Static Strength of Elliptical Chords T-Tubular Joints Subjected to Mechanical Loading
T-Tubular joints of elliptical and circular cross-section tubes for the main tube (chord) with circular cross-section tubes for the braces have been studied. Experimental tests for the joint strength of these welded T-joints under tension, compression, in plane bending and out of plane bending ha...
Saved in:
| Main Author: | |
|---|---|
| Format: | Thesis |
| Language: | English English |
| Published: |
1999
|
| Subjects: | |
| Online Access: | http://psasir.upm.edu.my/id/eprint/10369/1/FK_1999_36_A.pdf |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| id |
my-upm-ir.10369 |
|---|---|
| record_format |
uketd_dc |
| spelling |
my-upm-ir.103692011-08-10T07:06:35Z Static Strength of Elliptical Chords T-Tubular Joints Subjected to Mechanical Loading 1999-11 Hamed, Abdalla F. T-Tubular joints of elliptical and circular cross-section tubes for the main tube (chord) with circular cross-section tubes for the braces have been studied. Experimental tests for the joint strength of these welded T-joints under tension, compression, in plane bending and out of plane bending have been carried out. A rig has been designed and built for that purpose. Three cases of T-joint connections were selected. For Case 1, the brace was perpendicular to the circular chord outer diameter. For Case 2, the brace was perpendicular to elliptical chord minor diameter and for Case 3, the brace was perpendicular to elliptical chord major diameter. The chord was held as fixed-fixed for all cases. The material used for all tubes was mild steel. The ultimate loads and ultimate moments obtained from the tests are converted to non-dimensional strengths throughout this investigation. This was done to make efficient comparisons. Finite element models for similar T -joints have been developed and used to analyze the effect of axial loading and bending moment. Tension, compression, in plane bending and out-of-plane bending load modes were studied. A comparison between experimental results and finite element analysis was also carried out. Another comparison between experimental results and existing empirical equation results for similar circular chords tubular joints was also carried out. The results extracted from this study for tension, compression, in-plane bending and out-of-plane bending modes for the ultimate loads and moments of Case 1, are 53.85 kN, 25.43 kN, 0.76 kN.m and 0.40 kN.m respectively. On the other hand, the results for Case 2 of the ultimate loads and moments are 42.48 kN, 1 8.39 kN, 0.63 kN.m and 0.37 kN.m respectively. While for Case 3 the ultimate loads and moments are 64.86 kN, 28.95 kN, 1.00 kN.m and 0.55 kN.m respectively. The results obtained show that for axial tension and compression loading modes, Case 3 increases by 17.0% and 12.2% respectively when compared to Case 1 while 24.0% and 27.3% increase were found for in-plane and out-of-plane bending load modes respectively. This shows a significant improvement in the static strength for elliptical chords tubular joints (Case 3) under different loading modes when compared to circular chords tubular joints (Case 1). Joints (Engineering) 1999-11 Thesis http://psasir.upm.edu.my/id/eprint/10369/ http://psasir.upm.edu.my/id/eprint/10369/1/FK_1999_36_A.pdf application/pdf en public masters Universiti Putra Malaysia Joints (Engineering) Faculty of Engineering English |
| institution |
Universiti Putra Malaysia |
| collection |
PSAS Institutional Repository |
| language |
English English |
| topic |
Joints (Engineering) |
| spellingShingle |
Joints (Engineering) Hamed, Abdalla F. Static Strength of Elliptical Chords T-Tubular Joints Subjected to Mechanical Loading |
| description |
T-Tubular joints of elliptical and circular cross-section tubes for the main
tube (chord) with circular cross-section tubes for the braces have been studied.
Experimental tests for the joint strength of these welded T-joints under
tension, compression, in plane bending and out of plane bending have been carried
out. A rig has been designed and built for that purpose. Three cases of T-joint
connections were selected. For Case 1, the brace was perpendicular to the circular
chord outer diameter. For Case 2, the brace was perpendicular to elliptical chord
minor diameter and for Case 3, the brace was perpendicular to elliptical chord major
diameter. The chord was held as fixed-fixed for all cases. The material used for all
tubes was mild steel. The ultimate loads and ultimate moments obtained from the
tests are converted to non-dimensional strengths throughout this investigation. This
was done to make efficient comparisons. Finite element models for similar T -joints have been developed and used to
analyze the effect of axial loading and bending moment. Tension, compression, in plane
bending and out-of-plane bending load modes were studied.
A comparison between experimental results and finite element analysis was
also carried out. Another comparison between experimental results and existing
empirical equation results for similar circular chords tubular joints was also carried
out.
The results extracted from this study for tension, compression, in-plane
bending and out-of-plane bending modes for the ultimate loads and moments of Case
1, are 53.85 kN, 25.43 kN, 0.76 kN.m and 0.40 kN.m respectively. On the other
hand, the results for Case 2 of the ultimate loads and moments are 42.48 kN, 1 8.39
kN, 0.63 kN.m and 0.37 kN.m respectively. While for Case 3 the ultimate loads and
moments are 64.86 kN, 28.95 kN, 1.00 kN.m and 0.55 kN.m respectively.
The results obtained show that for axial tension and compression loading
modes, Case 3 increases by 17.0% and 12.2% respectively when compared to Case 1
while 24.0% and 27.3% increase were found for in-plane and out-of-plane bending
load modes respectively. This shows a significant improvement in the static strength
for elliptical chords tubular joints (Case 3) under different loading modes when
compared to circular chords tubular joints (Case 1). |
| format |
Thesis |
| qualification_level |
Master's degree |
| author |
Hamed, Abdalla F. |
| author_facet |
Hamed, Abdalla F. |
| author_sort |
Hamed, Abdalla F. |
| title |
Static Strength of Elliptical Chords T-Tubular Joints Subjected to Mechanical Loading |
| title_short |
Static Strength of Elliptical Chords T-Tubular Joints Subjected to Mechanical Loading |
| title_full |
Static Strength of Elliptical Chords T-Tubular Joints Subjected to Mechanical Loading |
| title_fullStr |
Static Strength of Elliptical Chords T-Tubular Joints Subjected to Mechanical Loading |
| title_full_unstemmed |
Static Strength of Elliptical Chords T-Tubular Joints Subjected to Mechanical Loading |
| title_sort |
static strength of elliptical chords t-tubular joints subjected to mechanical loading |
| granting_institution |
Universiti Putra Malaysia |
| granting_department |
Faculty of Engineering |
| publishDate |
1999 |
| url |
http://psasir.upm.edu.my/id/eprint/10369/1/FK_1999_36_A.pdf |
| _version_ |
1747811106932391936 |