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/MPC

/MPC

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Block Format Keyword

/MPC - Multi-Point Constraints

Description

Defines multi-point constraints on nodes.

Format

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

/MPC/MPC_ID

MPC_title

Card 1 to N

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

node_ID1

Idof1

skew_ID1

 

 

 

 

 

node_ID2

Idof2

skew_ID2

 

 

 

 

 

...

...

...

...

 

 

 

 

 

node_IDN

IdofN

skew_IDN

 

 

 

 

 
hmtoggle_plus1 Flag Definition

Field

Contents

MPC_ID

Multi-point constraint identifier

(Integer, maximum 10 digits)

MPC_title

Multi-point constraint title

(Character, maximum 100 characters)

node_IDi

Node identifier

(Integer)

Idofi

Degree-of-freedom (velocity direction)

(Integer)

skew_IDi

Local skew (for each DOF)

(Integer)

Scale coefficient

(Real)
hmtoggle_plus1Comments
1.This option is not available if it is applied on:
•a translational DOF of a node with a null mass
•a rotational DOF of a node with a null inertia
2.User-defined linear relation between nodal velocities.
3.The N formats are necessary to define a kinematic relation between N velocity components. Each term may be expressed in its own local skew system (skew_ID):

mpc_equat

isk = skew_ID

Idof = 1...6

1...3: translational velocity

4...6: rotational velocity

See Also:

Implicit Features and Compatibility Information

Skew and Frame (/SKEW & /FRAME)

Multi-Point Constraints in User's Guide