Limit load in bending of welded samples with a soft welded joint
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The limit load is one of the basic characteristics in estimating the workability of various structures, in particular, welded structures with a soft welded joint. In some cases, the difference in the yield stresses of the base material and the welded joint material is so pronounced that plastic strains are localized in a thin welded joint. The upper bound of the limit load of a welded sample subjected to bending under conditions of plane strains is obtained with allowance for certain specific features of such a distribution of strains. A comparison with the known solution is performed.
Key wordslimit load singular velocity fields welded structures plasticity
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