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Portion of a tire that is in contact with the road
The contact patch is the portion of a vehicle's tire that is in actual contact with the road surface. It is commonly used in the discussion of pneumatic
Contact_patch
Inflammation from allergen or irritant exposure
of allergic contact dermatitis can often be supported by patch testing. Metanalysis of research on the incidence and prevalence of contact dermatitis suggests
Contact_dermatitis
Study of the deformation of bodies in the presence of frictional effects
tractions in the contact patch. In 1967, Joost Jacques Kalker published his milestone PhD thesis on the linear theory for rolling contact. This theory is
Frictional_contact_mechanics
Ring-shaped covering around a wheel's rim
rough features on the surface. Tires provide a footprint, called a contact patch, designed to match the vehicle's weight and the bearing on the surface
Tire
Science behind the motion of bicycles and motorcycles
more lean is required. This balances the roll torque about the wheel contact patches generated by centrifugal force due to the turn with that of the gravitational
Bicycle and motorcycle dynamics
Bicycle_and_motorcycle_dynamics
Inflammation of the skin due to contact with an allergen
Allergy, Asthma, and Immunology, "patch testing is the gold standard for contact allergen identification". The patch test consists of applying small quantities
Allergic_contact_dermatitis
Electrical resistance attributed to contacting interfaces
asperities to penetrate the oxide layer, forming metal-to-metal contact patches. If a contact patch is sufficiently small, with dimensions comparable or smaller
Contact_resistance
Loss of traction due to water buildup under tires
clearing water. Tire tread aspect ratio: The longer and thinner the contact patch, the less likely a tire will aquaplane. tires that present the greatest
Aquaplaning
Angle between the vertical axis and the steering axis of a steered wheel, in side view
it intersects the road surface slightly ahead of the center of the contact patch of the tire on the pavement by a distance called trail. The purpose
Caster_angle
Term or maneuver in vehicle dynamics
cornering force, which is in the plane of the contact patch and perpendicular to the intersection of the contact patch and the midplane of the wheel. This cornering
Slip_angle
Rubber on the circumference of a tire that contacts the ground
dry weather use will be designed with minimal pattern to increase the contact patch. Tires with a smooth tread (i.e., having no tread pattern) are known
Tire_tread
Deformation mechanism
small contact patch that leads to very high contact pressure between the rail and wheel. Over time, the repeated passing of wheels with high contact pressures
Rolling_contact_fatigue
Principle of automotive steering and handling
distance in front view between the king pin axis and the center of the contact patch of the wheel, where both would theoretically touch the road. It can
Scrub_radius
Topics referred to by the same term
Look up patch in Wiktionary, the free dictionary. Patch, Patches or The Patch may refer to: "Patches" (Chairmen of the Board song), 1970, also covered
Patch
Suspension system for a vehicle
the vehicle by the road or ground are transmitted through the tires' contact patches. The suspension also protects the vehicle itself and any cargo or luggage
Car_suspension
Force produced by a vehicle tire during cornering
Slip angle describes the deformation of the tire contact patch, and this deflection of the contact patch deforms the tire in a fashion akin to a spring
Cornering_force
Undriven wheel that is designed to be attached to the bottom of a larger object
with more ground contact area. However, when rotating a wide swivel caster in-place, the center part of the wheel-to-ground contact patch rotates slower
Caster
Angle between a wheel's vertical axis and the vehicle's vertical axis
applying negative camber, which turns the contact surface of the tire outwards to match, maximizing the contact patch area. Note that this is only true for
Camber_angle
Railway relying on adhesion to move trains
between the wheels and rails occurs in the wheel–rail interface, or contact patch. The traction force, the braking forces and the centering forces all
Adhesion_railway
Wheel designed for railway tracks
Procedures. CRC Press. ISBN 978-0-203-84812-8. "Book: The Contact Patch". the-contact-patch.com. Retrieved 29 October 2020. Richard Feynman (1983). Feynman:
Train_wheel
Type of roller bearing which can support axial loads
