# bond_style zero command

## Syntax

``` LAMMPS
bond_style zero keyword
```

-   zero or more keywords may be appended
-   keyword = *nocoeff*

## Examples

``` LAMMPS
bond_style zero
bond_style zero nocoeff
bond_coeff *
bond_coeff * 2.14
```

## Description

Using an bond style of zero means bond forces and energies are not
computed, but the geometry of bond pairs is still accessible to other
commands.

As an example, the [compute bond/local](compute_bond_local) command can
be used to compute distances for the list of pairs of bond atoms listed
in the data file read by the [read_data](read_data) command. If no bond
style is defined, this command cannot be used.

The optional *nocoeff* flag allows to read data files with a BondCoeff
section for any bond style. Similarly, any bond_coeff commands will only
be checked for the bond type number and the rest ignored.

Note that the [bond_coeff](bond_coeff) command must be used for all bond
types. If specified, there can be only one value, which is going to be
used to assign an equilibrium distance, e.g. for use with [fix
shake](fix_shake).

## Restrictions

> none

## Related commands

[bond_style none](bond_none)

## Default

none