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首页> 美国政府科技报告 >Investigation into the High Strain-Rate Behavior of Compacted Sand Using the Split-Hopkinson Pressure Bar Technique
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Investigation into the High Strain-Rate Behavior of Compacted Sand Using the Split-Hopkinson Pressure Bar Technique

机译：用split-Hopkinson压杆技术研究压实砂的高应变速率行为

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The results of compressive high strain-rate experiments on compacted sand are presented. Experiments were conducted on a 60.3 mm split Hopkinson pressure bar (SHPB). The experiments showed that the assumptions necessary for a valid SHPB experiment are satisfied when using compacted sand samples constrained to a nearly uniaxial strain state. Results show that the sample stress-strain response is governed principally by the initial sample gas porosity, and that no strain-rate dependence is exhibited at sample strains less than the initial gas porosity. Several stress-strain curves are presented for samples prepared at several combinations of moisture content and density with applied stresses and strain rates up to 520 MPa and 4000 sec exp -1 , respectively. (ERA citation 10:018883)

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