Layer Command

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The layer command is used to generate a number of fibers along a line or a circular arc.

This command is used to construct a straight line of fibers:

layer straight $matTag $numFiber $areaFiber $yStart $zStart $yEnd $zEnd



$matTag material tag of previously created uniaxial material.
$numFibers number of fibers along line
$areaFiber area of each fiber
$yStart $zEnd y and z-coordinates of first fiber in line (local coordinate system)
$$yEnd $zEnd y and z-coordinates of last fiber in line (local coordinate system)


This command is used to construct a line of fibers along a circular arc:

layer circ $matTag $numFiber $areaFiber $yCenter $zCenter $radius <$startAng $endAng>


$matTag material tag of previously created uniaxial material.
$numFiber number of fibers along arc
$areaFiber area of each fiber
$yCenter $zCenter y and z-coordinates of center of circular arc
$radius radius of circlular arc
$startAng starting angle (optional, default = 0.0)
$endAng starting angle (optional, default = 360.0 - 360/$numFiber)



NOTES:




EXAMPLE:

layer straight $steelMatTag 10 0.11 -b -h b -h; # define steel layer of 10 bars with area 0.11 at bottom of section of width 2b by 2h

layer circ $steelMatTag 10 0.11 0.0 0.0 $h 0 360; # define circular steel layer of 10 bars with area 0.11 uniformly distributed along circumference of circle of diameter 2h



Code Developed by: Remo M. De Souza