Thermal analysis of Disc brake using MATLAB.pptx

MATLAB software have played an important role in the field of engineering. Its applications, especially in heat transfer can be used to analyze the thermal variations of a Disc brake very easily.

1. Heat Transfer Thermal Analysis of Disc Brake using MATLAB Software

2. The Aim of this study is to analyze the thermal behavior of the brake discs using the Finite Element Method (FEM) through examining the heat distribution on the brake disc using 3-D modelling using simulation software, MATLAB. Results obtained from the FEM reflect the effects of high heat due to the friction between the disc pad with the disc rotor. Results of the simulation study are used to identify the effect of the heat distribution that occurred during the braking process

3. Materials Used Material Tensile Strength Compressive Strength Friction Coefficient Yield Strength GCI 290 1293 0.41 189 Ti-6AI-4V 1156 1070 0.34 951 TMC 878 1300 0.31 744 AMC 1 76 406 0.35 28 AMC 2 85 761 0.44 32 Friction Coefficient Material Properties

4. The Finite element method has become a powerful tool for the numerical solution of a wide range of engineering problems. It has been developed simultaneously with the increasing use of the high-speed electronic digital computers and with the growing emphasis on numerical methods for engineering analysis. In this step, it defines the analysis type and option, as well as applies load and initiates the finite element solution. This involves three phases: x Pre-Process x Phase solution x Post-Process

5. Procedure: Simulate a circular brake pad moving around the disc. This detailed simulation over a short timescale models the heat source as a point moving around the disc. First, create a thermal transient model. Transient thermal analysis is the evaluation of how a system responds to fixed and varying boundary conditions over time. Import the disc geometry and Plot the geometry with the face labels.

6. Generate a fine mesh with a small target maximum element edge length and Plot the mesh.

7. Specify the thermal properties of the material such as Thermal conductivity, Mass density and Specific Heat. Here, The material used is iron with Mass Density= 8000, Thermal conductivity = 100,Specific Heat = 500

8. Specify the boundary conditions. All the faces are exposed to air, so there will be free convection. Model the moving heat source by using a function handle that defines the thermal load as a function of space and time and Specify the initial temperature.

9. Solving the model for the time steps

10. Heat Transfer Functions Matlab Code Function createpde Create model thermalProperties Assign thermal properties of a material for a thermal model internalHeatSource Specify internal heat source for a thermal model thermalBC Specify boundary conditions for a thermal model thermalIC Set initial conditions or initial guess for a thermal model solve Solve heat transfer, structural analysis, or electromagnetic analysis problem assembleFEMatrices Assemble finite element matrices pdeplot Plot solution or mesh for 2-D problem pdeplot3D Plot solution or surface mesh for 3-D problem

11. Conclusion: This example analyses the temperature distribution of a disc brake. Disc brakes absorb the translational mechanical energy through friction and transform it into the thermal energy, which then dissipates. The transient thermal analysis of a disc brake is critical because the friction and braking performance decreases at high temperatures. Therefore, disc brakes must not exceed a given temperature limit during operation. The transient thermo analysis of Disc brakes in brake applications has been per-formed. The present study can provide a useful de-sign tool and improve the brake performance of Disc brake system

12. References https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.sciencedirect.com/science/article/pii/S209044791200069X&ved=2ahUKEwiKk5e_3N7wAhWvzTgGHRQNA-wQFjADegQIGRAF&usg=AOvVaw2rBRrWNPn9ExLO36GGfJvc https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.ijedr.org/papers/IJEDR1402014.pdf&ved=2ahUKEwiKk5e_3N7wAhWvzTgGHRQNA-wQFjANegQIGhAC&usg=AOvVaw2zdj190ZUBKMxS41xGuz8X https://www.google.com/url?sa=t&source=web&rct=j&url=https://aip.scitation.org/doi/pdf/10.1063/1.4968281%23:~:text%3DEnergy%2520changes%2520occur%2520during%2520the,car%2520in%2520the%2520braking%2520process.&ved=2ahUKEwiKk5e_3N7wAhWvzTgGHRQNA-wQFjABegQIBBAG&usg=AOvVaw2z0jgXUOLuXXBI-Pdjk5jU https://youtu.be/ehh7pnbTnYo