Analysis of thermomechanical coupling of disc and brake pads

 

Critical Focal Hot Spots is a place where the iron surface changes phase and turns into martensite when the temperature rises rapidly. Phase change has a negative effect and causes cracks to grow in cast irons. When the hot spot is macroscopic, the temperature can rise to 1100 degrees Celsius. To avoid this, it is necessary to reduce the maximum surface temperature of the brake system. To do this, materials with high contact transfer characteristics must be used.

heat-transfer_conduction_brake-disc

heat-transfer_conduction_brake-disc

Various studies have shown that the coefficient of friction and specific heat have the greatest effect on contact temperature. This can also be achieved by increasing the heat dissipation conditions using ventilated or ventilated discs. Much research has been done in this area and it has been the starting point for racing cars.

Disk-Brake

Disk-Brake

Thermal points are caused by non-uniform contact between two objects during friction, which is caused by high local pressure and a high rate of heat flux generation. A phenomenon that is common in the braking system. To even out the contact surface of the brake pads and discs, either the structural design must be improved or materials with a high Yang modulus must be used.

In this research, the braking system was modeled and then the effects of temperature and stress fluctuations during braking in different situations were investigated. This analysis is used to determine the fatigue life of disc and brake pads, areas prone to crack growth, and optimize brake system design.

tire-road-and-brake-model-in-Abaqus

tire-road-and-brake-model-in-Abaqus

Related services:

  • Thermal analysis
  • Cooling system design
  • Redesigned and optimized
  • Fatigue analysis
  • Investigation of fuzzy transformation effects
  • Malfunction analysis

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