2022

2022

/INISHE/STRA_F or /INISH3/STRA_F

Block Format Keyword This describes the initial state for strain.

Format

(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)
/INISHE/STRA_F/`unit_ID` or /INISH3/STRA_F/`unit_ID`
`shell_ID`	`nb_integr`	`npg`	`Thick`

For each integration point (Nb_integr > 0)

(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)
$ε$ ₁		$ε$ ₂		$ε$ ₁₂		$ε$ ₂₃		$ε$ ₃₁
$κ_{1}$		$κ_{2}$		$κ_{12}$

Definitions

Field	Contents	SI Unit Example
`unit_ID`	Unit Identifier. (Integer, maximum 10 digits)
`shell_ID`	Element identifier. (Integer)
`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. = 0 (Default) Set to 1 = 1 Must be used for shell formulations `I`_shell =1, 2, 3, 4, 24 or `I`_sh3n =1, 2, 31 = 3 Must be used for DKT18 shell formulation (`I`_sh3n =30) = 4 Must be used for BATOZ formulation (`I`_shell =12) (Integer)
`Thick`	Shell thickness. Will be used instead of the thickness given into property or in the shell definition. (Real)	$[m]$
$ε$ ₁	Membrane strain in 1st direction. (Real)
$ε$ ₂	Membrane strain in 2nd direction. (Real)
$ε$ ₁₂	Membrane shear strain. (Real)
$ε$ ₂₃	Shear strain in direction 23. (Real)
$ε$ ₃₁	Shear strain in direction 31. (Real)
$κ_{1}$	Bending strain in direction 1. (Real)
$κ_{2}$	Bending strain in direction 2. (Real)
$κ_{12}$	Bending strain in direction 12. (Real)

Comments

For npg = 3 or 4, the optional continuation lines must be repeated npg times for each integration point.
The initial state for shells may be defined by more than one block.