We're building this thing in AutoDesk Inventor and SolidWorks, yet I don't know what it is. Can someone please tell me? Thanks.
I suspect you're building this "thing" as an exercise to expose you to the various aspects of the software. As a beginner, you want a challenge in creating the part, but you don't want to be overwhelmed by a complex design.
The part includes a number of radii or fillets, a counter-bored hole as well as an ordinary hole and an offset on the tangs.
The design as pictured could be used for many different applications. I can envision it to provide a bearing mount (the counter-bored hole) for an axle. The offset conventional hole would permit the axle to be inset from the mounting surface.
This is one of many possible applications for a very broad and vague design. Beyond the instructional aspect, the application is limited only by one's imagination and understanding of the technical world.
It is a Z bracket.