Specifications

77
In the following lessons we shall look in more detail at the different operations in an AnyBodyStudy and
finally also at the AnyBodyCalibrationStudy.
• Lesson 1: ModelInformation
• Lesson 2: SetInitialConditions
• Lesson 3: KinematicAnalysis
• Lesson 4: InverseDynamicAnalysis
• Lesson 5: AnyBodyCalibrationStudy
We need a model with a bit more substance than the template we created above. If you do not already have
our trusted arm model stored somewhere, please download it here
, save it to your disk, and load it into
AnyBody. We are then ready to proceed to Lesson1: ModelInformation
.
Lesson 1: Model Information
In this lesson we are presuming that you have the arm2d.any file loaded into AnyBody. If you do not have
the model on file, please download and save a copy from this link: arm2d.any
. It should look like this when
you have loaded the model and opened a Model View:
The mechanics of this model is fairly simple in the sense that it only has two segments and two revolute
joints. However, in more realistic models with dozens of segments connected by many joints of different
types it can be very difficult to maintain the overview of the model. Making a model move requires a balance
between the number of kinematic degrees of freedom and the number of constraints, and it can be difficult
to get it completely right. This is where the ModelInformation operation comes in. Let us go ahead and try it
on the arm2d model. Expand the study tree and locate the ModelInformation operation: