CFSSSWP

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This command is used to construct a uniaxialMaterial model that simulates the hysteresis response (Shear strength-lateral Displacement) of a steel sheathed Cold-Formed Steel Shear Wall Panel. The hysteresis model has smooth curves and takes into account the strength and stiffness degradation, as well as pinching effect.

uniaxialMaterial CFSSSWP $tag $height $width $fuf $fyf $tf $Af $fus $fys $ts $np $ds $Vs $sc $dt $openingArea $openingLength

$tag 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)

$fyf Yield strength of framing members (MPa)

$tf Framing thickness (mm)

$Af Framing cross section area (mm²)

$fus Tensile strength of steel sheet sheathing (MPa)

$fys Yield strength of steel sheet sheathing (MPa)

$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)

$dt Anchor bolt’s diameter (mm)

$openingArea Total area of openings (mm²)

$openingLength Cumulative length of openings (mm)

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