Dihedral Bending

Definition

Name	Mesh>Dihedral
Type	Bending Dihedral
Defined in	Edges

The bending energy using dihedral harmonics is described as:

\[U = \frac{1}{2} k_b (1 - \cos(\theta - \theta_0))\]

Where: - \(k_b\) is the bending rigidity. - \(\theta\) is the angle formed by the triangles meeting at the edge. - \(\theta_0\) is the preferred dihedral angle.

Note

The dihedral potential is equivalent to Bending Potential but is faster to compute. Note this potential is the same as the one used in LAMMPS and HOODMD-Blue.

Python calling

evolver.add_force("Mesh>Bending>Dihedral", {"kappa": {"1": str(kappa_value)},
                                            "theta0": {"1": str(theta0_value)}})