3.1.10.25. ElasticTubularJoint Element

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.

3.1.10.25.1. Command Lines

TCL:

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

Python:

element('ElasticTubularJoint', eleTag, 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

3.1.10.25.2. Examples

Command Lines

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.