“…16 Below the isostatic point, central-force spring networks are mechanically floppy. However, simulations have shown that even floppy or sub-isostatic networks can be rigidified by an external deformation 13,17,18 or by the presence of additional interactions such as a bending rigidity. 6,10,11,[19][20][21][22][23] These recent studies suggest that if the static network structure and the element strength of a soft athermal material are known, the material response can be predicted based on the physical concept of rigidity.…”