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dihedral_harmonic.txt
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			"LAMMPS WWW Site"_lws - "LAMMPS Documentation"_ld - "LAMMPS Commands"_lc :c

			:link(lws,http://lammps.sandia.gov)
			:link(ld,Manual.html)
			:link(lc,Section_commands.html#comm)

			:line

			dihedral_style harmonic command :h3

			[Syntax:]

			dihedral_style harmonic :pre

			[Examples:]

			dihedral_style harmonic
			dihedral_coeff 1 80.0 1 2 :pre

			[Description:]

			The {harmonic} dihedral style uses the potential

			:c,image(Eqs/dihedral_harmonic.jpg)

			The following coefficients must be defined for each dihedral type via the
			"dihedral_coeff"_dihedral_coeff.html command as in the example above, or in
			the data file or restart files read by the "read_data"_read_data.html
			or "read_restart"_read_restart.html commands:

			K (energy)
			d (+1 or -1)
			n (integer >= 0) :ul

			[Restrictions:]

			This dihedral style can only be used if LAMMPS was built with the
			"molecular" package (which it is by default). See the "Making
			LAMMPS"_Section_start.html#2_3 section for more info on packages.

			[Related commands:]

			"dihedral_coeff"_dihedral_coeff.html

			[Default:] none