Web crippling of aluminium tubular structural members strengthened by CFRP (original) (raw)

FRP strengthened aluminium tubular sections subjected to web crippling

Thin-Walled Structures, 2011

This paper presents a test programme on aluminium tubular structural members that have experienced web crippling failure due to localized concentrated loads or reactions. A series of tests was performed on fibre-reinforced polymer (FRP) strengthening of aluminium ...

Optimisation of the rivet joints of the CFRP composite material and aluminium alloy

… of Achievements in …, 2007

Purpose: The project included analysis of strain, cracking, and failure of riveted joints of plate elements made from the carbon-fibre-reinforced plastics (CFRP) and from the 6061 aluminium alloy. Design/methodology/approach: The modelled static tensile strength test carried out for the plates from CFRP and from the 6061 aluminium alloy joined with the steel rivet. Computer simulation was carried out with IDEAS software package employing the FEM. Findings: Simulations using the mesh with a bigger number of FEM elements do not yield better accuracy of calculations and do not improve convergence with the results of laboratory experiments. Only the calculation time gets longer. Computer simulation has also show that the type of contacts employed between elements affects the results significantly. Research limitations/implications: For the composite materials, joints between materials and computer simulation examinations are planed. Practical implications: Results obtained for the mesh with 4 and 5 FEM elements are the closest to the results of laboratory experiments, which is confirmed by the strain plot. Simulations using the mesh with a bigger number of FEM elements do not yield better accuracy of calculations and do not improve convergence with the results of laboratory experiments. Only the calculation time gets longer. Computer simulation has show that the type of contacts employed between elements affects the results significantly. Originality/value: The paper presents influence of fibre mesh closeness on convergence of the results with laboratory tests. Simulation results were collected and compared with the laboratory static tensile strength tests results.

Optimization of the rivet joints of the CFRP composite material and aluminium alloy

Journal of Achievements in Materials and Manufacturing Engineering, 2007

CFRP strengthening of steel plate girders with web openings subjected to shear and bending

IOP Conference Series: Materials Science and Engineering, 2020

The present study illustrates the effect of applying combined shear and bending loading on steel plate girders having web openings strengthened with CFRP wrap. Five steel plate girders have been tested under the above-mentioned action; one of these plate girders which can be considered as a control specimen has no web opening whereas the other four girders have openings of circular or square cut-outs. Strengthening by attaching CFRP sheets using a type of adhesives has been applied to two of the plate girders, one with square opening and the other with circular web opening. Web opening size is chosen to have a depth equal to 40% of the web depth. In comparison with the reference girders with openings, results have shown that the ultimate load of the strengthened plate girder containing square and circular web openings increased 63.6% and 52.6%, respectively.

The effectiveness of CFRP strengthening of steel plate girders with web opening subjected to shear

MATEC Web of Conferences, 2018

The present study is experimental by nature; it involves applying shear buckling test on seven steel-plated girders that are subjected to shear loading. Four of these girders represent the strengthened girders whereas the other three are reference girders. One of the latter type of girders has a square web opening; the second has a diamond web opening while the last one has no opening at all. The webs of the strengthened girders were adhesively attached to CFRP sheets of different patterns. This step was carried out to evaluate the most effective strengthening scheme by CFRP composite. The study aims at examining the effect of several parameters on the behavior of web girders. It further examines the percentage of increase in the ultimate shear capacity of the perforated girders that have a fixed location and size where the latter is equal to 40 percent of the web depth. Results have shown that, first, the ultimate shear load of the CFRP-strengthened girders with square web opening ...

Web crippling of aluminium tubular structural members strengthened by CFRP (original) (raw)

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