Tire Cornering Force Test Method for Winter Surfaces

Shoop, Sally A.; Coutermarsh, Barry A.

doi:10.4271/2006-01-1627

Cited by 7 publications

(7 citation statements)

References 4 publications

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“…The wet snow in 2006 was from a naturally occurring warm snowfall in early March. [4] shows typical raw data plots of lateral coefficient of friction versus slip angle which can be noisy due to the tire either dragging on the packed surfaces or forcing through the built up snow under and around the tire. For our analysis the raw data was smoothed through a 300 point moving average.…”

Section: Test Conditionsmentioning

confidence: 99%

“…The technique is best limited to slow speed [4]. This paper will present data from new snow conditions and compare and discuss trends between the two data sets.…”

Section: Introductionmentioning

confidence: 94%

“…A more in depth description of the towing rig and the 2005 tests can be found in Shoop and Coutermarsh [4]. A test was initiated by pulling the CIV forward with the front tires centered.…”

Section: Test Vehicle Configuration and Proceduresmentioning

confidence: 99%

“…Thus there are few published measurements of tire lateral forces on snow and ice [1,2,4] and the techniques employed vary with the resourcefulness of the testers. Instrumented vehicles [3] are frequently used in these measurements.…”

Section: Introductionmentioning

confidence: 98%

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Tire slip-angle force measurements on winter surfaces

Coutermarsh

Shoop

2009

Journal of Terramechanics

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Section: Test Conditionsmentioning

confidence: 99%

“…The technique is best limited to slow speed [4]. This paper will present data from new snow conditions and compare and discuss trends between the two data sets.…”

Section: Introductionmentioning

confidence: 94%

“…A more in depth description of the towing rig and the 2005 tests can be found in Shoop and Coutermarsh [4]. A test was initiated by pulling the CIV forward with the front tires centered.…”

Section: Test Vehicle Configuration and Proceduresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

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Tire slip-angle force measurements on winter surfaces

Coutermarsh

Shoop

2009

Journal of Terramechanics

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“…The longitudinal surface traction coefficient is measured by driving with the front tires while the vehicle is being braked by the freewheeling rear tires (driving traction). The lateral surface traction coefficient is measured by briefly connecting the CIV to a tow rig and pulling the CIV longitudinally while turning the tires to induce a lateral resisting force (Shoop and Coutermarsh 2006). The rolling resistance is measured by free-wheeling the front tires and driving the rear tires.…”

Section: Driving Surfacesmentioning

confidence: 99%

Loose-Surface Tire-Terrain Interaction During High-Speed Maneuvers

Buck¹,

Coutermarsh²,

Shoop³

2010

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Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Washington Headquarters Services, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to a penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. Laboratory has been working with rally-car drivers to gain a more complete understanding of their driving techniques and their knowledge of driving on loose surfaces. A more complete understanding of the interaction of the tire-surface interface is also needed. This study was designed to quantify anecdotal descriptions of dynamic changes in the road surface as a result of successive high-speed maneuvers on a loosesurface roadway. The two primary maneuvers tested both involve a controlled skid on unpaved surfaces: the straight-line brake and highspeed hard turn. Multiple tests of each maneuver were completed over the same section of roadway on two different types of loose surface. Test observations showed that, as a vehicle traverses a section of roadway in a controlled skid, the tires remove loose material and transport the material to a new location; thereby changing the tractive characteristics of the roadway. This change is amplified as successive vehicles traverse the same path. A significant increase in the surface traction coefficient is observed where material has been removed from the original surface, and a decrease in surface traction is observed where loose material has built up on the original surface.

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Lateral Force versus Tire Angle Measurements for Various Field Conditions

Coutermarsh¹,

Shoop²

2010

SAE Technical Paper Series

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Tire Cornering Force Test Method for Winter Surfaces

Cited by 7 publications

References 4 publications

Tire slip-angle force measurements on winter surfaces

Tire slip-angle force measurements on winter surfaces

Loose-Surface Tire-Terrain Interaction During High-Speed Maneuvers

Lateral Force versus Tire Angle Measurements for Various Field Conditions

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