Research On The Stability Of High Strength Aluminum Alloy Angle Members Under Axial Compression

With the continuous development of social economy, aluminum alloy materials arewidely used in building industry.Compared with steel, aluminum alloy has obviousadvantages, such as light weight, high strength, corrosion resistance, beautiful externalform, easy to install and construct, and which is also an important structural material.There are many researches on the commonly used alloy6061-T6in China, but on thecontract, less acknowledge about the basis of aluminum alloy design of high strengthaluminum alloy6082-T6architecture, especially the L section has not been given.Thus,according to the common building materials section L section aluminum alloy, the thesisanalyzed the high strength aluminum alloy6082-T6L section properties and the limit ofoverall stability of load which is studied by experiment and finite element numericalsimulation,It has chosen30different slenderness ratio of high strength aluminum box goldcomponent test axial compression members in this paper. There are two kinds of Sectiontype including the equilateral L type aluminum alloy and unequal L aluminum box ofgold. Tests show that the loss of angle stability in aluminum alloy members under axialcompression mode mainly has two kinds, One is about the weak axis bending instabilityand around the main shaft of the flexural-torsional buckling, another is the flexuralbuckling instability mainly slenderness members relatively large, flexural-torsionalbuckling occurs in the slenderness of relatively small.Using the finite element software ABAQUS for the30root angle type aluminumalloy under axial pressure test adopted the finite element simulation of thecorresponding numerical. After that we compared the results of numerical simulationand the experimental comparative analysis, including buckling mode, deformation,ultimate bearing capacity. In this paper, it analyzed the model of end plate, mesh size,initial bending size effect of numerical simulation results of factors. Through thecomparison of theory and experimental result, it has been found that the simulatedspecimen is calculated and also test the deformation and failure of similar deformationfinite element numerical simulation, and the ultimate bearing capacity is similar withexperiment values as calculated Co-element, the error is within the reasonable range.The numerical simulation can certificate the operation can be used in finite elementsoftware to simulate the stress of high strength aluminum alloy6082-T6L sectionaluminum alloy.In this paper, in order to get a large number of data points, the axis finite elementmodel is established for the analysis of compression member with large parameter. Andalso compared with other national norms.