Special Credit to

Tian Chen, Julian Panetta, Max Schnaubelt, and Mark Pauly

for the amazing paper, experiment, and most important of all, the amazing rhino & grasshopper models!!

Citation:

Tian Chen, Julian Panetta, Max Schnaubelt, and Mark Pauly. 2021. Bistable auxetic surface structures. ACM Trans. Graph. 40, 4, Article 39 (August 2021), 9 pages. https://doi.org/10.1145/3450626.3459940

Experiment with Chen, et al. ‘s model

🧮 Analysis of the Grasshopper model / variables

🍞 Making the mold

🏭 Making the auxetic fabric

Long belt shape 🥋

• For the belt, I set the length of the side as 1, and the other variables are basically the same as the fabric above. The gap is a bit big for the 1 cm side. (above the side is 2 cm)
• this one stretches more obviously in the horizontal direction 🪢
• I also tried to make a buckle for the belt. In this process, I broke the pattern into shorter ones, but it didn’t work. Then I realized that I need at least one hexagon to get the triangles connected, otherwise things would just be scattered.
• Also I didn’t end up soldering pieces together, because it is too toxic to burn PLA. I made a few holes to let the strings go through, instead of a buckle.
• In the end the buckle idea didn’t work out, so I printed a few rectangles, and punched 3 holes to make them the connecting parts for the skirt.

Experiment with making the pattern by myself

April 15

Today I experimented with Triangle in grasshopper. NGL it was much harder than I expected.

After in-putting the numbers for the triangle, I have to rotate the sides. I am still a bit confused about how to make the pattern in that paper, but I hope I am getting there

i think i can experiment with offsetting the 3 start / end points and connect them with the intersecting points?

(I’m sorry, my experiment stopped here LOL) I am not good at math!! If I have time, I’d love to try again :D