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ghcacj(½ð±Ò+1):лл 2010-06-08 12:09:13
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DL POLY 2 also allows atoms to be completely immobilised (i.e. ¡°frozen¡± at a fixed point in theMD cell). This is achieved by setting all forces and velocities associated with that atom to zeroduring each MD timestep. Frozen atoms are signalled by assigning an atom a non-zero value forthe freeze parameter in the FIELD file. DL POLY 2 does not calculate contributions to the virialor the stress tensor arising from the constraints required to freeze atomic positions. In DL POLY 2the frozen atom option cannot be used for sites in a rigid body. As with the tethering potential,the reference position is scaled with the cell vectors in constant pressure simulations.In DL POLY 2 the frozen atom option is handled by the subroutine freeze.
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17Â¥2010-06-08 10:57:17
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lei0736(½ð±Ò+1):лл 2010-06-30 14:20:04
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