Layer Command

• Command_Manual
  • Tcl Commands
  • Modeling_Commands
    • model
    • uniaxialMaterial
    • ndMaterial
    • frictionModel
    • section
    • geometricTransf
    • element
    • node
    • sp commands
      • fix
      • fixX
      • fixY
      • fixZ
    • mp commands
      • equalDOF
      • rigidDiaphragm
      • rigidLink
    • timeSeries
    • pattern
    • mass
    • block commands
      • block2D
      • block3D
    • region
    • rayleigh
  • Analysis Commands
    • constraints Command
    • numberer Command
    • system Command
    • test Command
    • algorithm Command
    • integrator Command
    • analysis Command
    • eigen Command
    • analyze Command
  • Output Commands
    • recorder
    • record
    • print
    • printA
    • logFile
    • RealTime_Output_Commands
  • Misc Commands
    • eleResponse Command
    • getTime Command
    • getEleTags Command
    • getNodeTags
    • loadConst Command
    • nodeCoord Command
    • nodeDisp Command
    • nodeVel Command
    • nodeAccel Command
    • nodeEigenvector Command
    • nodeBounds
    • print Command
    • remove Command
    • reset Command
    • testIter
    • testNorms
    • wipe Command
    • exit Command
  • DataBase Commands
    • Template:DataBaseCommandsMenu

---

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