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MAT10

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MAT10

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Bulk Data Entry

MAT10 – Material Property Definition, Form 10

Description

Defines material properties for fluid elements in coupled fluid-structural analysis.

Format

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

MAT10

MID

BULK

RHO

C

GE

ALPHA

 

 

 

hmtoggle_plus1Example

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

MAT10

2

0.5

22.1

 

 

 

 

 

 

Field

Contents

MID

Material identification number.

No default (Integer > 0)

BULK

Bulk modulus.

No default (Real > 0.0)

RHO

Mass density. Automatically computes the mass.

No default (Real > 0.0)

C

Speed of sound.

No default (Real > 0.0)

GE

Fluid element damping coefficient.

No default (Real)

ALPHA

Normalized porous material damping coefficient. Since the admittance is a function of frequency, the value of ALPHA should be chosen for the frequency range of interest for the analysis.

No default (Real)

Comments

1.MAT10 may be referenced by PSOLID entries with FCTN=’PFLUID’.
2.The material identification number must be unique with respect to MAT1, MAT2, MAT3, MAT9, and MAT10 entries, but may be shared with MAT4, MAT5 or MATFAT.
3.BULK, RHO, and C are related by BULK = C2 * RHO.

Two out of the three must be specified, and the other will be calculated according to this equation.

4.To obtain the damping coefficient GE, multiply the critical damping ratio C/C0 by 2.0.
5.This card is represented as a material in HyperMesh.

See Also:

Coupled Frequency Response Analysis of Fluid-Structure Models

Bulk Data Section

Guidelines for Bulk Data Entries

Bulk Data Entries by Function

The Input File