creates a linear contact patch which permits greater loads to be carried than with spherical (ball) bearings, which have point contact. The geometry means
Tapered_roller_bearing
Motorcycle calamity
occur at the contact patch through friction and normal forces. There is a limited amount of force tangential to the road that the contact patch can transmit
Highsider
Study of heat conduction between solid bodies
interfaces is analogous to the concept of electrical contact resistance, also known as ECR, involving contact patch restricted transport of phonons rather than
Thermal_contact_conductance
Tire air pressure control system
different surfaces. Lowering the air pressure in a tire creates a larger contact patch between the tire and the ground, and makes driving on softer ground
Central_tire_inflation_system
Medical test to determine substances causing allergic reactions
planted. The chemicals included in the patch test kit are the offenders in approximately 85–90 percent of contact allergic eczema and include chemicals
Patch_test
Dutch automotive engineer
10–20 coefficients for each important force that it can produce at the contact patch, typically lateral and longitudinal force, and self-aligning torque
Hans_B._Pacejka
Type of motorcycle crash
steering) are transmitted by friction in the contact patches. There is a limited amount of force each contact patch can transmit before the tire begins to slide
Lowsider
Representation of the slipping behavior of an automobile wheel
caused by actual sliding taking place between the road and the tire's contact patch is negligible in magnitude and thus does not in practice make slip ratio
Slip_ratio
Wheel manufacturing company based in California, United States
interlocking rings are based on sine wave patterns, which create a thinner contact patch with the pavement compared to a conventional wheel of the same width
Shark_Wheel
Change in wheel load or center of mass in a vehicle
suspension vertical travel and also due to deformation of the tires i.e. contact patch displacement relative to wheel. Lowering the CoM towards the ground
Weight_transfer
Computer racing simulator
updates. In November 2014, a new build was released with a new tire contact patch physics, although it wasn't yet applied to any car. Among the free content
RFactor_2
Motion between surfaces
{\displaystyle r_{e}} is the effective radius from the hub to the center of the contact patch, and v x {\displaystyle v_{x}} is the tire's forward velocity. The numerator
Slip_(vehicle_dynamics)
Device securing a tire bead to a wheel
tire pressure to cause the tread to spread out and create a larger contact patch. This practice can create a safety hazard, as there may not be enough
Beadlock
Offset in tire force application point
center of the contact patch. Pneumatic trail is caused by the progressive build-up of lateral force along the length of the contact patch, such that lateral
Pneumatic_trail
Roller-based continuously variable transmission
perpendicular to the contact patch plane. It is caused by the relative difference in surface speeds of both elements across the contact patch and is a major
NuVinci continuously variable transmission
NuVinci_continuously_variable_transmission
Bicycle tube valve
valve Attributes Camber thrust Circle of forces Cold inflation pressure Contact patch Cornering force Ground pressure Pacejka's Magic Formula Pneumatic trail
Presta_valve
Pressure exerted on the ground by the tires or tracks of a motorized vehicle
pressure for a pneumatic tire is roughly equal to its inflation pressure. Contact patch Tire load sensitivity Theory of Ground Vehicles Allen, Jim. Jeep 4 X
Ground_pressure
Type of tire used in auto racing
grooves cut into the tread, such tyres provide the largest possible contact patch to the road, and maximize dry traction for any given tyre dimension
Racing_slick
Auto term for positioning of a vehicle
for better handling characteristics as the negative camber keeps the contact patch of the tire perpendicular to the road when going through turns with
Stance_(vehicle)
Single-track vehicle steering technique
generate forces in the contact patch to the left. The machine as a whole steers to the left. Because the forces in the contact patch are at ground level
Countersteering
Force from tire camber angle
direction of travel of a rolling tire due to its camber angle and finite contact patch. Camber thrust is generated when a point on the outer surface of a leaned
Camber_thrust
Process to improve rubber's traction
and so the tires had poor wet grip anyway, owing to their limited contact patch. It was his son, Harry E. Sipe, who popularised the use of sipes in
