Dynamic Behavior of Advanced Ti Alloy under Impact Loading: Experimental and Numerical Analysis

Abstract:

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Industrial applications of Ti-based alloys, especially in aerospace, marine and offshore industries, have grown significantly over the years primarily due to their high strength, light weight as well as good fatigue and corrosion-resistance properties. A combination of experimental and numerical studies is necessary to predict a material behavior of such alloys under high strain-rate conditions characterized also by a high level of strains accompanied by high temperatures. A Split Hopkinson Pressure Bar (SHPB) technique is a commonly used experimental method to characterize a dynamic stress-strain response of materials at high strain rates. In a SHPB test, the striker bar is shot against the free end of the incident stress bar, which on impact generates a stress pulse propagating in the incident bar towards the specimen sandwiched between the incident and transmitted bars. An experimental study and a numerical analysis based on a three-dimensional finite element model of the SHPB experiment are performed in this study to assess various features of the underlying mechanics of deformation processes of the alloy tested at high-strain and -strain-rate regimes.

Info:

Periodical:

Edited by:

R. L. Burguete, M. Lucas, E. A. Patterson, S. Quinn

Pages:

207-212

DOI:

10.4028/www.scientific.net/AMM.70.207

Citation:

M. Demiral et al., "Dynamic Behavior of Advanced Ti Alloy under Impact Loading: Experimental and Numerical Analysis", Applied Mechanics and Materials, Vol. 70, pp. 207-212, 2011

Online since:

August 2011

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$35.00

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