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/GRAV

/GRAV

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/GRAV

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Block Format Keyword

/GRAV - Gravity Load

Description

Defines gravity load on node group.

Format

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

/GRAV/grav_ID/unit_ID

grav_title

fct_IDT

Dir

skew_ID

sens_ID

grnd_ID

 

Ascalex

FscaleY
hmtoggle_plus1Flag Definition

Field

Contents

SI Unit Example

grav_ID

Gravity load block identifier

(Integer, maximum 10 digits)

 

unit_ID

Optional unit identifier

(Integer, maximum 10 digits)

 

grav_title

Gravity load block title

(Character, maximum 100 characters)

 

fct_IDT

Time function identifier

(Integer)

 

Dir

Direction in translation (input should be: X, Y or Z)

(Text)

 

skew_ID

Skew identifier

(Integer)

 

sens_ID

Sensor identifier

≠ 0: the gravity load is applied after sensor activation (the time function is shifted in time).

(Integer)

 

grnd_ID

Node group to which the gravity load is applied

(Integer)

 

Ascalex

Abscissa (time) scale factor

Default = 1.0  (Real)

symbol_S_unit

FscaleY

Ordinate (force) scale factor

Default = 1.0  (Real)

symbol_m_s2
hmtoggle_plus1Comments
1.The gravity load direction must be right justified in the ten characters of field number 2.
2.The gravity loads are only applied to the nodes defined in grnd_ID, which must not be null.
3.The actual load function value is calculated as follows:

/GRAV applies to each node and is stated as force:

With m being the mass of node. The node will be moving until a force balance reached.

See Also:

Implicit Features and Compatibility Information

Skew and Frame (/SKEW & /FRAME)