analyse brake disc with brake pad friction as "restraint"
analyse brake disc with brake pad friction as "restraint"
(OP)
Hello guys,
i want to analyse a brakedisc loaded with brake torgue, using the actual pad contact area as the "restraint".
Do you agree this is a decent approach?
-------------------------------------------------------
setup:
- wheel bearing
- brakedisc bounded to wheelbearing
- wheel hub bounded to brakedisc
- brakepads on both sides of disc
- piston on backside of each pad
(brakedisc is sandwitched between bearing and hub)
restraints:
- wheelbearing surface free to rotate, no translation
- brakepads free to translate in one direction, fixed in remaining directions(floating caliper)
loads:
- force on pistons
- torgue on circumference of wheelhub(via the wheelrim)
p.s. where appropriate friction is implemented
----------------------------------------------------
Thank you all for your help,
greatly appreciated.
i want to analyse a brakedisc loaded with brake torgue, using the actual pad contact area as the "restraint".
Do you agree this is a decent approach?
-------------------------------------------------------
setup:
- wheel bearing
- brakedisc bounded to wheelbearing
- wheel hub bounded to brakedisc
- brakepads on both sides of disc
- piston on backside of each pad
(brakedisc is sandwitched between bearing and hub)
restraints:
- wheelbearing surface free to rotate, no translation
- brakepads free to translate in one direction, fixed in remaining directions(floating caliper)
loads:
- force on pistons
- torgue on circumference of wheelhub(via the wheelrim)
p.s. where appropriate friction is implemented
----------------------------------------------------
Thank you all for your help,
greatly appreciated.






RE: analyse brake disc with brake pad friction as "restraint"
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: analyse brake disc with brake pad friction as "restraint"
i researched certain SAE reports for these value's, as a guideline.
To simulate a semi-metallic pad, i used an E 1/10 and a G 1/8 compaired to steel. To simplify somewhat i assumed the pad material to be isotrophic(which it's not).
I did a quick displacement study and simply loaded one pad with the piston forces. The pad compressed approx. 3/100 mm at piston location(@ max. brake pressure).
To Greg or others,
do you think the isotrophic assumption for the pad material is ok?
to Greg, thanks!