Andrew-
We could drop ~140lbs from some height onto a tank, with some representative strike surface to hit the tank (1x1 aluminum tube? 1/4in aluminum plate?). We could also strap a tank onto one robot and crash it into another robot, but that might get more than a little hairy.
There would be much to consider in making a 'realistic' test.
Quote:
Originally Posted by Nate Laverdure
This article is relevant to this discussion... emphasis mine.
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Very good read.
Figure 1 in the article is quite applicable to FRC (maybe not air tanks, strictly speaking) because it shows the difference in performance of a 5ft/s impact and a 15ft/s impact, two very real speeds likely to occur on the field.
Figure 3 shows PP (tank material) under various strain rates, but none of which are remotely close to strain rates that could develop from a robot-robot impact. However, it does show how strength stiffness change with strain rate. It would be interesting to compute the strain rate sensitivity and see what might happen at impact-level strain rates.