ElasticTubularJoint

This command is used to construct an ElasticTubularJoint element object, which models joint flexibility of tubular joints in two dimensional analysis of any structure having tubular joints.

element ElasticTubularJoint $tag $iNode $jNode $Brace_Diameter $Brace_Angle $E $Chord_Diameter $Chord_Thickness $Chord_Angle

Python:

model.element('ElasticTubularJoint', tag, (iNode, jNode), Brace_Diameter, Brace_Angle, E, Chord_Diameter, Chord_Thickness, Chord_Angle)

where:

Argument	Type	Description
$eleTag	integer	Unique element object tag
$iNode	integer	First end node- it is always located on the chord axis
$jNode	integer	Second end node - it is always located on the chord wall
$Brace_Diameter	float	Outer diameter of brace
$Brace_Angle	float	Angle between brace and chord axis 0 < Brace_Angle < 90
$E	float	Young’s Modulus
$Chord_Diameter	float	Outer diameter of chord
$Chord_Thickness	float	Thickness of chord
$Chord_Angle	float	Angle between chord axis and global x-axis 0 < Chord_Angle < 180

Examples

The following example constructs constructs a ElasticTubularJoint joint element with element tag 1, that is connected to nodes 1 and 2. The brace diameter is 0.25 m, intersection angle is 45 degrees, Young’s modulus is 210e9, outer diameter and thickness of the chord are 0.50 m and 0.016 m respectively, and angle between chord axis and global horizontal axis is 45 degrees.

1. Tcl

element ElasticTubularJoint 1 1 2 0.25 45 210E+09 0.5 0.016 45;

2. Python

element('ElasticTubularJoint', 1, 1, 2, 0.25, 45, 210E+09, 0.5, 0.016, 45)

References

More information available in the following reference:

1. Alanjari, P., Asgarian, B., & Salari, N. (2015). Elastic tubular joint element for modelling of multi-brace, uni-planar tubular connections. Ships and Offshore Structures, 10(4), 404–415. https://doi.org/10.1080/17445302.2014.942077

Code developed by: M. Kia and P. Alanjari, Sharif University of Technology and K. N. Toosi University of Technology, Tehran, Iran.