Project no.2

Shape optimization


What to do

In this project we will optimize the volume/strength ratio of a tibia part. We have a system with two fixed rods as illustrated in the figure with blue color. These two rods symbolizes the knee joint and a possible actuator connection. To make it simple we are modeling the ground force during a kick, by a force F on the red bolt. The ground force F can be assumed to be perpendicular to the blue construction line.

The total volume of the part is restricted to 60cm3. The challenge is to design the part as strong as possible by locating the available 60cm3 of plastic in areas that are most useful. A non-optimized part is illustrated in the figure by the transparent body. You do not have to make the rods.

Specifications

  • The distance between the 3 rods, and the diameters is specified in the figure.
  • The rods will lie on the blue centerline as shown in the figure.
  • The total volume of the part can not be more than 60cm3.
  • The shape of the part can be freely chosen in 3D, but the part can not be wider in the rod length direction than 5cm.
  • The 3 holes in the part must easily slip on to the rods (diameter >12.2mm).
  • The part must fit into a single Ender tray.
  • The part can be FEM simulated in SW by specifying the face of the hole surrounding the blue rods as fixed, and the external force to the face of the hole surrounding the red rod.
  • You are free to use SW topology optimization, or any other generative design tool if you like.

Submission requirements

  • An animated GIF picture showing the SolidWorks FEM simulated displacement result in motion.
  • Participation in the IN5590 breaking competition - 5/3, 14.15-16.00