Friction coefficient rubber vs paint
Friction coefficient rubber vs paint
(OP)
The rubber material is vulcanized onto mild steel plate which is welded to a subframe as part of a 45k water tank resting on the chassis of a Caterpillar 793 Off-Highway truck. This subframe carries part of the load and fixed connections support the other portion of the load.
Durometer and scale of the rubber is 70 Shore A.
The truck chassis is painted.
We need to quantify our free body diagram for stress analysis.
Anybody know where to find verifiable coeffient of friction between rubber and painted steel?
Durometer and scale of the rubber is 70 Shore A.
The truck chassis is painted.
We need to quantify our free body diagram for stress analysis.
Anybody know where to find verifiable coeffient of friction between rubber and painted steel?
Design for RELIABILITY, manufacturability, and maintainability





RE: Friction coefficient rubber vs paint
But as always, if you need to know for your specific materials and application it's best to test.
RE: Friction coefficient rubber vs paint
Luckily for you, the most common friction test for paint uses a rubber-faced sled, though if I recall correctly, it is Shore D 55-60 - a bit harder than yours.
I suggest contacting the paint manufacturer's technical rep, or their laboratory directly.
Of course, the best answer: Hire a lab to actually test your materials!
RE: Friction coefficient rubber vs paint
That helps a little but yes I can test. Been there done that. Solved a really trickty problem with a simple slope test.
COEFFICIENTS OF FRICTION (µ)
Condition Steel pulley PU lagging Rubber lagging Ceramic lagging
dry 0.35 - 0.4 0.35 - 0.4 0.4 - 0.45 0.4 - 0.45
wet (water) 0.1 0.35 0.35 0.35 - 0.4
wet (soiled) 0.05 - 0.1 0.2 0.25 - 0.3 0.35
Found at the following website:
http://www.conveyorbeltguide.com/Engineering.html
Design for RELIABILITY, manufacturability, and maintainability
RE: Friction coefficient rubber vs paint
RE: Friction coefficient rubber vs paint
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The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows.
RE: Friction coefficient rubber vs paint
Test completed and I do not know how we could get a more valid test (one valid test is worth a thousnd expert opinions).
A piece of the actual steel backed rubber "skirtboard" was used for the test sample and a 1/8" steel sheet painted with Caterpillar Yellow for the contact surface. This goes onto a Cat Truck.
Angle of repose measures 36.6 degrees
∴ f = tan 36.6⁰ = 0.743
Thanks for all of you input.
Design for RELIABILITY, manufacturability, and maintainability
RE: Friction coefficient rubber vs paint
RE: Friction coefficient rubber vs paint
We now return you to our regularly scheduled program.
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The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows.