Rough contact surface reconstruction based on A mechanical-thermal contact model

Abstract

Direct observation and measurement of stress and temperature distributions at contact interface is a challenge due to the randomness and complexity of surfaces, as well as the interface is always opaque. In this paper, the random contact process is characterized based on the real contact volume, and then the mechanical-thermal contact theory is established, which reveals the interaction mechanism between contact force and thermal resistance. Then, a reconstruction method of interface topography, contact stress and temperature distribution is established based on this model combination with modified W-M fractal function, which provides a visual evaluation method for the concealed interface performance of complex engineering structures. The proposed indirect method of interface contact characteristics is expected to be applied in the detection and evaluation of complex engineering structures.