Abstract
In this study, the high strength steel DP980 material shear properties were investigated. In the design process, first of all based on literature paper and test specimen optimal size requirements, and then find ways to meet the current test equipment maximum capacity (100 kN). The Studies completed DP980 1.4 mm specimens of tensile test, one-way shear test and forward and reverse shear loading experiments. Limited by the maximum output of the machine capacity 100 kN, the thickness 1.4 mm steel plate with strain gage measurements under unidirectional force generated by experiments at the maximum shear strain of 9.890%. And the forward and reverse biased loading method, the completion of seven Bauschinger shear stress-shear strain curves. In the unidirectional shear test results, first verify that the elastic region of the shear elastic modulus of 74.7 GPa, in line with the basic properties of steel materials. Then the shear stress-shear strain curve is converted to stress-strain curve relationship. Wherein the shear stress-shear plastic portion of the curve was converted by factor 1.81, there is overlap between the tensile and shear experimental results confirm rationality.
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