CFSWSWP

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This command is used to construct a uniaxialMaterial model that simulates the hysteresis response (Shear strength-Lateral displacement) of a wood sheathed cold-formed steel shear wall panel (CFS-SWP). The hysteresis model has smooth curves and takes into account the strength and stiffness degradation, as well as pinching effect.

uniaxialMaterial CFSWSWP $tag $height $width $fut $tf $Ife $Ifi $ts $np $ds $Vs $sc $nc $type $openingArea $openingLength

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Code Developed by: Smail Kechidi and Nouredine Bourahla, University of Blida 1, Algeria

Images Developed by: Smail Kechidi, University of Blida 1

$matTag	Integer identifier used to tag the material model
$height	SWP’s height (mm)
$width	SWP’s width (mm)
$fuf	Tensile strength of framing members (MPa)
$tf	Framing thickness (mm)
$Ife	Moment of inertia of the double end-stud (mm4)
$Ifi	Moment of inertia of the intermediate stud (mm4)
$ts	Sheathing thickness (mm)
$np	Sheathing number (one or two sides sheathed)
$ds	Screws diameter (mm)
$Vs	Screws shear strength (N)
$sc	Screw spacing on the sheathing perimeter (mm)
$nc	Total number of screw on the sheathing
$type	Integer identifier used to define wood sheathing type (DFP=1, OSB=2, CSP=3)
$openingArea	Total area of openings (mm²)
$openingLength	Cumulative length of openings (mm)