Defines material properties for an explicit dynamics analysis.
Valid material property label. Applicable labels are listed under "Material Properties" in the input table for each explicit dynamics element type in the Element Reference.
Hourglass and bulk viscosity properties (valid
for PLANE162, SHELL163, SOLID164 using
reduced integration, and SOLID168).
Cable properties (valid for LINK167).
Defines a material coordinate system for
the orthotropic material model (valid for PLANE162, SHELL163, SOLID164,
and SOLID168) or the anisotropic material model (valid
for SOLID164 and SOLID168).
Material reference number (defaults to the current
on MAT command).
VAL3, . . . ,
Additional input for specified
property. The meaning of
vary, depending on
Lab. See the table below for
VAL3, . . . ,
Additional input for hourglass and bulk viscosity properties (
Hourglass control type. For solid elements (PLANE162, SOLID164, and SOLID168), 5 options are available. For quadrilateral shell and membrane elements (SHELL163) with reduced integration, the hourglass control is based on the formulation of Belytschko and Tsay; i.e., options 1-3 are identical and options 4-5 are identical.
Hourglass coefficient. (Defaults to 0.1.)
Values greater than 0.15 may cause instabilities. The recommended default
applies to all options. The stiffness forms can stiffen the response (especially
if deformations are large) and, therefore, should be used with care. For the
shell and membrane elements, the value input for
Quadratic bulk viscosity coefficient. (Defaults to 1.5.)
Linear bulk viscosity coefficient. (Defaults to 0.06.)
Hourglass coefficient for shell bending.
Hourglass coefficient for shell warping.
Additional input for rigid body constraint (
Translational constraint parameter (relative to global Cartesian coordinates).
Rotational constraint parameter (relative to global Cartesian coordinates).
Additional input for cable properties (
Load curve ID defining engineering stress
versus engineering strain (i.e., change in length over the initial length).
Additional input for material coordinate system (
Coordinate system ID number from the EDLCS command.
This coordinate system will be used to orient the orthotropic or anisotropic
materials associated with the material number,
Additional input for fluid material properties (
Bulk modulus of fluid. If
Lab = RIGID, you must specify elastic
modulus (EX), density (DENS), and Poisson's ratio (NUXY) [MP
Lab = CABLE, you must specify density
(DENS) and one of the following: Young's modulus (EX) or an engineering stress-strain
FLUID, you must specify either the bulk modulus (
or both Young's modulus (EX) and Poisson's ratio (NUXY) (if all three are
VAL1 will be used).
After you define a rigid body using EDMP,RIGID, you may assign inertia properties to that rigid body using the EDIPART command.
EDMP,ORTHO is required for orthotropic or anisotropic material properties that are not locally orthotropic with material axes determined by element nodes (see Orthotropic Elastic Model and Anisotropic Elastic Model in the ANSYS LS-DYNA User's Guide).
Via the GUI,
Lab = RIGID, CABLE, ORTHO, and
FLUID are available through the material model interface. See Defining Explicit Dynamics Material
Models in the ANSYS LS-DYNA User's Guide for more information.
This command is also valid in SOLUTION.
Distributed ANSYS Restriction This command is not supported in Distributed ANSYS.