the-contact-patch.com Report : Visit Site


  • Ranking Alexa Global: # 8,769,240

    Server:lighttpd/1.4.35...

    The main IP address: 139.162.233.123,Your server United States,- ISP:Linode  TLD:com CountryCode:US

    The description :we use cookies on this website to maintain your browsing session and to improve the ways you use it. you can choose what types of cookies you consent to on this site via your cookie settings . otherwi...

    This report updates in 04-Nov-2018

Created Date:2011-05-31
Changed Date:2015-04-15

Technical data of the the-contact-patch.com


Geo IP provides you such as latitude, longitude and ISP (Internet Service Provider) etc. informations. Our GeoIP service found where is host the-contact-patch.com. Currently, hosted in United States and its service provider is Linode .

Latitude: 40.71427154541
Longitude: -74.005966186523
Country: United States (US)
City: -
Region: -
ISP: Linode

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HTTP Header Analysis


HTTP Header information is a part of HTTP protocol that a user's browser sends to called lighttpd/1.4.35 containing the details of what the browser wants and will accept back from the web server.

X-Xss-Protection:1
X-Content-Type-Options:nosniff
Transfer-Encoding:chunked
Set-Cookie:_s=7c51178970871e93cd41b81559826ba03aa57a43; Path=/; HttpOnly
Server:lighttpd/1.4.35
Pragma:no-cache
Cache-Control:no-cache, no-store, must-revalidate
Date:Sun, 04 Nov 2018 13:27:09 GMT
X-Frame-Options:SAMEORIGIN
Content-Type:text/html; charset=utf-8

DNS

soa:a.ns.joker.com. hostmaster.joker.com. 2018100351 10240 7200 1209600 3600
ns:a.ns.joker.com.
b.ns.joker.com.
c.ns.joker.com.
ipv4:IP:139.162.233.123
ASN:63949
OWNER:LINODE-AP Linode, LLC, US
Country:NL

