Why does this structure resist out-of-plane bending?
Jessica
Is there a typo here? This structure resists shearing.
Jessica
When you bend the structure over, the nodes connected with longer red springs will be resisted getting close to each other, so the structure resists out-of-plane bending.
sarukkai
I don't think the structure will really resist shearing with much force. For instance, if we sheared along the y-axis, a slight scaling down/compression along the x-axis would maintain roughly the same length for the black springs, and the red springs would not have been compressed enough to truly push back and provide integrity.
sc2019
The blue springs will resist shearing since they will always pull the structure back into a square. Obviously, it depends on how strong the blue springs are, since the weaker they are the less resistance there will be to shear, but for the purpose of this slide we can probably assume they are strong enough to resist shearing.
Why does this structure resist out-of-plane bending?
Is there a typo here? This structure resists shearing.
When you bend the structure over, the nodes connected with longer red springs will be resisted getting close to each other, so the structure resists out-of-plane bending.
I don't think the structure will really resist shearing with much force. For instance, if we sheared along the y-axis, a slight scaling down/compression along the x-axis would maintain roughly the same length for the black springs, and the red springs would not have been compressed enough to truly push back and provide integrity.
The blue springs will resist shearing since they will always pull the structure back into a square. Obviously, it depends on how strong the blue springs are, since the weaker they are the less resistance there will be to shear, but for the purpose of this slide we can probably assume they are strong enough to resist shearing.