Simcenter Femap Creating Revolute Joints in Femap
2022-10-06T14:52:40.000-0400
Femap
Summary
Creating revolute joint in SOL 402 (Multi-Step Nonlinear Kinematic) in Femap
Details
Example Set Up
Two meshed cylinders
Coincident node creation between cylinders
Node IDs are for demonstration purposes only
Two RBE2 spiders. N10000 connected to blue|aft cylinder and N10001 connected to pink|fwd cylinder
At this point, N10000 and N10001 are coincident but have no connectivity
Boundary Conditions
Enforced rotation is 180 deg in global X
New CSys
Local X aligned with cylinder axes
The reason for the use of a new CSys is because it is assumed that the global CSys does not aligned (in this case, it was and could have been used)
The reason the local X was defined to be the aligned to the axis of rotation is defined in the Revolute joint definition (hence it could have been local R in a cylindrical CSys, etc.)
Revolute Joint Creation
Using default properties
Relative DOF defines why local X axis was defined as the axis of rotation
Accept defaults up to Time Steps
180 deg. / 36 steps = 5 deg./step
Accept remaining defaults
Solve
Results
Node IDs are for demonstration purposes only
Two RBE2 spiders. N10000 connected to blue|aft cylinder and N10001 connected to pink|fwd cylinder
At this point, N10000 and N10001 are coincident but have no connectivity
Enforced rotation is 180 deg in global X
Local X aligned with cylinder axes
The reason for the use of a new CSys is because it is assumed that the global CSys does not aligned (in this case, it was and could have been used)
The reason the local X was defined to be the aligned to the axis of rotation is defined in the Revolute joint definition (hence it could have been local R in a cylindrical CSys, etc.)
Revolute Joint Creation
Relative DOF defines why local X axis was defined as the axis of rotation
Accept defaults up to Time Steps
Accept remaining defaults
Solve
Results