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Flat Surface Tire Dynamics
 Smithers' flat
surface tire dynamics machine provides low speed and static
measurements on tires and wheels in a laboratory environment. Tires
ranging in size from small aircraft and passenger car to medium and
wide-base truck can be tested at loads of up to 10,000 lb. (45 k-N).
Load, slip angle, and speed can all be precisely controlled.
Flat Surface Tire Dynamics Machine (FSTDM)
- Truck tire force and moment
- Passenger and truck tire footprint mechanics
- Footprint stresses
- Footprint motion
- Footprint energy
- Tire static vertical, lateral, and longitudinal stiffnesses
- Tire relaxation length
- Low speed glass plate visualization
- Low speed truck tire uniformity
Many additional experimental mechanics tests are possible
- Unusual road surfaces: cleats, surface discontinuities, grooved
road
- Special mounting for virtually any size tire from chair-caster
size up to 425 mm in width and 47" in diameter
- Tests on instrumented wheels and tires
- Rim stress studies
- Tire cord stress studies
- Pavement damage studies
- Swiveling casters
- Parking forces
Available data includes:
- Stresses and motions
in the tire footprint
- Tire forces and
moments
- Glass plate
visualization
- Lateral, longitudinal,
and vertical spring rates
- Customized tests,
including force development versus distance rolled, bead/rim interface
pressures, etc.
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