80 lines
2.2 KiB
ReStructuredText
80 lines
2.2 KiB
ReStructuredText
.. index:: pair_style smd/tlsph
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pair_style smd/tlsph command
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============================
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Syntax
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""""""
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.. code-block:: LAMMPS
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pair_style smd/tlsph args
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Examples
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""""""""
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.. code-block:: LAMMPS
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pair_style smd/tlsph
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Description
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"""""""""""
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The *smd/tlsph* style computes particle interactions according to
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continuum mechanics constitutive laws and a Total-Lagrangian
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Smooth-Particle Hydrodynamics algorithm.
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This pair style is invoked with the following command:
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.. code-block:: LAMMPS
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pair_style smd/tlsph
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pair_coeff i j *COMMON rho0 E nu Q1 Q2 hg Cp &
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*END
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Here, *i* and *j* denote the *LAMMPS* particle types for which this
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pair style is defined. Note that *i* and *j* must be equal, i.e., no
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*tlsph* cross interactions between different particle types are
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allowed. In contrast to the usual *LAMMPS* *pair coeff* definitions,
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which are given solely a number of floats and integers, the *tlsph*
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*pair coeff* definition is organized using keywords. These keywords
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mark the beginning of different sets of parameters for particle
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properties, material constitutive models, and damage models. The *pair
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coeff* line must be terminated with the *\*END* keyword. The use the
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line continuation operator *&* is recommended. A typical invocation of
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the *tlsph* for a solid body would consist of an equation of state for
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computing the pressure (the diagonal components of the stress tensor),
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and a material model to compute shear stresses (the off-diagonal
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components of the stress tensor). Damage and failure models can also
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be added.
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Please see the `SMD user guide <PDF/SMD_LAMMPS_userguide.pdf>`_ for a
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complete listing of the possible keywords and material models.
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----------
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Mixing, shift, table, tail correction, restart, rRESPA info
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"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
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No mixing is performed automatically. Currently, no part of MACHDYN
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supports restarting nor minimization. rRESPA does not apply to this
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pair style.
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----------
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Restrictions
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""""""""""""
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This fix is part of the MACHDYN package. It is only enabled if
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LAMMPS was built with that package. See the :doc:`Build package <Build_package>` page for more info.
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Related commands
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""""""""""""""""
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:doc:`pair_coeff <pair_coeff>`
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Default
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"""""""
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none
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