How to Model the Olympic Sun Sculpture
The Olympics have started and we all saw the beautiful Olympic
Sun Sculpture that formed the backdrop to the Olympic flame. It’s an elegant
design and I immediately thought how easy it would be to model up in SOLIDWORKS.
It’s all fairly standard features, the only tricky bit is
mating up the assembly to give motion to this kinetic sculpture.
So let’s get started!
Step 1: Draw The ‘Ring’ part.
This gives the sculpture its basic size. Start by drawing a
30-sided polygon on the front face. I am not trying to make this full scale so
I set the length of one of the edged to 250mm.
To complete the part just turn this into a circular profile
sweep. A great new feature that came in 2016. I set the diameter of the sweep
Step 2: Create a ‘star’ element.
This is a little bit trickier, but still we can just use essential
commands. I started with an Axis from the Front and Top planes. This Axis was
then used to generate an angled plane 6 degrees from the front plane.
Onto that plane I drew a Guide Sketch:
This ensures that I can get my star to fit nicely onto the
WHY? Why did I make the angled plane? The answer comes
later. Read on!
Step 3: Create the central bobbin section.
Sizes aren’t too critical here, just go with what you like.
Step 4: The Spoke.
All sketches need to be on the new angled plane.
The spoke first. Again I made use of the new Circular sweep
to make this from a single line.
Just don’t make it too long. The Guide Sketch helps here.
Next comes the Balls.
I tried to keep the spacing fairly even and also inside the
Finally we add the end disc.
I ensured that it didn’t go beyond the end of the guide
curve, but that it was still a good size. This is more art than science, so go
with what looks good.
Step 5: Rotate and configure.
This part need 4 spokes, so a simple circular pattern is
We also want to create versions of the part that is rotated
in 6 degree increments.
Once the circular pattern is in place, right click on the
angled plane and choose Configure Feature.
This brings up a table:
We want to create 15 configurations and set the angles for
those in 6 degree increments. If only we could sort configurations numerically!
(Those looking at 2017 Beta will see that this is coming! Happy days!)
So why do this? Surely we could use mates in the assembly?
Well, we could, but it is a little tricky and you end up
having to create lots of mates. We will see how many I need using this method.
Step 6: Build the Assembly.
Place the Ring part at the Origin.
Add the First Star and mate the Right Planes to each other
and make it concentric about the ring segment. (Remember you can use Sketch
segments for this if necessary.)
Step 7: The first pattern
Now we just need to pattern the stars to create half the
finished part. Here we create an axis from the Right and Top planes. We need 15
at 12 degree increments.
in place, change the configurations of the instances so that they step through
the angular steps.
Step 8: The final pattern
To end the modelling, just do a final circular pattern, 2
instances equally spaced and there you have it:
What I really like about this is the elegant complex
movement. So how many mates are in this complex kinetic sculpture? TWO!
So there we have it the Olympic Sun Sculpture. Play around
with the sizes and see what you can create. What if you had fewer spokes? More
Let’s see if we can use Visualize Professional to create
some stunning images of this iconic design. Now go and support your athletes as
they follow the Olympic ideal and strive to make us proud and show how sport
brings people together in these ever fractious times.