Open Access

Table 5

Parameters of tube-die surface contact.

Contact surface Contact function Sliding mode Friction coefficient Interstitial heat conduction coefficient (kW/(m2·°C))
Tube-flexible ball Penalty Finite 0.1 2.1
Tube-insert die Kinematic Small Rough
Tube-bend die Kinematic Finite 0.4
Tube-clamp die Kinematic Small Rough
Tube-mandrel shank Penalty Finite 0.1
Tube-pressure die Kinematic Finite 0.4
Tube-wiper die Kinematic Finite 0.1

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