Overall buckling characteristics of slender FRP-foam sandwich tube under axial compression

2021 ◽  
Vol 24 ◽  
pp. 100585
Author(s):  
Li Chen ◽  
Darong Pan ◽  
Qilin Zhao ◽  
Li Chen ◽  
Longlong Niu ◽  
...  
Keyword(s):  
Axial Compression ◽  
Overall Buckling

scholarly journals Overall buckling analysis on different formed circular steel tubular columns under axial compression

2019 ◽  
Vol 277 ◽  
pp. 03017
Author(s):  
Xi Feng Yan
Keyword(s):  
Numerical Analysis ◽  
Axial Compression ◽  
Experimental Studies ◽  
Three Dimensional ◽  
Element Model ◽  
Welded Steel ◽  
Eurocode 3 ◽  
Column Design ◽  
Hot Rolled ◽  
Overall Buckling

This paper presents a numerical finite element model (FEM) investigation on the overall buckling behaviour of hot-rolled (HR), submerged arc welded (SAW) and high-frequency welded (HFW) steel circular columns under axial compression. Three dimensional FEM of circular hollow sections were developed using shell elements considering material nonlinearities, geometric imperfections and residual stress. The established FEM was used to simulate experimental studies conducted by past researchers. Good agreement has been found between numerical analysis and past researchers results, which has validated the reasonability of the FEM to carry out further investigation. Based on the validated FEM, numerical analysis incorporating 180 numerical generated HR, SAW and HFW steel circular columns with various section sizes and slenderness were carried out. The numerical analysis results were compared with the existing column design curves in Chinese, European and American codes. The numerical results showed that the design resistances for hot-rolled and welded steel circular columns calculated based on design curve a in both GB 50017-2003 and Eurocode 3 and the design formula in ANSI/AISC 360-2016 should be accepted. In addition, to further improve the design efficiency, new column design curves for hot-rolled and welded steel circular columns were recommended based on the expressions in GB 50017-2003 and Eurocode 3.

Experimental Study on Axial Compression Performance of High-Strength Aluminum-Alloy Columns with H-Section

2013 ◽  
Vol 274 ◽  
pp. 459-462 ◽  
Author(s):  
Feng Fan ◽  
Yu Jin Wang ◽  
Li Lin ◽  
Hong Liang Qian
Keyword(s):  
Aluminum Alloy ◽  
Axial Compression ◽  
Failure Modes ◽  
High Strength ◽  
Tensile Tests ◽  
Test Program ◽  
Column Tests ◽  
Compression Performance ◽  
Heat Treated ◽  
Overall Buckling

This paper presents an experimental investigation of aluminum alloy H-type sections subjected to axial compression between two pinned ends. The specimens were fabricated using 6082-T6 heat-treated aluminum alloy. 26 material tensile tests were performed then a test program included 12 column tests which were separated into 6 test series of different geometry and ranged from 990 to 1840 mm in length in order to obtain a column curve. All the observed failure modes for the column tests were overall buckling and the axial capacities were obtained.

scholarly journals Overall buckling behaviour of laminated CFRP tubes with off-axis ply orientation in axial compression

2019 ◽  
Vol 26 (1) ◽  
pp. 230-239 ◽  
Author(s):  
Ruijie Zhu ◽  
Feng Li ◽  
Dongdong Zhang
Keyword(s):  
Axial Compression ◽  
Test Data ◽  
Slenderness Ratio ◽  
High Stress ◽  
Reduction Factor ◽  
Compression Tests ◽  
Future Design ◽  
High Stress Level ◽  
Cfrp Tubes ◽  
Overall Buckling

AbstractThis paper presents an experimental investigation of overall buckling behaviour of carbon fibre reinforced plastic (CFRP) tubes with different off-axis ply orientations. A series of specimens are designed and prepared with stacking sequences [0∘4/±θ∘], with θ corresponding to either 0, 90, 45 or 60. Axial compression tests with effective end-reinforcement and hinge support are performed to investigate the overall buckling behaviour. With respect to the future design and application of CFRP tubes with this type of stacking sequence, column curves for each stacking sequences and all test data are fitted based on Perry-Robertson formula. With respect to the high stress level in the relatively short CFRP tube that facilitates the development of defects, test data present high levels of discreetness. We propose a strategy for engineering safe design in which a reduction factor is added to the original reduction factor based on statistical analysis when the universal slenderness ratio is less than 2.

scholarly journals Numerical investigation of post-critical resistance of hollow circular cross-section bars under bending and axial compression

2020 ◽  
Vol 17 (5) ◽  
pp. 87-93
Author(s):  
A. I. Garipov ◽  
Keyword(s):  
Finite Element Method ◽  
Axial Compression ◽  
Cross Section ◽  
Laboratory Tests ◽  
Circular Cross Section ◽  
The Finite Element Method ◽  
Qualitative Comparison ◽  
Optimal Balance ◽  
Overall Buckling ◽  
Critical Resistance

Analysis results of hollow circular cross-section bars under bending and axial compression by the finite element method in different formulations with considering of overall buckling described. Qualitative comparison of the data obtained with the data of laboratory tests is made. Analysis parameters allowing achieving an optimal balance between analysis accuracy and speed are given.

Overall buckling prediction model for fibre reinforced plastic laminated tubes with balanced off-axis ply orientations based on Puck failure criteria

2019 ◽  
Vol 54 (7) ◽  
pp. 883-897 ◽  
Author(s):  
Ruoyu Li ◽  
Ruijie Zhu ◽  
Feng Li
Keyword(s):  
Prediction Model ◽  
Axial Compression ◽  
Transverse Shear ◽  
Failure Modes ◽  
Failure Criteria ◽  
Shear Effect ◽  
Compression Tests ◽  
Reinforced Plastic ◽  
Overall Buckling ◽  
Ply Orientation

Fibre reinforced plastic tubes with balanced off-axis ply orientation exhibit excellent mechanical properties and are widely used in various types of structures. In this study, a theoretical prediction model was proposed to determine the overall buckling load and the failure mode of fibre reinforced plastic laminated tubes with off-axis ply orientation under axial compression. This model considers the transverse shear effect and adopts Puck failure criteria to perform an analysis based on deduced three-dimensional stress and strain fields. A series of carbon fibre reinforced plastics tubes with varying off-axis ply orientations and lengths were designed and prepared. Axial compression tests with effective end-reinforcement and hinge support were performed to validate the proposed prediction model. The results indicated that the predicted model results were in good agreement with the test results, with respect to ultimate loads, failure modes, and locations of failure. Parametric analysis on the influence of transverse shear effect was also conducted, which further explained the influencing degree of transverse shear effect considering different tube lengths, ply sequences, and initial deflection.

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