Abstract
A rigorous approach founded in the fundamental principles of plasticity is used to develop an accurate numerical algorithm for the determination of stresses and elastic and plastic strains from total strain data measured on a structure surface. The approach used to develop the algorithm and its relationship to both the flow theory of plasticity and recent advances in tangent stiffness-based numerical solution procedures for elastic-plastic boundary value problems are presented. Verification of the method for plane stress problems is demonstrated. A discussion of how the method can be used with measured surface displacement data is proved.
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Sutton, M.A., Deng, X., Liu, J. et al. Determination of elastic-plastic stresses and strains from measured surface strain data. Experimental Mechanics 36, 99–112 (1996). https://doi.org/10.1007/BF02328705
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DOI: https://doi.org/10.1007/BF02328705