Abstract
Stress wave propagation is a method in dynamic explicit solvers to determine the stresses in every element of solid materials. The necking in this method at a nearly random location within the sample in the numerical model, is due to the interaction between stress wave propagation speed and material deformations speed. However, a crucial aspect of this approach is the selection of appropriate material properties to produce accurate results for the timing of the necking. To achieve this, the numerical analysis models should be provided with the improved flow curve data using different hardening behaviors for post necking. This study examines various correction techniques and their impact on the time of the necking. It concludes that an explicit solver can precisely identify the necking only if an appropriate correction method is employed. Furthermore, the correction factor also affects the mechanism of strain propagation and the mode of failure after necking.
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Dizaji, S.A. Evaluation of Post Necking Behavior of Metals Using Stress Wave Propagation Technique. Trans Indian Inst Met 76, 3087–3094 (2023). https://doi.org/10.1007/s12666-023-03044-7
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DOI: https://doi.org/10.1007/s12666-023-03044-7