Siping_(rubber)
Tire that fits on the wheel of a bicycle
given tire is mounted has an influence on the size and shape of the contact patch, and possibly the rolling resistance and handling characteristics. The
Bicycle_tire
Formula One race car campaigned 1976-1977
design it was 10 inches (250 mm) in diameter. This had too small a contact patch to offer reasonable cornering performance, which led to the use of four
Tyrrell_P34
Engineering ratio
absorbers. The force in the spring is (roughly) the vertical force at the contact patch divided by the motion ratio, and the spring rate is the wheel rate divided
Motion_ratio
deformations in the road surface upon which the wheel runs. When the contact patch of the tire does not form to match the contours of the road surface
Groove_wander
Tyres of a motorcycle
allowing the motorcycle to turn via countersteering. The two tyres' contact patches are the motorcycle's connection to the ground, and so are fundamental
Motorcycle_tyre
Motor vehicle and bicycle tube valve
valve Attributes Camber thrust Circle of forces Cold inflation pressure Contact patch Cornering force Ground pressure Pacejka's Magic Formula Pneumatic trail
Schrader_valve
Force resisting the motion when a body rolls on a surface
surface. Consider a particle that enters the contact area at the right side, travels through the contact patch and leaves at the left side. Initially its
Rolling_resistance
Inflammation of the skin due to contact with an irritant
negative allergic patch testing is usually necessary to reach a correct diagnosis. The simplest form of physical irritant contact dermatitis results
Irritant_contact_dermatitis
Type of mountain bike
tire contact patch size and shape. All else being equal, such as tire width, rim width, inflation pressure and rider weight, the contact patch of a 29″
29er_(bicycle)
Bolt-action rifle
exclusive to higher end rifles. The trigger force, take-up, and break (sear contact patch area) are all adjustable via two threaded nuts and a set screw. The
Norinco_JW-103
Torque aligning tire to travel direction
be calculated as the product of the lateral force generated at the contact patch and the distance behind the wheel centre at which that force acts. This
Self_aligning_torque
Specialized metal tool used in working with tires
valve Attributes Camber thrust Circle of forces Cold inflation pressure Contact patch Cornering force Ground pressure Pacejka's Magic Formula Pneumatic trail
Tire_iron
Type of sports equipment similar to skateboard
harder wheels on any surface. The contact patch of a wheel is the width of the section of the wheel that makes contact with the road. Generally, the wider
Longboard_(skateboard)
Automotive concept
contributes play and friction. Caster—offset of the steering axis from the contact patch—provides some of the self-centering tendency. Precision of the steering
Automobile_handling
Bicycle tube valve
valve Attributes Camber thrust Circle of forces Cold inflation pressure Contact patch Cornering force Ground pressure Pacejka's Magic Formula Pneumatic trail
Dunlop_valve
Tyres designed for Formula One cars
14 mm (0.55 in) grooves, the front tyres gained proportionally larger contact patch. In 2010, the front tyres were narrowed from 270 mm (11 in) to 245 mm
Formula_One_tyres
Standards for passenger car tires
increases, the tire deforms more and tread elements near the rear of the contact patch with the road begin to slip rather than grip. The coefficient of friction
Uniform_Tire_Quality_Grading
Ammunition type
increasing the surface area of contact for the explosive: the faster the spin, the larger the resultant contact patch. HESH shells are not specifically
High-explosive_squash_head
American doll brand
out of business. After changing the dolls' name to Cabbage Patch Kids, Schlaifer contacted all the major doll companies in the country. Most declined
Cabbage_Patch_Kids
Type of simulation in vehicle dynamics
Core Intel Xeon E5 (2014, 22 nm process, about $2000), with 900 contact road/contact patch elements, a sample frequency of 4.0 kHz including thermal and
Tire_model
Mark left by any solid which moves against another
absent. Loss of the rubber feet or foot causes the aluminum stile to make contact with the ground, and if a hard surface like concrete or tiling, a skid
Skid_mark
Motorsport championship held worldwide
and produce racing similar to rainy conditions by enforcing a smaller contact patch between the tyre and the track. No driver died of injuries sustained
Formula_One
