Fundamentals of Tire Designing

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Information about Fundamentals of Tire Designing

Published on December 18, 2008

Author: binayshaw


Slide 1: Seminar on TIRE DESIGN Slide 2: Under the guidance of Prof. Tridibesh Das Department of Mechanical Engineering KALYANI GOVT. ENGINEERING COLLEGE Presented by Binay Shaw 3rd year, ME Slide 3: T I R E A tire can be defined as an envelope of rubbers and chemicals, reinforced with fabric. The tire is held to a metal rim by the compressive forces of wire beads. The major characteristics of the tire can be summarized as follows: Load carrying capacity Cushioning ability Torque transmission Steering response Road holding ability Slide 4: Typical components used in tire assembly are listed below: Typical components used in tire assembly are listed below Inner Liner Body Ply Sidewall Beads Apex Belt Package Tread Cushion Gum Slide 5: Materials Antioxidants Styrene-butadiene co-polymer Polybutadiene Halobutyl Carbon Black Silica Natural Rubber Textile fabric reinforces Slide 6: The basic tire and rim nomenclature OUTSIDE DIAMETER (OD) SECTION WIDTH (SD) SECTION HEIGHT (SH) STATIC LOADED RADIUS (SLR) LOADED SECTION WIDTH MINIMUM DUAL SPACING ASPECT RATIO Slide 7: Passenger Tire Sidewall Information Passenger Tire Sidewall Information: Slide 8: Light Truck Sidewall Information "LT" stands for Light Truck "LT235/85R16" is the size designation for a metric light truck tire "LOAD RANGE D" identifies the load and inflation limits "RADIAL" indicates that the tire has a radial construction "MAX. LOAD SINGLE 2623 lbs. AT 65 psi COLD" indicates the maximum load rating of the tire and corresponding minimum cold inflation pressure when used in a dual configuration. Slide 9: Load Index and Speed Rating Slide 10: SPEED SYMBOL This indicates the maximum safe speed corresponding to its given load index at which the vehicle can be plied, under specified conditions. Speed symbol Speed (km/h) A1 5 A5 25 A8 40 D 65 F 90 J 100 Speed symbol Speed (km/h) L 120 N 140 Q 160 T 190 V 240 Y 300 Slide 11: TUBELESS TIRE In a tubeless tire the tube is integral within the tire; unlike a tube type tire. ADVANTAGES OF TUBELESS TIRES: Slow air leak. Less chance of damage in case of flat running. Lightness in weight of tubeless tire leads to better fuel efficiency. chances of tire damage are minimal. lower maintenance. Slide 12: DESIGNING OF TIRE Step 1To begin with we will need curves like this. Step 2Which we will need to mirror join and revolve. Step 3 We will need to extend that curve Step 4Trim the upper surface with the selected surface. Slide 13: Step 5 Trim the upper surface with that curve Step 6Array that surface in 60 copies in a 360 degree angle. C:\WINDOWS\hinhem.scr Step 7Make a tube witch will be the center of the tread. Step 8Mirror the 60 arrayed surfaces and now all we have to do is to join the tread surfaces with a Boolean command. Slide 14: SOME IMPORTANT NOTES ABOUT TIRE Max Performance - You want no-compromises, dry weather traction for the street or weekend competition High Performance - All Season - You want a tire for your sporty coupe or sedan with the ability to tackle light snow. Touring - You want a comfortable ride and good treadwear. Trailer - You need tires for your Trailer. RV/Motorhome - You need tires for your RV or Motorhome. Street/Sport Truck or SUV - You want a sportier look and feel for your pick-up or SUV. Off-Road - You want the best off-road traction and are willing to give up some ride comfort to get it. FC:\WINDOWS\hinhem.scr : FC:\WINDOWS\hinhem.scr REFERENCES Slide 16: Thank You…

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