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Up: Using FEMGEN with PATRAN
Previous: Physical Property Definition and
The FEMGEN to PATRAN interface supports most PATRAN Neutral File load types which all have a similar syntax thus:
PROPERTY LOADS TYPE [loadcase-number] [load-name] part-name load-definition
The load name is optional and the default is 'LOnn' where nn is an integer which is automatically incremented for each successive load. The part name must always be supplied and will be either a geometric part or a set of parts.
Load Masks, Local Coordinate Systems and Space Curves, defined with FEMGEN 'CONSTRUCT' command, can be attached to loads using the FEMGEN command 'PROPERTY ATTACH'. The interface program supports these new features for most loads. More detailed information on advanced loading may be found in the FEMGV User Manual.
Use the FEMGEN command PROPERTY LOAD DLOAD, where the load definition is as follows:
p1 dof [p-nam1] [p-nam2] [p2]
Where p1 is the pressure and dof is the direction in the element local system. The value of dof can be 0, 1 or X, 2 or Y, 3 or Z, 4 or RX, 5 or RY, 6 or RZ and indicates the pressure direction to be normal, local x, local y, local z, local x moment, local y moment, local z moment.
For beams use dof=1, 2, or 3 for local x, y, or z.
For 2D plate edges use dof=1 for local x, and dof=0 for normal/local y
For 3D plate faces use dof=0 for normal/local z
For 3D brick faces use dof=1 for local x, dof=2 for local y, and dof=0 for normal/local z.
For beams, dof=0 is not allowed and edge loads of any dof are not allowed on brick elements.
A linear variation of this pressure can optionally be defined from p1 at p-nam1 to p2 at p-nam2.
Local Coordinate System attached to Pressure load is not supported.
Use the FEMGEN command PROPERTY LOAD NFORCE, where the load definition is as follows:
fx1 fy1 fz1 [p-nam1] [p-nam2] [fx2 fy2 fz2]
Where fx1,fy1,fz1 is the nodal force vector in the global coordinate system. A linear variation of this vector can optionally be defined from fx1,fy1,fz1 at p-nam1 to fx2,fy2,fz2 at p-nam2.
Use the FEMGEN command PROPERTY LOAD NDISPLAC, where the load definition is as follows:
dx1 dy1 dz1 [p-nam1] [p-nam2] [dx2 dy2 dz2]
Where dx1,dy1,dz1 is the nodal displacement vector in the global coordinate system. A linear variation of this vector can optionally be defined from dx1,dy1,dz1 at p-nam1 to dx2,dy2,dz2 at p-nam2.
Use the FEMGEN command PROPERTY LOAD NTEMP, where the load definition is as follows:
temp1 [p-nam1] [p-nam2] [temp2]
Where temp1 is the nodal temperature. A linear variation of temperature can optionally be defined from temp1 at p-nam1 to temp2 at p-nam2.
Use the FEMGEN command PROPERTY LOAD ETEMP, where the load definition is as follows:
temp1 [p-nam1] [p-nam2] [temp2]
Where temp1 is the element temperature. A linear variation of temperature can optionally be defined from temp1 at p-nam1 to temp2 at p-nam2.
Use the FEMGEN command PROPERTY LOAD NHEAT, where the load definition is as follows:
heat1 [p-nam1] [p-nam2] [heat2]
Where heat1 is the nodal heat load. A linear variation can optionally be defined from heat1 at p-nam1 to heat2 at p-nam2.
Use the FEMGEN command PROPERTY LOAD DHEAT, where the load definition is as follows:
heat1 [p-nam1] [p-nam2] [heat2]
Where heat1 is the distributed heat load. A linear variation can optionally be defined from heat1 at p-nam1 to heat2 at p-nam2.
Use the FEMGEN command PROPERTY LOAD CONVECT, where the load definition is as follows:
con1 [p-nam1] [p-nam2] [con2]
Where con1 is the convection load. A linear variation can optionally be defined from con1 at p-nam1 to con2 at p-nam2.
Use the FEMGEN command PROPERTY LOAD RADIATE, where the load definition is as follows:
rad1 [p-nam1] [p-nam2] [rad2]
Where rad1 is the radiation load. A linear variation can optionally be defined from rad1 at p-nam1 to rad2 at p-nam2.
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