This week, I did quite a lot of literature review and a lot of math to convert the complicated model to a simple but really applicable version. The model can convert the corrugated sturcture to simple plates by redefining the equivalent material properties (Young's modulus mostly). Using this model, the stiffness of the double-layered structure can be mathematically expressed as a function of design parameters, which is exactly what we want. Yeah! The model is verified by applying the zig-zag corrugated structure we proposed. Prototype design is being conducted, and once we have the paper cutter in hand (later today or tomorrow), we could build our first prototype. One potential problem is for experimental testings. I have contacted a few professors who may have tensile testers in their labs. However, there is still no luck since the PIs don's feel confortable letting their students go back to lab and train me to use the machine (due to the COVID, they said they it would be nice to do it after the ramp-up). I am thinking about alternatives and searching for other labs that may have the machine. One thing we can do, but this maybe my least favorite approach, is to build a robot with wheels, and put weights (bottles of water) on it to verify what our design can support the weights we want it to support. So far, I believe I am on track. So far so good. I will keep brainstorming!

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