Thanks for your help guys...there is no slipping in the setup , the load on the wheel is equal to the load due to friction and I did take the roller-wheel ratio correctly...the problem was with the load measuring device...it was displaying a value off by a factor of 132 ! ... I was surprised...
ok...so the torque measured by the braking mechanism will be related to the torque at wheels by the ratio of roller radius to wheel radius...thats what i initally did...but the torque measured seems to be too low a value to deem it acceptable...that is why i wanted to investigate whether i was...
well that is basically the problem i am trying to model...(chassis dynamometer) i have the wheels of the car on rollers (disc on disc) ... the car is maintained at a particular throttle position (constant power) ...the wheels of the car cause the rollers to rotate...the shaft on which the...
ok...just a doubt...in the above equation (case where slipping occurs)...suppose one disc is being driven by a constant power source...then the torque acting on that disc will be Ff x R1 and the angular velocity will be constant power supplied divided by the torque...and the torque transferred...
thanks for the equation ... but how can we ensure whether the disc are slipping on each other or not? (apart from visible slipping ... i.e. if the slip is not as significant to be perceived on sight but is significant enough when compared to the torque transferred?
This is a typical case of friction wheels where one wheel drives the other...what I want to know is how can we model the problem when slipping occurs ... also in case of no slipping how will the free body diagrams and forces be balanced on both disc?