Analysis of shear cutting of dual phase steel by application of an advanced damage model

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Abstract

Shear cutting is still the most preferred process in industry for separation of sheets. An enhanced fully-coupled Lemaitre model is applied for the description of the material behaviour. The local damage model considers the influence of shear and compression-dominated stress states on the propagation of damage. A time-efficient approach for parameter identification is used to obtain proper material parameters from different tensile and torsion tests. Shear cutting experiments for dual phase steel are performed to validate the simulation model. An accurate prediction of the cutting force is obtained with the process model. Furthermore, it is shown that the triaxiality at fracture has to be considered in combination with the predicted geometry to determine the characteristics of the cutting surface, i.e. the burnish and the fracture zone.

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Gutknecht, F., Steinbach, F., Hammer, T., Clausmeyer, T., Volk, W., & Tekkaya, A. E. (2016). Analysis of shear cutting of dual phase steel by application of an advanced damage model. In Procedia Structural Integrity (Vol. 2, pp. 1700–1707). Elsevier B.V. https://doi.org/10.1016/j.prostr.2016.06.215

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