Rim design upper limit (steel)
Rim design upper limit (steel)
(OP)
Hello
I am these days busy with designing a wheel using FEA. I use a steel where yield strength of 235 MPa and UTS of 340 MPa.
According to FEA, I see some regions with stresses above 235MPa (somewhere around 240 MPa) and those regions are moved to elastic-plastic region. In rim designs what is the strength limit usually take into account at design stage? Yield strength of 235MPa at 0 plastic strain or UTS of 340 MPa at non zero plastic strain?
Sriwardene
I am these days busy with designing a wheel using FEA. I use a steel where yield strength of 235 MPa and UTS of 340 MPa.
According to FEA, I see some regions with stresses above 235MPa (somewhere around 240 MPa) and those regions are moved to elastic-plastic region. In rim designs what is the strength limit usually take into account at design stage? Yield strength of 235MPa at 0 plastic strain or UTS of 340 MPa at non zero plastic strain?
Sriwardene





RE: Rim design upper limit (steel)
something to consider
RE: Rim design upper limit (steel)
http://www.autosteel.org/~/media/Files/Autosteel/P...
http://www.nssmc.com/en/tech/report/sm/pdf/1b01700...
http://www.prnewswire.com/news-releases/steel-begi...
http://www.gruppofrattura.it/ocs/index.php/ICF/ICF...
RE: Rim design upper limit (steel)
Jay Maechtlen
http://www.laserpubs.com/techcomm
RE: Rim design upper limit (steel)
Yield strength of 235MPa at 0 plastic strain or UTS of 340 MPa at non zero plastic strain?
RE: Rim design upper limit (steel)
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: Rim design upper limit (steel)
start with this -
http://www.halfahemi.com/pics/dragneons/MVC-010S.J...
2 laps later end up with the 1950s un-wide track look -
http://www.misterw.com/Oldsmobile/58Olds02.jpg
http://www.misterw.com/Oldsmobile/58Oldsmobile05.j...
RE: Rim design upper limit (steel)
RE: Rim design upper limit (steel)
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: Rim design upper limit (steel)
You need to preserve enough ductility for some damage tolerance (fail gracefully).
I was shopping for new wheels recently, and found that steel ones were both stronger and lighter than Al ones that I could buy.
I have seen racing Mg wheels come apart in use. Very not fun.
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Plymouth Tube
RE: Rim design upper limit (steel)
Careful examination of the suspension showed no ill affects whatsoever other than occasionally defective "o" rings in the repairable shocks
Clearly those wily French Engineers knew a thing or two about pot holed African roads, and designed the rims to serve as a "mechanical fuse"
Removing the tyre, belting the rims "straight" with a solid rubber mallet, and rebuilding the shock with new "o" rings used to take less than an hour
Of course, we sometimes held the vehicle for a day or two for disciplinary reasons, but one hour's labour and less than 5 bucks worth of "o" rings and oil was a damned economical fix
Keeping our 4 dozen GMC 3/4 ton pickups running however was far more ardurous
Tekton