Residual stress distribution in cold rolled brass sheet

The variation of residual stresses through the thickness of rolled sheet is a function of the size of the roll relative to the thickness of the sheet, as well as the total reduction. This effect has been studied both experimentally and numerically for cold-rolled alpha -brass sheet. Experimental measurements consisted of determining the normal stresses in the rolling and width directions as a function of location in the sheet using a method of serial removal by electropolishing while measuring the strains generated as material containing residual stresses was removed. Numerical simulations employed ANSYS 5.0 and an elastic-plastic constitutive equation. Results indicate that the nature and distribution of residual stresses in the rolled sheet can be controlled by selecting the aspect ratio of the deforming region. Copyright (c) 1994 Elsevier Science B.V. All rights reserved.