MP ME ST PR PRN DS DSS FL EM EH DY PP <> EME MFS

*Lab*Valid material property label. Applicable labels are listed under "Material Properties" in the input table for each element type in the

*Element Reference*. See Linear Material Properties in the*Material Reference*for more complete property label definitions:**EX**— Elastic moduli (also EY, EZ).

**ALPX**— Secant coefficients of thermal expansion (also ALPY, ALPZ).

**CTEX**— Instantaneous coefficients of thermal expansion (also CTEY, CTEZ).

**THSX**— Thermal strain (also THSY, THSZ).

**REFT**— Reference temperature. Must be defined as a constant; C1 through C4 are ignored.

**PRXY**— Major Poisson's ratios (also PRYZ, PRXZ).

**NUXY**— Minor Poisson's ratios (also NUYZ, NUXZ).

**GXY**— Shear moduli (also GYZ, GXZ).

**ALPD**— Mass matrix multiplier for damping.

**BETD**— Stiffness matrix multiplier for damping.

**Note:**If used in an explicit dynamic analysis, the value corresponds to the percentage of damping in the high frequency domain. For example, 0.1 roughly corresponds to 10% damping in the high frequency domain.

**DMPR**— Constant material damping coefficient.

**MU**— Coefficient of friction.

**DENS**— Mass density.

**C**— Specific heat.

**ENTH**— Enthalpy.

**KXX**— Thermal conductivities (also KYY, KZZ).

**HF**— Convection or film coefficient.

**EMIS**— Emissivity.

**QRATE**— Heat generation rate for thermal mass element MASS71. Fraction of plastic work converted to heat (Taylor-Quinney coefficient) for coupled-field elements PLANE223, SOLID226, and SOLID227.

**VISC**— Viscosity.

**SONC**— Sonic velocity.

**RSVX**— Electrical resistivities (also RSVY, RSVZ).

**PERX**— Electric relative permittivities (also PERY, PERZ).

**MURX**— Magnetic relative permeabilities (also MURY, MURZ).

**MGXX**— Magnetic coercive forces (also MGYY, MGZZ).

**LSSM**— Magnetic loss tangent.

**LSST**— Electric loss tangent.

**SBKX**— Seebeck coefficients (also SBKY, SBKZ).

**DXX**— Diffusion coefficients (also DYY, DZZ)

**CSAT**— Saturated concentration

**CREF**— Reference concentration (may not be temperature dependent)

**BETX**— Coefficient of diffusion expansion (also BETY, BETZ)

*MAT*Material reference number to be associated with the elements (defaults to the current MAT setting [

**MAT**]).*C0*Material property value, or if a property-versus-temperature polynomial is being defined, the constant term in the polynomial.

*C0*can also be a table name (%*tabname*%); if*C0*is a table name,*C1*through*C4*are ignored.*C1*,*C2*,*C3*,*C4*Coefficients of the linear, quadratic, cubic, and quartic terms, respectively, in the property-versus-temperature polynomial. Leave blank (or set to zero) for a constant material property.

**MP** defines a linear material property as
a constant or in terms of a fourth order polynomial as a function
of temperature. (See the **TB** command for nonlinear
material property input.) Linear material properties typically require
a single substep for solution, whereas nonlinear material properties
require multiple substeps; see Linear Material Properties in the *Material Reference* for details.

If the constants C1 - C4 are input, the polynomial

Property =

C0+C1(T) +C2(T)^{2}+C3(T)^{3}+C4(T)^{4}

is evaluated at discrete temperature points with linear interpolation
between points (that is, a piecewise linear representation) and a
constant-valued extrapolation beyond the extreme points. First-order
properties use two discrete points (±9999°). The **MPTEMP** or **MPTGEN** commands must be used
for second and higher order properties to define appropriate temperature
steps. To ensure that the number of temperatures defined via the **MPTEMP** and **MPTGEN** commands is minimally
sufficient for a reasonable representation of the curve, ANSYS generates
an error message if the number is less than N, and a warning message
if the number is less than 2N. The value N represents the highest
coefficient used; for example, if C3 is nonzero and C4 is zero, a
cubic curve is being used which is defined using 4 coefficients so
that N = 4.

A polynomial input is not valid in an
explicit dynamic analysis or for *Lab* =
ALPD and BETD. C1, C2, C3, and C4 are ignored.

The use of tabular material properties (*C0* = %*tabname*%) is available only for FLUID116. Fluid properties can be evaluated as a function
of pressure, temperature, velocity, time, and location (independent
variables). Use the ***DIM** command to create the
table of property values as a function of the independent variables.
Then refer to this table via the **MP** command for
the property. If using temperature or pressure independent variables,
you need to activate the appropriate pressure or temperature degrees
of freedom on the element. Tabular material properties are calculated
before the first iteration (that is, using initial values [**IC**]). For more information about using table-type array
parameters, see the discussion on applying tabular boundary conditions in the *Basic Analysis Guide*.

When defining a reference temperature (**MP**,REFT), you can convert temperature-dependent secant coefficients
of thermal expansion (SCTE) data from the definition temperature to
the reference temperature. To do so, issue the **MPAMOD** command.

This command is also valid in SOLUTION.

