/INIBRI/EREF

Block Format Keyword Describes the initial reference state for solid element using global strain formulation.

Format

(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)
/INIBRI/EREF/`unit_ID`
`brick_ID`		`Isolnod`	`Isolid`	`Ismstr`	`Nsrot`

For each node of the solid element (Isolnod lines)

(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)
	`Xc`		`Yc`		`Zc`

For each node with rotational degree of freedom (Nsrot lines)

(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)
	`Rx`		`Ry`		`Rz`

Field	Contents	SI Unit Example
`unit_ID`	Unit Identifier. (Integer, maximum 10 digits)
`brick_ID`	Element identifier. (Integer)
`Isolnod`	Number of nodes of solid element. (Integer)
`Isolid`	Solid element formulation. Corresponding to the solid formulation of the property definition of this element. (Integer)
`Ismstr`	Small strain formulation flag. Corresponding to the small strain formulation of the property definition of this element. (Integer)
`Nsrot`	Number of nodes with rotational degree of freedom. (Integer)
`Xc`	X coordinate in the global coordinate system relative to the last node coordinate of the solid element. (Real)	$[m]$
`Yc`	Y coordinate in the global coordinate system relative to the last node coordinate of the solid element. (Real)	$[m]$
`Zc`	Z coordinate in the global coordinate system relative to the last node coordinate of the solid element. (Real)	$[m]$
`Rx`	Historic X rotation in the global coordinate. (Real)	$[rad]$
`Ry`	Historic Y rotation in the global coordinate. (Real)	$[rad]$
`Rz`	Historic Z rotation in the global coordinate. (Real)	$[rad]$

The initial state for brick may be defined by more than one block.
The reference state nodal coordinate must be written in the same order from 1 to Isolnod as it is defined in the solid element card.
The coordinate of the last node of the solid element is 0, 0, 0. The coordinates of the other nodes of the element are defined relative to this node.
Nsrot=4 has been used for the case of I_tetra4=1, where the rotational dofs are used for fictive middle node kinematic compute.