HtmlToText

we use cookies on this website to maintain your browsing session and to improve the ways you use it. you can choose what types of cookies you consent to on this site via your cookie settings . otherwise, if you're happy to consent to all cookies we use you can accept and carry on . you can modify your cookie settings at any time via the cookie settings link at the bottoms of the page. more information about how we handle personal data can be found in our privacy policy . contact patch transport technology from the ground up general g.3000-0119 road c.3000-0018 rail r.3000-0018 marine aerospace map g.3000 introduction g.2116 the laws of friction g.1619 hysteresis losses in rolling wheels g.1615 bearings g.1209 the wheel g.1115 smoothing the ride g.1114 suspension g.0816 braking g.0216 passengers in motion g.0119 rolling resistance c.3000 a barrel of fireworks c.2020 the contact patch c.2015 a simple model for tyre deformation c.2009 dynamic load transfer c.1717 grip c.1610 rubber tyres c.1603 the road surface c.1602 the pavement structure c.1508 arranging the wheels c.1416 aerodynamic forces c.1405 front wheel set-up c.1114 suspension systems c.0816 stopping c.0505 steering c.0504 ackermann geometry c.0418 oversteer and understeer c.0415 cornering basics c.0414 roll c.0018 driving r.3000 introduction r.2020 rolling contact r.1717 friction between wheel and rail r.1610 the wheelset r.1605 the steel rail r.1604 track alignment r.1603 turnouts r.1602 the roadbed r.1416 aerodynamics and the moving train r.1412 track behaviour r.1114 railway suspension r.0816 railway brakes r.0418 hunting r.0415 curving r.0410 tilting trains r.0314 off the rails r.0204 train formation r.0018 driving a train previous chapter g.3000 next chapter: c.3000 g.3000 introduction as children we are fascinated by anything that goes round: a spinning top, a bicycle wheel, or even an old-fashioned gramophone record on its turntable. the magic fades as we grow older and become used to the wheel as a part of everyday life. but do we understand how it works? at one level, the motion is simple, but as we look more deeply into the matter, some curious features emerge. for example, in school physics, the wheel is pictured as a rigid circular disk rolling along a flat surface like a coin on a marble slab. the slab is smooth and hard and the rim is narrow, so at any given moment, the wheel is supported at a single point. this is a useful model for some purposes, but since no part of the wheel touches the slab for a finite period of time, it doesn’t explain how the wheel ‘knows’ which direction it is supposed to be rolling in ( figure 1 ) . nor does it represent what actually happens. figure 1 coin rolling along a marble slab carrying a load a real wheel carries a load, however small. the load passes through the rim into the slab, and if the area in contact with the slab were infinitesimally small, the stress, which is equal to the force divided by the contact area, would be infinite. no material can withstand infinite stress: it must deform or break. so locally, the shape of the wheel and shape of the slab must change ( figure 2 ) . the idea of a perfectly circular wheel running on a perfectly flat surface exists only in the imagination. figure 2 the wheel and surface must deform the wheel at work for example, the wheels on a car have squashy rubber tyres. each presses down on the road over an area about the size of your hand. this area - the contact patch - bridges across chippings in the road surface that would otherwise rattle the springs, and contrary to the classical laws of friction, a large contact patch grips the road better than a small one. consequently, the pneumatic tyre helps to smooth out the ride and keep the car on the road. without it, road travel at present-day speeds would be intolerable. in fact, the rubber tyre generates two distinct kinds of friction. one is the conventional kind that stops your tea-plate skidding across the table when you pick up your toast: the molecules on the underside of your plate form temporary bonds with those on the table top. the other is less obvious because it only works when the tyre is moving relative to the road surface. on a dry road, both are present, but when it rains and a water film covers the road surface, the conventional friction all but disappears and we are left with something called hysteresis grip . as you might imagine, with two friction processes taking place simultaneously, the question of how tyres grip the road and exactly what happens within the area of the contact patch when the driver steers round a curve or applies the brakes turns out to be quite complicated. the rubber doesn’t simply ‘stick’ to the road, but creeps along the surface, draping itself over the stones that project from the asphalt. because of the relative motion, the stones plough through the rubber, and in fact towards the rear of the contact patch, the relative motion increases sharply and there is a well-defined area of slip ( figure 3 ) . figure 3 contact patch between a rubber tyre and the road railway wheels grip the rail in a different way. on a typical passenger coach, there are eight wheel disks, each having a steel tread that rolls along a steel rail. again, the coach is well insulated so it’s smooth and quiet inside; riding in a train nowadays is exquisitely comfortable compared with a century ago, or indeed compared with most other forms of transport. each wheel carries a load of 10 tonnes, about the same as the rear axle of a double-decker bus. however, compared with a pneumatic tyre the contact patch under a railway wheel is minute, only about the size of your thumbnail. it must support the wheel and transmit all the braking forces and most of the lateral forces that steer the wheels round curves in the track. (you may find the idea of steering a railway train somewhat peculiar, and we’ll return to it in a later section.) in fact the ‘real’ contact area is even smaller than it appears. although the wheel and rail look smooth to the human eye, under a microscope they are not. within the contact patch there is very little contact at all: the load is focussed on small peaks on the surface, so that the stress at the tip of each peak (force divided by area) reaches gargantuan proportions and the peaks themselves are deformed and harden under repeated impacts until they break away as tiny flakes of steel ( figure 4 ) . moreover the tread and the rail do not grip each other firmly across the whole of the contact area. they grind, and under traction or braking there is a zone of pronounced slip towards the rear. all these processes generate high-pitched vibrations such that each wheel resonates like a church bell. this is why trains rumble and squeal: there is no compliance within the contact patch, and compared with a road vehicle, the suspension has to filter out vibrations over a wide range of frequencies. fortunately, the irregularities in the wheel and rail are small so that from the passenger’s point of view, a modern train gives a smooth ride. figure 4 contact between microscopic peaks on wheel and rail moving through water but not as smooth as the ride in a submarine, where the ‘contact patch’ extends over the entire hull, and the supporting material is not solid but liquid. the submarine is special because when cruising at depth it doesn’t make bow waves, which draw off energy and slow the craft down; nor does it encounter sea waves that would otherwise cause it to heave, pitch and roll. both kinds of wave are formed at the boundary between the two media, air and water. this is where surface craft operate, and where most of the trouble occurs. there are two main options for a sea-going craft: plough straight through the sea waves or skip over the top. quicker boats skate along the surface, supported on a relatively small area of contact. they do this because water has inertia. under impact, particles of water must be accelerated out of t

