Table 1.

Atomistically derived dragline silk potential parameters and physical dimensions of radial and spiral thread diameters, taken from experimental findings [50,51].

parameter	value
initial stiffness, E1	875.9 MPa
exponential parameter, α	14.2
tangent stiffness parameter, β	180 MPa
final stiffness, E2	491.2 MPa
yield strain, ɛy	0.1356
softening strain, ɛs	0.6322
ultimate (breaking) strain, ɛb	0.6725
radial thread diameter (from earlier studies [50,51])	3.93 μm
spiral thread diameter (from earlier studies [50,51])	2.40 μm