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Comparison between neutron diffraction measurements and numerical simulation of residual stresses of a wire-drawing process

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Comparison between neutron diffraction measurements and numerical simulation of residual stresses of a wire-drawing process

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Título Comparison between neutron diffraction measurements and numerical simulation of residual stresses of a wire-drawing process
Autor Souza, Tomaz Fantin de
Soares, Carla Adriana Theis
Zottis, Juliana
Nunes, Rafael Menezes
Rocha, Alexandre da Silva
Hirsch, Thomas
Abstract In this work, a drawing processed was simulated to calculate forces and the resulting residual stresses in the material. The calculated residual stresses were compared with experimentally measured residual stresses by the Neutron Diffraction Method. The modeled process was the Wire Drawing. The necessary parameters to model the process were taken from an industrial currently used process. Rods of an AISI 1045 steel with nominal diameters of 21.46 mm were reduced to 20.25 mm by drawing with an drawing angle of 15°. Compression tests were used to determinate flow curves of the real material an used in the simulation models. The possibility to estimate drawing forces by numerical simulation was evaluated by comparing simulated results with values from empirical equations given by the literature. The results have shown a sufficient accuracy for the calculation of forces, but the comparison of residual stresses has shown differences to the experimentally determined ones that can be minimized by the consideration of high strain rates in the compression tests, anisotropy of the material and kinematic hardening.
Contido em Materials research : ibero-american journal of materials. São Carlos. vol. 16, n. 2 (2013), p. 508-514
Assunto Aço
Simulação numérica
Tensão residual
[en] Cold drawing
[en] Numerical simulation
[en] Residual stresses
Origem Nacional
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/75896
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