Force used to generate motion between a body and a tangential surface
rubber. Traction also varies with contaminants. A layer of water in the contact patch can cause a substantial loss of traction. This is one reason for grooves
Traction_(mechanics)
Main pivot in a steering mechanism, or part of the fifth wheel coupling for a semi truck
radius of the steered wheel, the distance between the centre of the tyre contact patch and where the kingpin axis intersects the ground. If these points coincide
Kingpin_(automotive_part)
Range of motorcycles
reducing the gyroscopic effect and shortening/widening the front tyre contact patch. On the road the 16" wheel proved unpopular and quickly fell out of
Suzuki_GSX_series
Unintentional steering by engine torque
Torque steer is directly related to differences in the forces in the contact patches of the left and right drive wheels. The effect becomes more evident
Torque_steer
Outer part of a wheel on which the tire is mounted
concentrating tire wear in a very small area during cornering, with a smaller contact patch during braking. On bicycles, the optimum tire width is about 1.8 times
Rim_(wheel)
Study of vehicle motion and how it changes
directly to the tires. These include: Camber thrust Circle of forces Contact patch Cornering force Ground pressure Pacejka's Magic Formula Pneumatic trail
Vehicle_dynamics
Automotive axle
pinion is significantly stronger with a better pinion to ring gear tooth contact patch and angle. It was typically used in the back of jeep JKs, Isuzus and
Dana_44
Vehicle maneuver
{\displaystyle x_{2}} and y 1 {\displaystyle y_{1}} are distance from rear wheel contact patch to center of mass, a x {\displaystyle a_{x}} is horizontal acceleration
Wheelie
Automotive independent suspension design
change in the camber of the vehicle as it rolls, which helps to keep the contact patch square on the ground, increasing the ultimate cornering capacity of
Double_wishbone_suspension
Mass distribution in an automobile tire
valve Attributes Camber thrust Circle of forces Cold inflation pressure Contact patch Cornering force Ground pressure Pacejka's Magic Formula Pneumatic trail
Tire_balance
Danish race car manufacturer
focus on reducing the car's center of gravity in order to utilise the contact patch as much as possible, reducing the wear on tires and brake pads. The
Aquila_Racing_Cars
Deflated pneumatic tire
not patch a worn tire if: the hole is close to a previous patch; there are already more than two patches; the puncture requires more than two patches; the
Flat_tire
Property of pneumatic tires
valve Attributes Camber thrust Circle of forces Cold inflation pressure Contact patch Cornering force Ground pressure Pacejka's Magic Formula Pneumatic trail
Relaxation_length
Laboratory technique in electrophysiology
The patch clamp technique is a laboratory technique in electrophysiology used to study ionic currents in individual isolated living cells, tissue sections
Patch_clamp
Inflation pressure of tires before a car is driven
valve Attributes Camber thrust Circle of forces Cold inflation pressure Contact patch Cornering force Ground pressure Pacejka's Magic Formula Pneumatic trail
Cold_inflation_pressure
Video game genre
a dynamic tire model that simulated the tire's carcass, tire tread, contact patch, and heat transfer. This model, called "Seta", replaced the steady-state
Sim_racing
Category of vehicle tire with deep tread
their maximum grip on loose surfaces, but on paved surfaces the smaller contact patch affords less traction as compared to street tires. Tires with less aggressive
Off-road_tire
Type of valve
valve Attributes Camber thrust Circle of forces Cold inflation pressure Contact patch Cornering force Ground pressure Pacejka's Magic Formula Pneumatic trail
Valve_stem
kingpin to pivot about a pivot point nearer the center of the wheel's contact patch instead of the traditional pivot point at the ball joint of the bottom
Dual_pivot_steering_geometry
Area of bare skin on the underside of nesting birds
characteristic side to side manner to ensure full contact of the brood patch with eggs or young. Brood patch can help regulate number of eggs produced in one
Brood_patch
Collection of key measurements that define a particular bike configuration
ISBN 9788493328634. Retrieved 18 October 2013. the distance between the ground contact patch and the steering axis as measured at right angles to that axis. The
Bicycle and motorcycle geometry
Bicycle_and_motorcycle_geometry
Additional tire carried in a motor vehicle as a replacement for one that fails
