Card 9 - MATVEC Material Orientation Definition

KODE

KODE is the code MATVEC (or 35)

N1

N1 is an element number or a group name to which the MATVEC card applies.

Option 1

Defines the element material's principal directions in the element's local coordinate system.

T1 is the angle THETA (degrees), which is the angle the material's thermal conductivity in the Xmat direction makes with nodes 1 and 2. The material's thermal conductivity in the Ymat direction lies in the plane of the element.

T2-T4 must all be blank.

Option 2

Defines the material's directions in the global coordinate system. Two vectors P1 and P2 are defined in the spherical global coordinate system. P1 defines the material's Zmat axis, while P2 lies on the material's XmatZmat plane on the +Xmat side of the plane.

T1 is THETA1, the angle in degrees P1 makes with the global Z axis.

T2 is PHI1, the angle in degrees the projection of P1 onto the global XY plane makes with the global X axis.

T3 is THETA2, the angle in degrees P2 makes with the global Z axis.

T4 is PHI2, the angle in degrees the projection of P2 onto the global XY plane makes with the global X axis.

Code example

$CARD 5
345 SURFACE M1 0 P1 1 2 3 4      
$ ELEMENT 345 THERMAL CONDUCTIVITIES DEFINED
$ ON MAT CARD 1
|
|
$CARD 9
MAT 1 0 0 0 0 12 13 14   
$ MATERIAL 1 IS ORTHOTROPIC, WITH THERMAL
$ CONDUCTIVITIES OF 12, 13, AND 14 IN THE
$ MATERIAL'S X, Y, AND Z DIRECTIONS.
$
MATVEC 345 5 10 15 20    
$ ELEMENT 345 HAS ITS MATERIAL AXES
$ DEFINED IN GLOBAL SPHERICAL COORDINATES