In this example, you export an assembly with one part and no constraints. Look for the following two example CAD files in the Simscape™ Multibody™ Link examples folder:
The full assembly file,
The part, a cup, in a file called
Although it has only one part, you must export the full assembly into XML, not just the cup part.
Open the cup assembly file in your CAD platform and check its geometry and mass properties.
Cup Assembly in a CAD Platform
|Volume||0.0001 cubic meters (m3)|
|Surface area||0.0381 square meters (m2)|
|Density||3.0 grams/cm3 = 3000 kg/m3|
|Mass||0.2906 kilograms (kg)|
|Principal moments of inertia at |
the center of gravity
|Ix = 0.00015, Iy =
Iz = 0.00067 kg-m2
The inertia tensor is computed at the center of gravity, with the coordinate axes aligned with assembly base-origin axes, indicated in the figure. The x-axis is the cup's axis of symmetry, and the y- and z-axes point across the cup.
Using the Simscape Multibody Link interface to your CAD platform,
export the assembly as an XML mutlibody description file. The XML
cup_assembly.xml appears in your working CAD
Once you have generated the XML multibody description file, you are ready to import the cup assembly into a Simscape Multibody model. For a step-by-step description of the CAD Import procedure, see Import a CAD Rigid Body (Simscape Multibody).