required the motorist to remove the wheel from the car, demount the tire, patch the inner tube, re-mount the tire, inflate the tire, and re-mount the wheel
Spare_tire
Bicycle sport
diameter wheel can roll over obstacles better and offers a greater tire contact patch, but also results in a longer wheelbase, making the bike less agile
Mountain_biking
British sports car
aluminium forged wheels wrapped in Pirelli P Zero Corsa tyres having wider contact patch than the previous versions for improved grip. In order to improve ride
McLaren_650S
Bracket used to provide support to rotating shafts
bearing over the end of the shaft. For very heavy loads, the smaller contact patches of ball or roller bearings would be under excessive pressure, and plain
Pillow_block_bearing
Reuse of waste tires
valve Attributes Camber thrust Circle of forces Cold inflation pressure Contact patch Cornering force Ground pressure Pacejka's Magic Formula Pneumatic trail
Tire_recycling
Study and modification of the noise and vibration characteristics of vehicles
wind, cooling fans of HVAC) Mechanical (e.g., engine, driveline, tire contact patch and road surface, brakes) Electrical (e.g., electromagnetically induced
Noise, vibration, and harshness
Noise,_vibration,_and_harshness
Medical condition
Allergic contact dermatitis presents similar signs and symptoms that can be differentiated from lip licker's dermatitis with an allergy patch skin test
Lip_licker's_dermatitis
Device used to join electrical conductors
layers and surface adsorbates, which limit metal-to-metal contact patches and contribute to contact resistance. For example, copper alloys have favorable
Electrical_connector
Type of pressure gauge
valve Attributes Camber thrust Circle of forces Cold inflation pressure Contact patch Cornering force Ground pressure Pacejka's Magic Formula Pneumatic trail
Tire-pressure_gauge
Measure of mechanical advantage in bicycle gears
tyre and rim together: the vertical deflection of the tire above the contact patch and the difference between the manufacturer's stated size and the actual
Gear_inches
Point in vehicle dynamics
practical equivalent of the above is to push laterally at the tire contact patch and measure the ratio of the change in vertical load to the horizontal
Roll_center
Electronic system in vehicles
products are indeed compatible, but others warn that the "sealant may come in contact with the sensor in a way that renders the sensor temporarily inoperable
Tire-pressure monitoring system
Tire-pressure_monitoring_system
Device featuring a number of jacks for connecting and routing circuits
via patch cords and patch panels, like the jack fields of cord-type telephone switchboards. Patch panels are also referred to as patch bays, patch fields
Patch_panel
Mechanical power transmission by friction between components
of torque that can be transferred is a function of the area of the contact patch between the two members and the pressure applied to it by the two parts
Friction_drive
Medical condition
the skin at an area that comes into regular contact with nickel. This often takes the form of a reddened patch of skin with raised bumps (papules) or small
Nickel_allergy
CONTACT PATCH
CONTACT PATCH
Girl/Female
Arabic
Sensible Contact
Boy/Male
Celtic Irish
Wise.
Girl/Female
Tamil
Content
Boy/Male
English Latin
Steady; stable.
Surname or Lastname
Irish (Connacht)
Irish (Connacht) : reduced Anglicized form of Gaelic Ó LáimhÃn, a reduced form of Ó FlaithimhÃn ‘descendant of FlaithimhÃn’, a personal name from a diminutive of flaith ‘prince’, ‘ruler’. This name is sometimes translated Hand, from the similarity of the reduced form to lámh ‘hand’.English : from the medieval female personal name Lavin(a) (from Latin Lavinia, of unknown origin)Spanish (LavÃn) : habitational name from Lavin, a place so named in the Santander province.Respelling of French Lavigne.
Boy/Male
Australian, British, English, French, Russian
Eye Contact; Clean Sight
Boy/Male
Tamil
Constant
Girl/Female
Spanish Italian
Constant.
Surname or Lastname
English
English : from an Old Breton personal name, derived from an element meaning ‘high’, ‘mighty’, which was introduced into England by followers of William the Conqueror and subsequently into Ireland, where it still has some currency as a personal name.Scottish : habitational name from a place in Kincardineshire. The place name is of uncertain origin, possibly from an early Celtic name, Conona ‘hound stream’.Roger Conant led a secession from Plymouth colony in about 1627 and founded the settlement that became Salem, MA. He was probably the son of Christopher Connant, who came over from England aboard the Anne in 1623.
