Marque a opção no Support conditions do Ftool que configura um apoio de 2º gênero:
Support Conditions
Displac. X Spring
Free FaKx
Displac. Y Spring
Free Fix Ky Rotation Z
Spring
Free Fix K
Angle: 0.0 deg
A
Support Conditions
Displac. X
Spring
FreeFixK
Spring
Displac. Y
FreeFix Ky
Rotation Z Spring
Free Fix K
B
Support Conditions
Displac. A Spring
Free For
Displac. V
Spring
FreeFiOV Rotation Z Spring
Angle deg