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. 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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$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)

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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