Wheel assembly testing
Wheel assembly testing
(OP)
I'm looking for some information in regards to testing of wheel assemblies (actually, the balance weights). There doesn't appear to be a lot of standardized test methods or design criteria for what should be expected. Specifically, I would like the loading conditions the assembly will be subjected to through a repeating cycle.
I've seen this "4-5g vertically, 3-4g fore-aft, and 2g laterally" condition mentioned but it doesn't provide what I'm trying to do. The variable I'd like to test is jerk/shock/jolt. Pick your poison, it's called many different things. I'd like to develop a simple repeatable test that will allow me to simulate rough driving conditions (including potholes) to check for wheel balance weight retention. This is a good means to provide assurance that the product will stay on through it's entire life-cycle.
Any help given will be greatly appreciated! Thanks!!!
I've seen this "4-5g vertically, 3-4g fore-aft, and 2g laterally" condition mentioned but it doesn't provide what I'm trying to do. The variable I'd like to test is jerk/shock/jolt. Pick your poison, it's called many different things. I'd like to develop a simple repeatable test that will allow me to simulate rough driving conditions (including potholes) to check for wheel balance weight retention. This is a good means to provide assurance that the product will stay on through it's entire life-cycle.
Any help given will be greatly appreciated! Thanks!!!





RE: Wheel assembly testing
RE: Wheel assembly testing
RE: Wheel assembly testing
Or call an auto manufacturer. For example, GM has a Tire & Wheel group in Milford with a book of specs on wheels and wheel weights thicker than a phone book. (When they used to make phone books).
RE: Wheel assembly testing
RE: Wheel assembly testing
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: Wheel assembly testing
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: Wheel assembly testing
Greg, are you aware of any design criteria around the subject, specifically the shock loads (jerk/jolt) of a typical, low-profile tire, wheel assembly? I found a technical paper abstract, Shock Loading Experiments and Requirements for Electric Wheel Motors on Military Vehicles(SAE 2005-01-0278), that shows 150g's with a pulse width of 10 to 20ms. This is probably overkill for passenger vehicles but at least gives a good baseline for the test apparatus minus having something else available.
RE: Wheel assembly testing
Yes, for wheelweight retention accelerometers would probably be good enough, or at least very helpful.
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: Wheel assembly testing
Am I correct in assuming that by testing with a shock load that I'm checking the energy level rather than a force? 150g on a 0.25oz balance weight is only 2.3 lbf; that's not much.