Syntax: -
-compute ID group-ID dilatation/atom --
Examples: -
-compute 1 all dilatation/atom --
Description: -
-Define a computation that calculates the per-atom dilatation for each -atom in a group. This is a quantity relevant for Peridynamics -models. -
-For small deformation, dilatation of is the measure of the volumetric -strain. -
-The dilatation "theta" for each peridynamic particle I is calculated -as a sum over its neighbors with unbroken bonds, where the -contribution of the IJ pair is a function of the change in bond length -(versus the initial length in the reference state), the volume -fraction of the particles and an influence function. See the -PDLAMMPS user -guide for a formal -definition of dilatation. -
-This command can only be used with a subset of the Peridynamic pair -styles: peri/lps, peri/ves and peri/eps. -
-The dilatation value will be 0.0 for atoms not in the specified -compute group. -
-Output info: -
-This compute calculates a per-atom vector, which can be accessed by -any command that uses per-atom values from a compute as input. See -Section_howto 15 for an overview of LAMMPS output options. -
-The per-atom vector values are unitlesss numbers (theta) >= 0.0. -
-Restrictions: -
-This compute is part of the PERI package. It is only enabled if -LAMMPS was built with that package. See the Making -LAMMPS section for more info. -
-Related commands: -
-compute damage, compute -plasticity -
-Default: none -
- diff --git a/doc/compute_dilatation.txt b/doc/compute_dilatation.txt deleted file mode 100644 index f3b3328b54..0000000000 --- a/doc/compute_dilatation.txt +++ /dev/null @@ -1,65 +0,0 @@ -"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 - -compute dilatation/atom command :h3 - -[Syntax:] - -compute ID group-ID dilatation/atom :pre - -ID, group-ID are documented in compute command -dilation/atom = style name of this compute command :ul - -[Examples:] - -compute 1 all dilatation/atom :pre - -[Description:] - -Define a computation that calculates the per-atom dilatation for each -atom in a group. This is a quantity relevant for "Peridynamics -models"_pair_peri.html. - -For small deformation, dilatation of is the measure of the volumetric -strain. - -The dilatation "theta" for each peridynamic particle I is calculated -as a sum over its neighbors with unbroken bonds, where the -contribution of the IJ pair is a function of the change in bond length -(versus the initial length in the reference state), the volume -fraction of the particles and an influence function. See the -"PDLAMMPS user -guide"_http://www.sandia.gov/~mlparks/papers/PDLAMMPS.pdf for a formal -definition of dilatation. - -This command can only be used with a subset of the Peridynamic "pair -styles"_pair_peri.html: peri/lps, peri/ves and peri/eps. - -The dilatation value will be 0.0 for atoms not in the specified -compute group. - -[Output info:] - -This compute calculates a per-atom vector, which can be accessed by -any command that uses per-atom values from a compute as input. See -Section_howto 15 for an overview of LAMMPS output options. - -The per-atom vector values are unitlesss numbers (theta) >= 0.0. - -[Restrictions:] - -This compute is part of the PERI 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:] - -"compute damage"_compute_damage.html, "compute -plasticity"_compute_plasticity.html - -[Default:] none diff --git a/doc/compute_plasticity.html b/doc/compute_plasticity.html deleted file mode 100644 index 0c3dfeb16a..0000000000 --- a/doc/compute_plasticity.html +++ /dev/null @@ -1,72 +0,0 @@ - -Syntax: -
-compute ID group-ID plasticity/atom --
Examples: -
-compute 1 all plasticity/atom --
Description: -
-Define a computation that calculates the per-atom plasticity for each -atom in a group. This is a quantity relevant for Peridynamics -models. -
-The plasticity for a Peridynamic particle is the so-called consistency -parameter (lambda). For elastic deformation lambda = 0, otherwise -lambda > 0 for plastic deformation. For details, see -(Mitchell) and the PDF doc included in the LAMMPS -distro in doc/PDF/PDLammps_EPS.pdf. -
-This command can be invoked for one of the Peridynamic pair -styles: peri/eps. -
-The plasticity value will be 0.0 for atoms not in the specified -compute group. -
-Output info: -
-This compute calculates a per-atom vector, which can be accessed by -any command that uses per-atom values from a compute as input. See -Section_howto 15 for an overview of LAMMPS output options. -
-The per-atom vector values are unitlesss numbers (lambda) >= 0.0. -
-Restrictions: -
-This compute is part of the PERI package. It is only enabled if -LAMMPS was built with that package. See the Making -LAMMPS section for more info. -
-Related commands: -
-compute damage, compute -dilatation -
-Default: none -
-(Mitchell) Mitchell, "A non-local, ordinary-state-based -viscoelasticity model for peridynamics", Sandia National Lab Report, -8064:1-28 (2011). -
- diff --git a/doc/compute_plasticity.txt b/doc/compute_plasticity.txt deleted file mode 100644 index 29882213a5..0000000000 --- a/doc/compute_plasticity.txt +++ /dev/null @@ -1,66 +0,0 @@ -"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 - -compute plasticity/atom command :h3 - -[Syntax:] - -compute ID group-ID plasticity/atom :pre - -ID, group-ID are documented in compute command -plasticity/atom = style name of this compute command :ul - -[Examples:] - -compute 1 all plasticity/atom :pre - -[Description:] - -Define a computation that calculates the per-atom plasticity for each -atom in a group. This is a quantity relevant for "Peridynamics -models"_pair_peri.html. - -The plasticity for a Peridynamic particle is the so-called consistency -parameter (lambda). For elastic deformation lambda = 0, otherwise -lambda > 0 for plastic deformation. For details, see -"(Mitchell)"_#Mitchell and the PDF doc included in the LAMMPS -distro in "doc/PDF/PDLammps_EPS.pdf"_PDF/PDLammps_EPS.pdf. - -This command can be invoked for one of the Peridynamic "pair -styles"_pair_peri.html: peri/eps. - -The plasticity value will be 0.0 for atoms not in the specified -compute group. - -[Output info:] - -This compute calculates a per-atom vector, which can be accessed by -any command that uses per-atom values from a compute as input. See -Section_howto 15 for an overview of LAMMPS output options. - -The per-atom vector values are unitlesss numbers (lambda) >= 0.0. - -[Restrictions:] - -This compute is part of the PERI 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:] - -"compute damage"_compute_damage.html, "compute -dilatation"_compute_dilatation.html - -[Default:] none - -:line - -:link(Mitchell) -[(Mitchell)] Mitchell, "A non-local, ordinary-state-based -viscoelasticity model for peridynamics", Sandia National Lab Report, -8064:1-28 (2011).