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Control Number311107
Date and Time of Latest Transaction20150706093533.AM
General Information150706s |||||||||b ||00|||
Cataloging SourceSTII-DOST
Local Call NumberScienceDirect
Main Entry - Personal NameLundberg, Bengt
 Gary, Gerard
 Mohr, Dirk
Title StatementEvaluation of stress–strain curve estimates in dynamic experiments by Dirk Mohr, Gerard Gary and Bengt Lundberg
Physical Descriptionpages 161-169 computer file; text; 581kb
Summary, Etc.Accurate measurements of the forces and velocities at the boundaries of a dynamically loaded specimen may be obtained using split Hopkinson pressure bars (SHPB) or other experimental devices. However, the determination of a representative stress–strain curve based on these measurements can be challenging. Due to transient effects, the stress and strain fields are not uniform within the specimen. Several formulas have been proposed in the past to estimate the stress–strain curve from dynamic experiments. Here, we make use of the theoretical solution for the waves in an elastic specimen to evaluate the accuracy of these estimates. It is found that it is important to avoid an artificial time shift in the processing of the experimental data. Moreover, it is concluded that the combination of the output force based stress estimate and the average strain provides the best of the commonly used stress–strain curve estimates in standard SHPB experiments.04 Engi
Subject Added Entry - Topical Termering04Anal
 is (Topical scope)04 Eng
 eering and manufacturing industries DOST
LocationSTII ScienceDirect NONPRINTS NP 14-15421 1 14-15421 Online/Download 2012-01-12 NONP
  
     
 
Physical Location
Department of Science and Technology
Science and Technology Information InstituteScienceDirect
  
     
 
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