Constitutive Relation And Failure Criterion For Three Structural Steels At High Strain Rates
Author(s)
S Dey, O S Hopperstad, T Børvik & A H Clausen
Abstract
The effects of strain rate, temperature and stress triaxiality on strength and ductility are studied for the three structural steels Weldox 460 E, Weldox 700 E and Weldox 900 E. The material properties are obtained from three types of tensile tests: quasi-static tests with smooth and notched specimens, quasi-static tests at elevated temperatures and dynamic tests over a wide range of strain rates. The test data are used to determine material constants for constitutive relations and fracture criteria for the three steels.
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