Defining Finite Axial Resistance

Unlike the other pins you defined in this lesson, the pin itself (actuator_piston) is modeled. An axial spring of 500 lbs/in is specified to simulate the resistance to the motion of the actuator_piston into the actuator_casing.

To define the resistive force:

  1. In the Simulation study tree, right-click the Connections folder and select Pin.
  2. In the PropertyManager, under Type:
    1. Click the inner face of the actuator_casing for Cylindrical Faces/Edges .
    2. Click the cylindrical face of the actuator_piston for Cylindrical Faces/Edges .
  3. Under Type, clear both options.
  4. Under Connection Type, select Distributed.
  5. Under Options:
    1. Select English (IPS) in Unit .
    2. Type 500 for Axial Stiffness .
    3. Make sure that the Rotational Stiffness is set to zero.
  6. Click .
  7. Click Section View (View toolbar) again to restore the original view of the assembly.