URL analysis for the-contact-patch.com


http://the-contact-patch.com/book/road/c2009-dynamic-load-transfer
http://the-contact-patch.com/book/general/g3000-introduction/#figure-deform
http://the-contact-patch.com/book/road/c1114-suspension-systems
http://the-contact-patch.com/book/road/c0418-oversteer-and-understeer
http://the-contact-patch.com/book/general/g1115-smoothing-the-ride
http://the-contact-patch.com/book/general/g1619-hysteresis-losses-in-rolling-wheels
http://the-contact-patch.com/book/road/c1405-front-wheel-set-up
http://the-contact-patch.com/book/general/g2116-the-laws-of-friction
http://the-contact-patch.com/book/rail/r1114-railway-suspension
http://the-contact-patch.com/book/road/c0504-ackermann-geometry
http://the-contact-patch.com/book/road/c2015-a-simple-model-for-tyre-deformation
http://the-contact-patch.com/book/general/g0216-passengers-in-motion
http://the-contact-patch.com/book/road/c1508-arranging-the-wheels
http://the-contact-patch.com/book/general/g3000-introduction/#figure-contactpatch
http://the-contact-patch.com/book/general/g0119-rolling-resistance

Whois Information


Whois is a protocol that is access to registering information. You can reach when the website was registered, when it will be expire, what is contact details of the site with the following informations. In a nutshell, it includes these informations;

Domain Name: THE-CONTACT-PATCH.COM
Registry Domain ID: 1659150799_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.joker.com
Registrar URL: http://www.joker.com
Updated Date: 2015-04-15T11:27:12Z
Creation Date: 2011-05-31T18:43:07Z
Registry Expiry Date: 2020-05-31T18:43:07Z
Registrar: CSL Computer Service Langenbach GmbH d/b/a joker.com
Registrar IANA ID: 113
Registrar Abuse Contact Email: [email protected]
Registrar Abuse Contact Phone: +49.21186767447
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Name Server: A.NS.JOKER.COM
Name Server: B.NS.JOKER.COM
Name Server: C.NS.JOKER.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2018-05-14T14:52:22Z <<<

For more information on Whois status codes, please visit https://icann.org/epp

NOTICE: The expiration date displayed in this record is the date the
registrar's sponsorship of the domain name registration in the registry is
currently set to expire. This date does not necessarily reflect the expiration
date of the domain name registrant's agreement with the sponsoring
registrar. Users may consult the sponsoring registrar's Whois database to
view the registrar's reported date of expiration for this registration.

TERMS OF USE: You are not authorized to access or query our Whois
database through the use of electronic processes that are high-volume and
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Services' ("VeriSign") Whois database is provided by VeriSign for
information purposes only, and to assist persons in obtaining information
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The Registry database contains ONLY .COM, .NET, .EDU domains and
Registrars.

  REGISTRAR CSL Computer Service Langenbach GmbH d/b/a joker.com

SERVERS

  SERVER com.whois-servers.net

  ARGS domain =the-contact-patch.com

  PORT 43

  TYPE domain

DOMAIN

  NAME the-contact-patch.com

  CHANGED 2015-04-15

  CREATED 2011-05-31

STATUS
clientTransferProhibited https://icann.org/epp#clientTransferProhibited

NSERVER

  A.NS.JOKER.COM 184.172.157.218

  B.NS.JOKER.COM 159.25.97.69

  C.NS.JOKER.COM 85.25.110.247

  REGISTERED yes

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