/INTER/LAGMUL/TYPE16

Block Format Keyword

/INTER/LAGMUL/TYPE16 - Interface Type 16 - Node to Brick Contact Interface

Description

This interface simulates impact between nodes and external surfaces of brick. The external surfaces can be 16-node thick shell element, 20-node brick element, 8-node brick or 8-node thick shell element. This interface uses Lagrange multiplier kinematical conditions. These kinematical conditions are only compatible with other Lagrange multipliers kinematical conditions. This interface formulation is not compatible with SPMD parallel version.

Format

(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)
/INTER/LAGMUL/TYPE16/inter_ID/unit_ID
inter_title
grnd_IDs	grbrc_IDm
		ITIED

Field	Contents
inter_ID	Interface identifier (Integer, maximum 10 digits)
unit_ID	Optional unit identifier (Integer, maximum 10 digits)
inter_title	Interface title (Character, maximum 100 characters)
grnd_IDs	Slave nodes group identifier (Integer)
grbrc_IDm	Master brick element identifier (Integer)
ITIED	Tied option flag (Integer) = 0: sliding = 1: tied - the slave node is tied during impact with possible rebound.

1.	For brick elements (8-nodes, 20-nodes), contact is only considered on face 1-2-3-4 and 5-6-7-8.

2.	For thick shell elements (8-nodes, 16-nodes), contact only occurs on top and bottom surface (1-2-3-4 and 5-6-7-8).

3.	The defined nodes must have non-zero mass.

4.	The following kinematic conditions can be used with Lagrange multipliers:

•	Interface TYPE16

•	Interface TYPE17

•	Interface TYPE2

•	Interface TYPE7

•	Boundary condition

•	Rigid body

•	Imposed velocity

•	Rigid wall

•	General joints

•	Multi-point constraints