Accession Number : ADA130925

Title :   Evaluation of WES One-Dimensional Dynamic Soil Testing Procedures.

Descriptive Note : Final rept.,

Corporate Author : SRI INTERNATIONAL MENLO PARK CA

Personal Author(s) : Seaman,Lynn

PDF Url : ADA130925

Report Date : Jun 1983

Pagination or Media Count : 36

Abstract : The Geomechanics Division of the Waterways Experiment Station (WES) tests soils to provide material property data for ground motion calculations in support of high explosives experiments. Thus, the validity of the ground motion predictions depends greatly on the WES material properties used. The usual WES experiments are uniaxial strain (UX) and triaxial shear (TX) tests that can be performed at static testing rates and at dynamic rates with rise times down to about one millisecond. However, in the field experiments being simulated, the measured rise times are often 0.01 ms up to 0.1 ms. Recently, an effort has been made to obtain test data in UX and TX devices with rise times of about 0.1 ms. Some of the test data obtained at these very high rates have appeared to be anomalous, suggesting that wave propagation or other effects may be invalidating the data. Because of these questions about the high rate soils test data, WES asked SRI to evaluate the testing methods used at WES and the data reduction device. This report documents an evaluation of laboratory test data obtained from the explosive-loaded uniaxial strain device developed at WES and the data analysis procedures currently being used.

Descriptors :   *Soil dynamics, Soils, Loads(Forces), Strain(Mechanics), Stresses, Stress strain relations, Explosions, Soil tests, Test equipment, One dimensional, Axes

Subject Categories : Soil Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE