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/PROP/TYPE46 (SPR_MUSCLE)

/PROP/TYPE46 (SPR_MUSCLE)

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/PROP/TYPE46 (SPR_MUSCLE)

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/PROP/TYPE46 - Spring Property for Modeling of Muscles

Description

This property describes a user-defined elasto-visco plastic material using user-defined functions to describe time dependent active and passive behavior for tension and (force vs. deflection or force vs. strain time and visco plastic and elastic).

This property can be defined for compression and tension.

Format

(1)

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(10)

/PROP/TYPE46/prop_ID/unit_ID or /PROP/SPR_MUSCLE/prop_ID/unit_ID

prop_title

Mass

Stiffness

Vel_max

Force

Xk

fct_ID1

fct_ID2

fct_ID3

fct_ID4

 

Idens

 

 

 

 

Damp

EPSI

 

 

 

 

 

 

 

Scale_t

Scale_x

Scale_v

Scale_F

 

 
hmtoggle_plus1Flag Definition

Field

Contents

SI Unit Example

prop_ID

Property identifier

(Integer, maximum 10 digits)

 

unit_ID

Optional unit identifier

(Integer, maximum 10 digits)

 

prop_title

Material title

(Character, maximum 100 characters)

 

Mass

Element mass, or element density depending on Idens flag.

(Real)

or

Stiffness

Initial element stiffness (for initial time step calculation)

(Real)

Vel_max

Maximum velocity or strain rate

(Real)

or

Force

Initial Force

(Real)

Xk

Contact stiffness

Default = initial element stiffness (Real)

fct_ID1

Time dependent scale function identifier (factor vs. time)

(Integer)

fct_ID2

Scale function identifier (depending on EPSI: (default = 0) factor vs. strain or factor vs. elongation)

(Integer)

fct_ID3

Scale function identifier (depending on EPSI: (default = 0) factor vs. strain rate or factor vs. velocity)

(Integer)

fct_ID4

Function identifier for (depending on EPSI: (default = 0) force vs. strain or force vs. displacement)

(Integer)

Idens

Mass input variable flag

(Integer)

= 0: Mass is per unit length (equivalent to density)

= 1: Mass

Damp

Damping coefficient

(Real)

 

EPSI

Deflection calculation flag

(Integer)

= 0: strain (default)

= 1: elongation

 

Scale_t

Scale factor for abscissa (time) for fct_ID1

(Real)

Scale_x

Scale factor for abscissa (elongation) for fct_ID2 , if EPSI = 1

(Real)

Scale_v

Scale factor for abscissa for fct_ID3

(Real)

If EPSI = 1: velocity

If EPSI = 0: strain rate

or

Scale_F

Scale factor for ordinate (force) for fct_ID4

(Real)

hmtoggle_plus1Example (Muscle)

#RADIOSS STARTER

#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|

/UNIT/2

unit for prop

                 g                  mm                  ms

#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|

/PROP/SPR_MUSCLE/2/2

MUSCLE

#               Mass             Inertia             Vel_max               Force                  XK

                .001                 .02               0.005                0.25                  .1

# fct_ID1    fct_ID2   fct_ID3   fct_ID4               Idens

        1          2         3         4                   1

#               Damp                EPSI

                0.00                   1

#            scale_t             scale_X             scale_V             scale_F

                   1                   1                   1                 1.0

#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|

/MOVE_FUNCT/1

scaling function 5

                1.0                 0.1                 0.0                 0.0

/FUNCT/1

Force_vs_Time (active)

#              time          scaling factor

              0.0000          0.00000000

              0.9000          0.00000000

              1.0000          1.00000000

              2.0000          5.00000000

              3.0000          5.00000000

              4.0000          2.00000000

              5.0000          2.00000000

              6.0000          2.00000000

              7.0000          2.00000000

              8.0000          2.00000000

              9.0000         10.00000000

             10.0000         10.00000000

             11.0000          2.00000000

             12.0000          2.00000000

             13.0000         12.00000000

             14.0000         12.00000000

             15.0000         12.00000000

             20.0000          2.00000000

             29.0000          0.00000000

             30.0000          0.00000000

/FUNCT/2

Force_vs_Elongation (active)

                -1.0          1.00000000

                 0.0          0.00000000

                 1.0          1.00000000

#    0.100000000E+10          1.00000000

/FUNCT/3

Force_vs_Velocity (active)

     -0.100000000E+1          2.00000000

                0.00          0.00000000

              10.000          2.00000000

              20.000          1.00000000

              30.000          1.00000000

/FUNCT/4

Force_vs_Elongation (passive)

                -1.0         -3.00000000

                 0.0          0.00000000

                 1.0          3.00000000

#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|

#ENDDATA

#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
hmtoggle_plus1Comments
1.Total force is:

See Also:

Material Compatibility