3.1.10.61. MultipleShearSpring Element

This command constructs a multiple shear spring (MSS) element consisting of identical shear springs arranged radially to represent isotropic behavior in the local y-z plane. The command name MSS is an alias for multipleShearSpring.

element multipleShearSpring $eleTag $iNode $jNode $nSpring -mat $matTag <-lim $dsp> <-orient <$x1 $x2 $x3> $yp1 $yp2 $yp3> <-mass $m>

Argument	Type	Description
$eleTag	integer	unique element tag
$iNode $jNode	integer	end nodes
$nSpring	integer	number of radial shear springs
$matTag	integer	tag of a previously defined uniaxial material (-mat)
$dsp	float	minimum deformation to compute equivalent coefficient (optional; default 0.0)
$m	float	element mass (optional)

Note

1. When $dsp is positive and shear deformation exceeds $dsp; the element adjusts force and stiffness to reproduce monotonic uniaxial material behavior in every direction.

2. Valid Element Recorder queries include globalForce, localForce, basicForce, localDisplacement, and basicDeformation.

Example

1. Tcl Code

element multipleShearSpring 1 1 2 16 -mat 1

2. Python Code

element('multipleShearSpring', 1, 1, 2, 16, '-mat', 1)

Code developed by: Masaru Kikuchi