Effect of solid body contact deformation on the real contact area under the thermo-mechanical coupling

Figures & data

Figure 1. A solid model with a fractal rough surface.

Figure 2. Contact model.

Figure 3. The coupling between the temperature field and the stress field.

Table 1. Parameters and material properties of solid A and solid B in simulations.

	Solid A	Solid B
Thermal conductivity ρ/ (W/mK)	48.15	32.66
Mass density ρ/ (kg/m^3)	7810	7820
Specific heat c / (Nm/kgK)	468.9	552.7
Thermal expansion coefficient α/(1/K)	11.59 × 10^−6	12.0 × 10^−6
Elastic modulus E /(GPa)	200	211
Poisson’s ratio λ	0.25	0.277
Yield strength σs ≥ (MPa)	418	625

Figure 4. Variation of the contact area ratio vs. the dimensionless load using different analysis models (here, P-R means P-R model between an elasto-plastic rough solid and a rigid flat one and so on).

Figure 5. Contact area ratio vs. sliding time for different solid contact deformation.

Figure 6. Maximum surface contact temperature vs. sliding time for different solid body contact deformation.