Proceedings of the Institution of Mechanical Engineers · 1955 · 76 citations · 4 references
Natural SciencesMaterials EngineeringMaterials ScienceMaterials CharacterizationMechanical Behavior Of MaterialsMetallic MaterialsMechanical CharacterizationStrain AnalysisStrain MeasurementStress-strain BehaviorYield Stress BehaviorYield Stress MaterialsCold RollingCompressive StrainRollingStress-strain CurveTrue Yield StressYield StrainYield StressYield Stress Determination
Yield stress in plane strain can be derived by compression between smooth parallel dies, as shown in a prior study. This study investigates applying that method to obtain yield stress‑strain curves for strip material. The authors present a practical test that accurately determines the yield stress‑compressive strain curve for strip materials in cold rolling and establish optimal test conditions. The study shows that the derived curves correlate with simple tension and compression results, while also revealing anomalous behavior in rolling relatively thick material.
In a previous paper (Watts and Ford 1952)‡, it was shown that the true yield stress in plane strain could be derived by compression between smooth parallel dies. In this paper the use of the method to determine yield stress-strain curves of strip material is investigated. The various factors involved are studied, and it is shown that the results can be correlated with those of simple tension and compression. The test forms a practical means for accurately determining the yield stress-compressive strain curve for strip materials in the cold rolling process, and the optimum test conditions are established. The anomalous results found in rolling relatively thick material are demonstrated.
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