FEM/DEM Analysis of Tire-Terrain interaction
Budget: ₹1,500 – ₹12,500 INR
Background: This is basically a Modeling and Simulation based project. The off-road vehicle dynamics is affected either by the surficial features acting as impediments or by the non-conducive nature of the sub-surface soil. The co-existence of mutually contradicting parameters like ride performance, safety, traction, fuel efficiency and tire durability makes the study of terramechanics more critical from designer's viewpoint. These challenges can be effectively tackled by Finite element Analysis based simulation.
The project is focused on development of simulation based models for studying terrain-vehicle interaction. The project aims to explore the stresses, sinkage and other contact parameters by using FEA and DEM simulation of tire and terrain contact patch.
Methodology:
1. The complete geometry of an All Terrain Tire needs to be developed in Solidworks software. The tire model should be complete in all respects including Tread, Sidewall, Carcass, Rim etc. The material properties of each of the tire sub-parts should be assigned accordingly. The tire should be of the size of around 235/65R17 typically for SUVs. Tire diameter is 29 inches.
2. Tyres: Hyperelastic models viz. Mooney-Rivlin, Neo-Hookean, Arruda Boyce and Ogden model each to be selected. Consider tyre inflation pressure as 28 psi. The load on wheel may be considered as 600 kgs.
3. Soil: Geomechanical models viz. Drucker-Prager, Cam-clay or Mohr Coulomb models to be selected for soil. Material properties of soil to be considered from reference papers or can be obtained from me. a
4. Sand: Discrete Element Method (DEM) to be used for carrying out simulation between tire and sand, sand being granular material.
5.Simulation is to be carried out using either transient structural or explicit dynamics as deemed fit either in Ansys Workbench or Abaqus. Each of the above mentioned hyperelastic model to be considered in combination with at least two geo-mechanical models. So in all there should be at least 8 simulations.
Results: Stresses, tire-soil contact patch forces, tire-soil contact patch area, %slip.
Graphs: Vertical load vs tire sinkage
Vertical load vs ground pressure (at contact patch)
Vertical load vs Tire deformation
Vertical load vs soil compaction
Deliverables:
1. The project deliverables should be in the form of simulation results, graphs generated, animation of simulation. The executable / implementation file to be generated for handing over to me.
2. The designer to explain the method, steps and types of simulation adopted.
The project is focused on development of simulation based models for studying terrain-vehicle interaction. The project aims to explore the stresses, sinkage and other contact parameters by using FEA and DEM simulation of tire and terrain contact patch.
Methodology:
1. The complete geometry of an All Terrain Tire needs to be developed in Solidworks software. The tire model should be complete in all respects including Tread, Sidewall, Carcass, Rim etc. The material properties of each of the tire sub-parts should be assigned accordingly. The tire should be of the size of around 235/65R17 typically for SUVs. Tire diameter is 29 inches.
2. Tyres: Hyperelastic models viz. Mooney-Rivlin, Neo-Hookean, Arruda Boyce and Ogden model each to be selected. Consider tyre inflation pressure as 28 psi. The load on wheel may be considered as 600 kgs.
3. Soil: Geomechanical models viz. Drucker-Prager, Cam-clay or Mohr Coulomb models to be selected for soil. Material properties of soil to be considered from reference papers or can be obtained from me. a
4. Sand: Discrete Element Method (DEM) to be used for carrying out simulation between tire and sand, sand being granular material.
5.Simulation is to be carried out using either transient structural or explicit dynamics as deemed fit either in Ansys Workbench or Abaqus. Each of the above mentioned hyperelastic model to be considered in combination with at least two geo-mechanical models. So in all there should be at least 8 simulations.
Results: Stresses, tire-soil contact patch forces, tire-soil contact patch area, %slip.
Graphs: Vertical load vs tire sinkage
Vertical load vs ground pressure (at contact patch)
Vertical load vs Tire deformation
Vertical load vs soil compaction
Deliverables:
1. The project deliverables should be in the form of simulation results, graphs generated, animation of simulation. The executable / implementation file to be generated for handing over to me.
2. The designer to explain the method, steps and types of simulation adopted.