modelBasicWorldForce

External force acting at frame_b, defined by 3 input signals

Extends from Interfaces.PartialOneFrame_b (Base model for components providing one frame_b connector + outer world + assert to guarantee that the component is connected).

Information

The 3 signals of the force connector are interpreted as the x-, y- and z-coordinates of a force acting at the frame connector to which this component is attached. Via parameter resolveInFrame it is defined, in which frame these coordinates shall be resolved:

Types.ResolveInFrameB.Meaning
world Resolve input force in world frame (= default)
frame_b Resolve input force in frame_b
frame_resolve Resolve input force in frame_resolve (frame_resolve must be connected)

If resolveInFrame = Types.ResolveInFrameB.frame_resolve, the force coordinates are with respect to the frame, that is connected to frame_resolve.

If resolveInFrame is not Types.ResolveInFrameB.frame_resolve, then the position vector and the orientation object of frame_resolve must be set to constant values from the outside in order that the model remains balanced (these constant values are ignored).

Parameters

TypeNameDefaultDescription
Modelica.Mechanics.MultiBody.Types.ResolveInFrameBresolveInFrameModelica.Mechanics.MultiBody.Types.ResolveInFrameB.worldFrame in which force is resolved (1: world, 2: frame_b, 3: frame_resolve)

Connectors

TypeNameDefaultDescription
Interfaces.Frame_bframe_b (from PartialOneFrame_b)Coordinate system fixed to the component with one cut-force and cut-torque
Interfaces.Frame_resolveframe_resolveThe input signals are optionally resolved in this frame
Modelica.Blocks.Interfaces.RealInput[3]forcex-, y-, z-coordinates of force resolved in frame defined by resolveInFrame