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/IMPVEL/FGEO

/IMPVEL/FGEO

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/IMPVEL/FGEO

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Block Format Keyword

/IMPVEL/FGEO - Specified Final Geometry

Description

Describes the final position of a set of N nodes. The final position is provided by a node number. The node may eventually move.

Format

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

/IMPVEL/FGEO/impvel_ID/unit_ID

impvel_title

fct_ID

part_ID

fct_IDL

sens_ID

 

 

 

 

 

 

Ascale

T0

Tstart

FscaleL

Dmin

 

node_ID1

node_ID'1

 

 

 

 

 

 

 

 

...

...

 

 

 

 

 

 

node_IDN

node_ID'N

 

 

 

 

 

 

 
hmtoggle_plus1Flag Definition

Field

Contents

SI Unit Example

impvel_ID

Imposed velocity block identifier

(Integer, maximum 10 digits)

 

unit_ID

Optional unit identifier

(Integer, maximum 10 digits)

 

impvel_title

Final geometry block title

(Character, maximum 100 characters)

 

fct_ID

Time function identifier

(Integer)

 

part_ID

Optional spring part identifier (Comment 5)

(Integer)

 

fct_IDL

Load time function identifier

(integer)

 

sens_ID

Sensor identifier

(Integer)

 

Ascale

Abscissa scale factor for fct_ID

Default = 1.0  (Real)

symbol_S_unit

T0

Time duration (Comment 3)

(Real)

symbol_S_unit

Tstart

Start time

(Real)

symbol_S_unit

FscaleL

Ordinate scale factor for fct_IDL

Default = 1.0  (Real)

 

Dmin

Distance between node_IDN and node_ID'N, which will be rigidly connected

(Real)

symbol_m

node_ID1

Node identifier

(Integer)

 

node_ID1

Node identifier giving the final position of node_IDN

(Integer)

 
hmtoggle_plus1Comments
1.A velocity is imposed to node_IDN in the direction of node_ID'N. The initial position of node_IDN and node_ID'N are provided in /NODE.
2.fct_ID defines the time evolution of the imposed velocity.
3.T0 is the duration used to compute a scale factor on the velocity of node_IDN. With d0 being the initial distance between node_IDN and node_ID'N:

4.Abcissa scale factor, Ascale is used to transform the function of time, as follows:

5.Initial node position node_IDN and final node position node_ID'N can be defined as a spring (node_IDN, node_ID'N) with zero stiffness. The spring part_ID is optional and can be used to simplify the input since a pre-processor can easily generate springs between an initial position and a final one.
6.fct_IDL defines the time evolution of an optional concentrated load applied on all destination nodes node_ID'N.