PSI - Issue 83

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

275

Figure 1: Casing and TJ geometries made in space-claim

2.2. Material properties Material properties were assigned to the L-80 casing and the hardened steel TJ using standard elastic/plastic definitions consistent with grade behaviour. The materials’ properties are shown in Table 1.

Table 1: Material properties of L-80, P110 and hardened steel [6]

Properties

L-80

Hardened Steel

244.5 (9 5 8 in)

Nominal Outer Diameter, OD (mm)

124

Nominal Wall Thickness, t (mm) 25

-

Modulus of Elasticity (MPa)

200,000

207,000

Density (kg/m3)

7750

7830

Hardness (HRC)

18.8

58

2.3. Mesh The contact region was discretized using a refined mesh to capture the gradient change in the contact pressure. Inflation layers were applied to the inner surface of the casing where sliding occurs. A mesh sensitivity check was performed to ensure that discretization effects did not dominate predicted wear trends.