Journal
ADVANCES IN MATERIALS AND PROCESSING: CHALLENGES AND OPPORTUNITIES
Volume 585, Issue -, Pages 412-+Publisher
TRANS TECH PUBLICATIONS LTD
DOI: 10.4028/www.scientific.net/AMR.585.412
Keywords
Die Steel; Dynamic compression; Strain rate sensitivity; Cowper-Symonds model; Johnson-Cook model; split Hopkinson pressure bar
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Funding
- Department of Science and Technology of India
- Swiss State Secretariat of Education and Research of Switzerland
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An experimental investigation on the strain rate sensitivity of die steel (D3) has been presented in this paper at different rates (0.001-2500 s(-1)) of uni-axial compression. Quasi-static tests (0.001 s(-1)) of the material are conducted on universal testing machine (UTM), whereas, the experiments at high strain rates are performed on split Hopkinson pressure bar (SHPB) apparatus. The effects of gauge length of the specimen on the mechanical properties of the material are studied at different strain rates. The material parameters of existing Cowper-Symonds and Johnson-Cook material models are determined and the suitability of the models is examined.
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