Stability Capacity Experimental Investigation And Numerical Analysis Of H-section High Strength Aluminum Alloy Beam-columns

Compared with traditional reinforced concrete structure, aluminum structurehas a series of advantages such as: lightweight, high strength, good plasticityproperty, corrosion resistance. Aluminum applications in the field of buildingstructures has been nearly a history of100years, from the glass curtain wall to theshell structure of large span we can see aluminum structure is everywhere. In thispaper, a series of test and numerical simulation were carried out for6082-T6aluminum alloy member, modified the Chinese design of aluminum structurescorrelation formula and proposes new correlation formula for domestichigh-strength6082-T6aluminum alloyFirst through29materials members’ tensile test, accquired the measured stress-strain curves and mean parameters of Ramberg-Osgood model. A series ofeccentric compression tests were launched on25members of different Cross sectiondimensions, regularized slenderness ratio eccentricity.The test results showed that:17members were occured flexural buckling about the minor-axis and8wereoccured flexural-torsional buckling about strong axis.All members were occcuredoverall buckling, there was no local buckling phenomenon occured.Finite element software ABAQUS were using to simulate all member undereccentric compression.The finite element model of this paper were testified byexperimental results.The resulet shows that:the Finite element model of this papercan well predict the compression capacity, displacement, strain of all test members.Factors affecting the interaction curves of eccentric compression members wereanalysised,including: grid size, boundary conditions, initial imprefection,slenderness ratio, material correction coefficient, the development of cross-sectionalcoefficient of plasticity. Parameters study accquired740members data include:three commonly used cross-section,25kinds of commonly used regularizedslenderness ratio, ten different eccentricity subjected to eccentric load occurringflexural buckling.Revised Chinese <design of aluminum structures>’s correlation formula aboutcalculate the capacity of flexural buckling.And verificate the revised formula of thetest and numerical simulation result, verification results showed that: the correctedformula formula is more accurated and reasonable than the original specification.This paper reference from the Eropuean specifications and proposed newformula for the Chinese high-strength6082-T6aluminum under eccentric load.Compare this formula with the test data,parameter study results,foreign method.Thecomparing result shows that: the proposed formula is more accuracy than the formula above,its form is similar to Chinese <design of aluminum structures>.Andmore convenient for promoting in praticial engineering.