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GEOMETRY_SPHERE

Geometries
*GEOMETRY_SPHERE
"Optional title"
gid, csysid
$x$, $y$, $z$, $R_1$, $R_2$
Parameter definition
VariableDescription
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