ElasticBeamColumn

This command is used to construct an elasticBeamColumn element object. The arguments for the construction of an elastic beam-column element depend on the dimension of the problem, ndm:

Model.element(“ElasticBeamColumn3D”,
   name,
   nodes,
   A,
   E,
   G,
   J,
   iyc,
   ixc,
   geom,
   cMass)

nodes		[iNode,jNode], iNode Ref(Node) jNode Ref(Node)
A	float	cross-sectional area
E	float	Young’s modulus of elasticity
G	float
J	float
iyc	float	Centroidal moment of inertia
ixc	float
geom	Ref(geomTransf)
mass = 0.0	float	element mass per unit length
cMass = False	bool	Flag indicating whether to use consistent mass matrix.

For a two-dimensional problem:

element elasticBeamColumn $eleTag $iNode $jNode $A $E $Iz
        $transfTag < -mass $massDens > < -cMass >

For a three-dimensional problem:

element elasticBeamColumn $eleTag $iNode $jNode $A $E $G
        $J $Iy $Iz $transfTag < -mass $massDens > < -cMass >

---

eleTag	unique element object tag
iNode jNode	end nodes
A	cross-sectional area of element
E	Young’s Modulus
G	Shear Modulus
J	torsional moment of inertia of cross section
Iz	second moment of area about the local z-axis
Iy	second moment of area about the local y-axis
transfTag	identifier for previously-defined coordinate-transformation (CrdTransf) object
massDens	element mass per unit length (optional, default = 0.0)
-cMass	to form consistent mass matrix (optional, default = lumped mass matrix)

NOTE:

The valid queries to an elastic beam-column element when creating an ElementRecorder object are ‘force’.

Examples

element elasticBeamColumn 1 2 4 5.5 100.0 1e6 9; # elastic element tag 1 between nodes 2 and 4 with area 5.5, E 100 and Iz 1e6 which uses transformation 9

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Code Developed by: fmk