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- W2740379909 abstract "abstract The paper examines the effect of material modeling behavior on the elastic–plastic buckling of relativelythick unstiffened steel cones subjected to axial compression. Cones are assumed to be made from mildsteel with radius-to-thickness ratio, (r 2 /t) of 34.3 and cone angle of 26.561. Three material models wereconsidered: (i) elastic-perfectly plastic, (ii) engineering stress–strain and (iii) true stress true strain. Theaccuracy of numerical predictions as compared to experimental results was seen to be stronglydependent on the material modeling strategy. Plastic mechanism design approach previously proposedfor cones under axial compressionwas modified towiden the range of its applicability bycatering for theeffect of excessive plastic deformation. The proposed model utilizes the concept of true stress true strainnature of constitutive equation in determining the squash load. Predictions of collapse load given by themodified constitutive model were compared with initial plastic mechanism design approach andavailable design codes (API, ECCS, and ASME code case 2286-2) for published experimental data onaxiallycompressed unstiffened steel cones in the elastic–plastic range. Results indicate that the proposedmodel gives much better predictions of load carrying capacity than both the initial design approach andthe available design codes.& 2015 Elsevier Ltd. All rights reserved." @default.
- W2740379909 created "2017-08-08" @default.
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- W2740379909 date "2015-01-01" @default.
- W2740379909 modified "2023-09-27" @default.
- W2740379909 title "Plastic buckling of axially compressed thick unstiffened steel cones" @default.
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