xed would be if it stretched. The force F is also being applied horizontally to the ends, which wouldn't make sense if they were completely fixed. The paper perhaps isn't very clear here, but I think they must be allowing the ends to slide horizontally.
Figures 18 and 19 map the distance s along the (curved) lath to the x axis and vertical deflection to the y axis ("Note that w is a function of s, which runs along the deformed shape of the lath"), and this shows that L is remaining constant (but not r).
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le from params > input in the minute almost 13 in the
video where you will need the T,L from point list command.
in the new version i do not know what is the alternative command then
this is what i found it hard, i can not know what is next in grasshopper
thank you :)…