk33
RE: Wheel vibrational behaviour evaluation
RE: Wheel vibrational behaviour evaluation
1) building a FE mode of the wheel and its boundary conditions.
2) forcing that model with the correct forcing functions to generate realistic vibrations
3) using those vibrations to drive an acoustic model of the air around it.
1 and 3 are fairly straightforward, using appropriate software (say Nastran, and then a BEM package for the acoustics - say Sysnoise). 2 is tricky.
If you can get results within 10 dB of the real answers then you will be doing well.
Cheers
Greg Locock