WIT Press


Some Insights Into The Mechanism Of The Deformation And Tearing Of Thin Plates At High Strain Rates Incorporating Temperature Dependent Material Properties

Price

Free (open access)

Paper DOI

10.2495/SU000031

Volume

48

Pages

12

Published

2000

Size

2,123 kb

Author(s)

M.A. Wiehahn, G.N. Nurick & H.C. Bowles

Abstract

The response of structural components subjected to blast loads result in deformation strain rates in the range of 10^ s"^ to 10* s"\ Hitherto the effects of temperature dependent material properties for such situations have been excluded in both the experimental and numerical predictions. This phenomenon is extremely difficult to measure for the experimental tests and has only recently been included in the analysis. This paper describes a series of tests in which circular steel plates are subjected to a central localised blast load. The numerical predictions indicate that failure occurs as a result of a thermo-mechanical instability and localised shear banding. Hitherto, the failure criterion for the te

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