pair_smd_ulsph.txt
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pair_smd_ulsph.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

			pair_style smd/ulsph command :h3

			[Syntax:]

			pair_style smd/ulsph args :pre

			these keywords must be given :l
			keyword = {DENSITY_SUMMATION} or {DENSITY_CONTINUITY} and {VELOCITY_GRADIENT} or {NO_VELOCITY_GRADIENT} and {GRADIENT_CORRECTION} or {NO_GRADIENT_CORRECTION}

			[Examples:]

			pair_style smd/ulsph DENSITY_CONTINUITY VELOCITY_GRADIENT *NO_GRADIENT_CORRECTION

			[Description:]

			The {smd/ulsph} style computes particle interactions according to continuum mechanics constitutive laws and an updated Lagrangian Smooth-Particle Hydrodynamics algorithm.

			This pair style is invoked similar to the following command:

			pair_style smd/ulsph DENSITY_CONTINUITY VELOCITY_GRADIENT *NO_GRADIENT_CORRECTION
			pair_coeff i j *COMMON rho0 c0 Q1 Cp hg &
			*END :pre

			Here, {i} and {j} denote the {LAMMPS} particle types for which this pair style is
			defined. Note that {i} and {j} can be different, i.e., {ulsph} cross interactions
			between different particle types are allowed. However, {i}--{i} respectively {j}--{j} pair_coeff lines have to precede a cross interaction.
			In contrast to the usual {LAMMPS} {pair coeff} definitions, which are given solely a
			number of floats and integers, the {ulsph} {pair coeff} definition is organised using
			keywords. These keywords mark the beginning of different sets of parameters for particle properties,
			material constitutive models, and damage models. The {pair coeff} line must be terminated with
			the {*END} keyword. The use the line continuation operator {&} is recommended. A typical
			invocation of the {ulsph} for a solid body would consist of an equation of state for computing
			the pressure (the diagonal components of the stress tensor), and a material model to compute shear
			stresses (the off-diagonal components of the stress tensor).

			Note that the use of GRADIENT_CORRECTION can lead to severe numerical instabilities. For a general fluid simulation, NO_GRADIENT_CORRECTION is recommended.

			Please see the "SMD user guide"_PDF/SMD_LAMMPS_userguide.pdf for a complete listing of the possible keywords and material models.

			:line

			[Mixing, shift, table, tail correction, restart, rRESPA info]:

			No mixing is performed automatically.
			Currently, no part of USER-SMD supports restarting nor minimization.
			rRESPA does not apply to this pair style.

			:line

			[Restrictions:]

			This fix is part of the USER-SMD package. It is only enabled if
			LAMMPS was built with that package. See the "Making LAMMPS"_Section_start.html#start_3
			section for more info.

			[Related commands:]

			"pair_coeff"_pair_coeff.html

			[Default:] none

			:line

lammps/doc/src/pair_smd_ulsph.txt920641bbffbcmaster

pair_smd_ulsph.txtView Options

lammps/doc/src/pair_smd_ulsph.txt
920641bbffbcmaster

pair_smd_ulsph.txt
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