The Stationary, One Way FSI and Time Dependent, One Way FSI studies are available with the Fluid–Multibody Interaction, Assembly interface, which requires the Multibody Dynamics Module.

The Stationary, One Way FSI () study is used for stationary fluid-structure interaction computations where the structural deformations are so small that they do not affect the flow. It is available for the Fluid–Multibody Interaction, Assembly multiphysics interface, available with the Multibody Dynamics Module.

The study consists of two study steps: a Stationary, Fluid study step, solving for the fluid velocity and pressure fields, followed by a Stationary, Solid study step, solving for the solid deformation field. The settings available for the two study steps are the same as for a Stationary study step. If an additional physics interface is added, then it is automatically added to both study steps.

The Time Dependent, One Way FSI () study is used for time-dependent fluid-structure interaction computations where the structural deformations are so small that they do not affect the flow. It is available for the Fluid–Multibody Interaction, Assembly multiphysics interface, available with the Multibody Dynamics Module.

The study consists of two study steps: a Time Dependent, Fluid study step, solving for the fluid velocity and pressure fields, followed by a Time Dependent, Solid study step, solving for the solid deformation field. The settings available for the two study steps are the same as for a Time Dependent study step. If an additional physics interface is added, then it is automatically added to both study steps.

The Stationary, Fluid () study step is added to the Stationary, One Way FSI study, which is available for the Fluid–Multibody Interaction, Assembly interface. The settings available for this node are the same as for the Stationary node.

The Time Dependent, Fluid () study step is added to the Time Dependent, One Way FSI study, which is available for the Fluid–Multibody Interaction, Assembly interface. The settings available for this node are the same as for the Time Dependent node.

The Stationary, Solid () study step is added to the Stationary, One Way FSI study, which is available for the Fluid–Multibody Interaction, Assembly interface. The settings available for this node are the same as for the Stationary node.

The Time Dependent, Solid () study step is added to the Time Dependent, One Way FSI study, which is available for the Fluid–Multibody Interaction, Assembly interface. The settings available for this node are the same as for the Time Dependent node.