The aim of this study was to identify the initial yield surface of a two-layer aluminum alloy-copper composite in the range of small elastic-plastic deformations. Experimental tests in a plane stress state were conducted by loading tubular composite specimens with various combinations of axial forces and torque. The metal layers were joined together by using an epoxy resin. Independent studies were carried out for component of the composite under identical conditions. The yield surfaces obtained were compared with those given by the Huber–von Mises–Hencky and Tresca–Guest yield criteria. The yield criterion for the tested composite found by using a modified form of the rule of mixtures is presented. The yield surfaces of a Pa38/M2R composite and its components demonstrated the isotropic hardening.
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This paper was prepared as a part of the research project No. S/WM/1/2013 of Bialystok University of Technology financed by the Polish Ministry of Science and Higher Education.
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Russian translation published in Mekhanika Kompozitnykh Materialov, Vol. 52, No. 2, pp. 237-248, March-April, 2016.
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Uscinowicz, R.R. Identification of a Segment of the Yield Surface of a Two-Layer Pa38/M2R Composite. Mech Compos Mater 52, 163–170 (2016). https://doi.org/10.1007/s11029-016-9569-0
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DOI: https://doi.org/10.1007/s11029-016-9569-0