3D Tire Modeling in ANSYS

Components of a TireChallenges in tire Simulation• Complex 3D Geometry• Highly Nonlinear Hyperelastic Materials• Composite Structure• Complicated Contacts• Large Deformation

ANSYS Advantages• Easy Geometric Modifications in DesignModeler• Single Workbench Environment• Reinforcement and Hydrostatic Fluid Elements• All Conformal Mesh Not Required, Contacts can

be Used

Reinforcement Elements

+/- 70 degree rebars in belts

Zero degree rebar in body ply

With Positive Volume With Negative Volume

Hydrostatic Fluid ElementVolume Extraction of the Air in the Tire is done using

Positive and Negative Volume Hydrostatic Fluid Elements

Inflation Analysis

Total Deformation

Stress in Reinforcement Elements

Inflation Pressure in Tire – 34.8 psi

Footprint Analysis

Tire Internal Pressure – 32 psi 34.8 psi

37 psi 40 psi

Force Applied – 3000 N (1/4th Vehicle Weight)

Rolling Analysis

Total Deformation

Wheel Hub is Fixed with Rotation Free and the Road is Moved Towards the Tire

Water Splash Analysis

Air

Water

Vehicle Velocity- 60 kmph

Water depth- 65mm

Front SideBack Side

Design for Tire Profile to Minimize Water Splash to Avoid Contamination of Engine Bay and Critical Components

Geometry Mesh

Tire subjected to a Blast WaveTNT Explosion from Landmines Damages Tire by

Eroding the Rubber at Road Interface

Interaction of Blast Wave with Air Inside Tire

Tire Damage

Air : Atmospheric and Inside Tire

TNT Charge

ANSYS Autodyn

Chetan Patil and Santosh Kottalgi

Tyrescy.com

ANSYS Fluent

ANSYS Mechanical