Boy/Male
Australian, Celtic, Irish
Wise; Hound; Wolf; High
Girl/Female
Irish
Constant.
Girl/Female
Irish
Constant.
Boy/Male
Tamil
Content
Boy/Male
Australian, Irish
Brave; Wise
Boy/Male
Tamil
Nityagopal | நிதà¯à®¯à®•ோபாலÂ
Constant
Nityagopal | நிதà¯à®¯à®•ோபாலÂ
Girl/Female
Tamil
Constant
Girl/Female
Indian
Constant
Boy/Male
Indian
Constant
Boy/Male
Irish
Brave or wise.
Surname or Lastname
French and English
French and English : from a medieval personal name (Latin Constans, genitive Constantis, meaning ‘steadfast’, ‘faithful’, present participle of the verb constare ‘stand fast’, ‘be consistent’). This was borne by an 8th-century Irish martyr. This surname has also absorbed some cases of surnames based on Constantius, a derivative of Constans, borne by a 2nd-century martyr, bishop of Perugia. Compare Constantine.English : perhaps also a nickname from Old French constant ‘steadfast’, ‘faithful’.
CONTACT PATCH
CONTACT PATCH
Girl/Female
Indian
Lots of Love
Girl/Female
Hindu, Indian, Kannada, Sanskrit, Telugu, Traditional
A Bud of Champa
Girl/Female
Tamil
Seven stars representing seven great saints
Boy/Male
Spanish
Receiver of life from Zeus.
Female
Welsh
Welsh form of Latin Viatrix, BETRYS means "voyager (through life)."
Male
French
French form of Latin Amadeus, AMÉDÉÉ means "to love God."
Boy/Male
Tamil
Kabalikruta | கபலீகரதா
One who swallowed the Sun
Boy/Male
Indian
Prime
Male
Hebrew
Variant spelling of Hebrew Shabbath, SHABAT means "rest, Sabbath."
Boy/Male
Australian, Portuguese
Free Man; Masculine
CONTACT PATCH
CONTACT PATCH
CONTACT PATCH
CONTACT PATCH
CONTACT PATCH
v. t.
To conduct safely; to give safe-conduct to.
n.
A close union or junction of bodies; a touching or meeting.
v. i.
To join, unite, or cohere; to have a close relation; as, one line of railroad connects with another; one argument connect with another.
n.
An expression of assent to a bill or motion; an affirmative vote; also, a member who votes "Content.".
v. t.
To set in opposition, or over against, in order to show the differences between, or the comparative excellences and defects of; to compare by difference or contrariety of qualities; as, to contrast the present with the past.
v. t.
To unite or connect firmly, as in a system.
v. i.
To be drawn together so as to be diminished in size or extent; to shrink; to be reduced in compass or in duration; as, iron contracts in cooling; a rope contracts when wet.
n.
The plane between two adjacent bodies of dissimilar rock.
n.
To bring on; to incur; to acquire; as, to contract a habit; to contract a debt; to contract a disease.
n.
The agreement of two or more persons, upon a sufficient consideration or cause, to do, or to abstain from doing, some act; an agreement in which a party undertakes to do, or not to do, a particular thing; a formal bargain; a compact; an interchange of legal rights.
n.
An agreement between parties; a covenant or contract.
v. i.
To conduct one's self; to behave.
n.
To lead, as a commander; to direct; to manage; to carry on; as, to conduct the affairs of a kingdom.
v. i.
To make an agreement; to covenant; to agree; to bargain; as, to contract for carrying the mail.
n.
One who keeps a constant watch of the conduct of others.
p. p. & a
Brief; close; pithy; not diffuse; not verbose; as, a compact discourse.
n.
The property of two curves, or surfaces, which meet, and at the point of meeting have a common direction.
n.
To draw together or nearer; to reduce to a less compass; to shorten, narrow, or lessen; as, to contract one's sphere of action.
v. t.
To prepare from crude materials, as food; to invent or prepare by combining different ingredients; as, to concoct a new dish or beverage.
a.
Contracted; as, a contract verb.