Abstract
Using the finite element analysis, a series stiffened panels under combined normal loads and biaxial compressions are conducted to investigate the effect of several influential factors on the ultimate limit states. Two spans/bays FE model with periodical boundary condition is adopted to consider the interaction between adjacent structural members. The initial deflections assumed as Fourier components including symmetric and asymmetric modes are used to identify the half-wave number of collapse of the local plate, which is compared with half-wave number of buckling calculated by formula. Based on the numerical results, the influences of half-wave number assumed in the equivalent initial imperfection and loads combination on the collapse behaviours of stiffened panels are discussed. It is found that lateral pressure might increase the ultimate strength of stiffened panels for the stiffener-induced failure modes. The one half-wave region of local plate influences significantly the load carrying capacity of stiffened panels.
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Xu, M.C., Song, Z.J., Pan, J. et al. Study on the influence of the initial deflection and load combination on the collapse behaviour of continuous stiffened panels. Int J Steel Struct 17, 1427–1442 (2017). https://doi.org/10.1007/s13296-017-1213-x
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DOI: https://doi.org/10.1007/s13296-017-1213-x