Defining an Elastic Support The actuator assembly sits on a thick sheet of rubber characterized by 1000 (lbs/in)/in2 stiffness. To define an elastic support: In the Simulation study tree, right-click the Fixtures folder and select Elastic Support . In the PropertyManager under Type, select the bottom face of the mounting_bracket for Faces for Elastic Support . Under Stiffness: Select English (IPS) in Unit . Select Distributed. Type 1000 for Normal and Shear stiffnesses. Click . Parent topicActuator Mechanism with Connectors Previous topic Defining Finite Axial Resistance Next topic Specifying a Global Interaction