Block Format Keyword
/INISHE/STRA_F or /INISH3/STRA_F - Initial State for Strain
Description
This describes the initial state for strain.
Format
(1)
|
(2)
|
(3)
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(4)
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(5)
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(6)
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(7)
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(8)
|
(9)
|
(10)
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/INISHE/STRA_F/unit_ID or
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/INISH3/STRA_F/unit_ID
|
shell_ID
|
nb_integr
|
npg
|
Thick
|
|
|
|
|
|
For each integration Point (Nb_integer > 0)
(1)
|
(2)
|
(3)
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(4)
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(5)
|
(6)
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(7)
|
(8)
|
(9)
|
(10)
|
 1
|
2
|
12
|
23
|
31
|
 1
|
2
|
12
|
|
|
|
|
Field
|
Contents
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SI Unit Example
|
unit_ID
|
Optional unit identifier
(Integer, maximum 10 digits)
|
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shell_ID
|
Element identifier
(Integer)
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|
nb_integr
|
Integration point number through the thickness
It corresponds to the property definition of this element. Must be equal to the number of integration points given in the shell property.
(Integer)
|
|
npg
|
Number of surface quadrature points
Must be set according to the formulation which is used in the shell property.
(Integer)
= 0: default set to 1
= 1: must be used for shell formulations Ishell =1, 2, 3, 4, 24 or Ish3n =1, 2, 31
= 3: must be used for DKT18 shell formulation (Ish3n =30)
= 4: must be used for BATOZ formulation (Ishell =12)
|
|
Thick
|
Shell thickness. Will be used instead of the thickness given into property or in the shell definition.
(Real)
|
|
1
|
Membrane strain in 1st direction
(Real)
|
|
2
|
Membrane strain in 2nd direction
(Real)
|
|
12
|
Membrane shear strain
(Real)
|
|
23
|
Shear strain in direction 23
(Real)
|
|
31
|
Shear strain in direction 31
(Real)
|
|
1
|
Bending strain in direction 1
(Real)
|
|
2
|
Bending strain in direction 2
(Real)
|
|
12
|
Bending strain in direction 12
(Real)
|
|
|
| 1. | For npg = 3 or 4, the optional continuation lines must be repeated npg times for each integration point. |
| 2. | The initial state for shells may be defined by more than one block. |
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