Command Option Lab | Available Products |

ALPD | MP ME ST <> <> <> <> <> <> <> DY PP <> EME MFS |

ALPX | MP ME ST PR PRN DS DSS <> <> <> DY PP <> EME MFS |

ALPY | MP ME ST PR PRN DS DSS <> <> <> DY PP <> EME MFS |

ALPZ | MP ME ST PR PRN DS DSS <> <> <> DY PP <> EME MFS |

BETD | MP ME ST <> <> <> <> <> <> <> DY PP <> EME MFS |

BETX | MP ME <> <> <> <> <> <> <> <> <> PP <> EME MFS |

BETY | MP ME <> <> <> <> <> <> <> <> <> PP <> EME MFS |

BETZ | MP ME <> <> <> <> <> <> <> <> <> PP <> EME MFS |

CREF | MP ME <> <> <> <> <> <> <> <> <> PP <> EME MFS |

CSAT | MP ME <> <> <> <> <> <> <> <> <> PP <> EME MFS |

DXX | MP ME <> <> <> <> <> <> <> <> <> PP <> EME MFS |

DYY | MP ME <> <> <> <> <> <> <> <> <> PP <> EME MFS |

DZZ | MP ME <> <> <> <> <> <> <> <> <> PP <> EME MFS |

C | MP ME ST PR PRN DS DSS <> <> <> DY PP <> EME MFS |

CTEX | MP ME ST PR PRN DS DSS <> <> <> DY PP <> EME MFS |

CTEY | MP ME ST PR PRN DS DSS <> <> <> DY PP <> EME MFS |

CTEZ | MP ME ST PR PRN DS DSS <> <> <> DY PP <> EME MFS |

DENS | MP ME ST PR PRN DS DSS <> <> EH DY PP <> EME MFS |

DMPR | MP ME ST PR PRN <> <> <> <> <> DY PP <> EME MFS |

EMIS | MP ME ST PR PRN DS DSS <> <> <> DY PP <> EME MFS |

ENTH | MP ME ST PR PRN DS DSS <> <> <> DY PP <> EME MFS |

EX | MP ME ST PR PRN DS DSS <> <> <> DY PP <> EME MFS |

EY | MP ME ST PR PRN DS DSS <> <> <> DY PP <> EME MFS |

EZ | MP ME ST PR PRN DS DSS <> <> <> DY PP <> EME MFS |

GXY | MP ME ST PR PRN DS DSS <> <> <> DY PP <> EME MFS |

GXZ | MP ME ST PR PRN DS DSS <> <> <> DY PP <> EME MFS |

GYZ | MP ME ST PR PRN DS DSS <> <> <> DY PP <> EME MFS |

HF | MP ME ST PR PRN DS DSS <> <> <> DY PP <> EME MFS |

KXX | MP ME ST PR PRN DS DSS <> <> <> DY PP <> EME MFS |

KYY | MP ME ST PR PRN DS DSS <> <> <> DY PP <> EME MFS |

KZZ | MP ME ST PR PRN DS DSS <> <> <> DY PP <> EME MFS |

LSSM | MP <> <> <> <> <> <> <> EM EH <> PP <> EME <> |

LSST | MP ME <> <> <> <> <> <> EM EH <> PP <> EME MFS |

MGXX | MP ME <> <> <> <> <> <> EM <> DY PP <> EME MFS |

MGYY | MP ME <> <> <> <> <> <> EM <> DY PP <> EME MFS |

MGZZ | MP ME <> <> <> <> <> <> EM <> DY PP <> EME MFS |

MU | MP ME ST <> PRN <> <> <> <> <> DY PP <> EME MFS |

MURX | MP ME ST PR PRN DS DSS FL EM EH DY PP <> EME MFS |

MURY | MP ME ST PR PRN DS DSS FL EM EH DY PP <> EME MFS |

MURZ | MP ME ST PR PRN DS DSS FL EM EH DY PP <> EME MFS |

NUXY | MP ME ST PR PRN DS DSS <> <> <> DY PP <> EME MFS |

NUXZ | MP ME ST PR PRN DS DSS <> <> <> DY PP <> EME MFS |

NUYZ | MP ME ST PR PRN DS DSS <> <> <> DY PP <> EME MFS |

PERX | MP ME <> <> <> <> <> FL EM EH DY PP <> EME MFS |

PERY | MP ME <> <> <> <> <> FL EM EH DY PP <> EME MFS |

PERZ | MP ME <> <> <> <> <> FL EM EH DY PP <> EME MFS |

PRXY | MP ME ST PR PRN DS DSS FL <> <> DY PP <> EME MFS |

PRXZ | MP ME ST PR PRN DS DSS FL <> <> DY PP <> EME MFS |

PRYZ | MP ME ST PR PRN DS DSS FL <> <> DY PP <> EME MFS |

QRAT | MP ME ST PR PRN DS DSS <> EM <> DY PP <> EME MFS |

REFT | MP ME ST PR PRN DS DSS <> <> <> DY PP <> EME MFS |

RSVX | MP ME ST PR PRN DS DSS FL EM EH DY PP <> EME MFS |

RSVY | MP ME ST PR PRN DS DSS FL EM EH DY PP <> EME MFS |

RSVZ | MP ME ST PR PRN DS DSS FL EM EH DY PP <> EME MFS |

SBKX | MP ME <> <> <> <> <> <> EM <> <> PP <> EME MFS |

SBKY | MP ME <> <> <> <> <> <> EM <> <> PP <> EME MFS |

SBKZ | MP ME <> <> <> <> <> <> EM <> <> PP <> EME MFS |

SONC | MP ME <> <> <> <> <> FL <> <> DY PP <> EME MFS |

THSX | MP ME ST <> <> <> <> FL <> <> DY PP <> EME MFS |

THSY | MP ME ST <> <> <> <> FL <> <> DY PP <> EME MFS |

THSZ | MP ME ST <> <> <> <> FL <> <> DY PP <> EME MFS |

VISC | MP ME ST <> <> <> <> FL <> <> DY PP <> EME MFS |