softmatter:Harmonic Spring

From NSDL Materials Digital Library Wiki

Polymeric molecules, such as surfactants and block copolymers, are often treated as bead spring chains where beads of size σ are permanently connected via hormic springs,

where r is the radial separation between bonded beads, k is the spring constant, and R₀ is the equilibrium separation between two beads.

Another commonly used spring in polymer simulation is the FENE spring .