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This command is used to construct a zeroLength element object, which is defined by two nodes at the same location. The nodes are connected by multiple UniaxialMaterial objects to represent the force-deformation relationship for the element.
element zeroLength $eleTag $iNode $jNode -mat $matTag1 $matTag2 ... -dir $dir1 $dir2 ... <-orient $x1 $x2 $x3 $yp1 $yp2 $yp3>
$eleTag |
unique element object tag |
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$iNode |
$jNode |
end nodes |
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$matTag1 $matTag2 ... |
tags associated with previously-defined UniaxialMaterials |
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$dir1 $dir2 ... |
material directions: |
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1,2,3 |
translation along local x,y,z axes, respectively |
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4,5,6 |
rotation about local x,y,z axes, respectively |
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the orientation vectors can be specified for the element (optional): |
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$x1 $x2 $x3 |
vector components in global coordinates defining local x-axis (vector x) |
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$yp1 $yp2 $yp3 |
vector components in global coordinates defining vector yp which lies in the local x-y plane for the element: |
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the local z-axis is defined by the cross product between the vectors x and yp |
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If the optional orientation vectors are not specified, the local element axes coincide with the global axes.
The valid queries to a zero-length element when creating an ElementRecorder object are 'force,' 'deformation,' 'stiff,' and 'material $matNum matArg1 matArg2 ...' Where $matNum is the tag associated with the material whose data is to be output.
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