Ramp down spring point elements for loadcase 3 at the *COOL step
*RM99
This card is used in conjunction with *FIAT to ramp down spring point elements (boundary condition ID 99) for loadcase 3 at the *COOL step. The advantage of *RM99 over *RAMP is that it does not require knowing the time of the *COOL step in advance. This card is similar to *FSUB, but it allows a custom spring stiffness instead of rigid constraints and custom spring locations defined by *FIAT instead of only the corners of the substrate. The corresponding *FIAT card must use loadcase 3 and the spring stiffness must be defined in material ID 3.