PSI - Issue 83

Iman Onsa et al. / Procedia Structural Integrity 83 (2026) 273–279

277

comparison between the experimental result [8] and the simulation, showing that the simulation is a replica of the experiment with results with a very small error.

0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4

experiment

Simulation

Depth (mm)

Volume (cm³)

Figure 2: Experimental vs Simulation result at 115rpm and 1000N

3.2. Effect of side load As a function of the increase from 1000 N to 1400 N side load, both lubricant types resulted in a monotonic relationship between the level of side load, predicted contact pressure and sliding driven wear (i.e. wear depth, and wear volume). It was concluded that side load is the primary operational driver of casing wear at the assessed load range. Wear is primarily a function of the applied force and thus increases at the tool-casing joint as the force is increased; this increase is caused by an increase in the real contact pressure at the casing-tool joint interface. In wear modelling using Archard equations, wear increases as contact pressure and sliding distance increase; therefore, a larger load leads to a larger driving term for wear.

Figure 3: Wear depth in the casing after 0.1s at 115RPM, 1000N OBM