GEOMETRY_SPHERE

Geometries

*GEOMETRY_SPHERE
"Optional title"
gid, csysid
$x$, $y$, $z$, $R_1$, $R_2$

Parameter definition

Variable
Description
gid
Geometry identification number
csysid
Local coordinate system ID
default: global coordinate system is used
$x$, $y$, $z$
Sphere center coordinate
$R_1$
Sphere radius 1
$R_2$
Sphere radius 2

Description

This command is used to define a sphere in space, with its center at ($x$, $y$, $z$) and with inner radius min$(R_1,R_2)$ and outer radius max$(R_1,R_2)$.

Example

Sphere with inner and outer radius

Example where GEOMETRY_SPHERE is used to specify a region in which element polynomial order is changed. An inner and outer radius is defined so that only the elements inside the geometry are affected.

*UNIT_SYSTEM SI *COMPONENT_SPHERE "Sphere with radius 4" 1, 1, 4 1.0, 2.0, 3.0, 4.0 *PART 1, 1, , , 45 *MAT_RIGID 1, 7800 *GEOMETRY_SPHERE "Specify region to change polynomial order" 123 1.0, 2.0, 3.0, 5.0, 2.5 *CHANGE_P-ORDER "Changing from linear to cubic elements" P, 1, 3, 123 *END