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Title: Calculation of stress and strain from triaxial test data on undrained soil specimens
Authors: United States. Defense Atomic Support Agency.
Ehrgott, John Q., Jr. (John Qua), 1970-
Keywords: Ground shock
Shear tests
Soil stress-strain relations
Stress-strain measurement
Triaxial tests
Soil mechanics
Publisher: U.S. Army Engineer Waterways Experiment Station.
Engineer Research and Development Center (U.S.)
Series/Report no.: Miscellaneous Paper (U.S. Army Engineer Waterways Experiment Station) ; S-71-9
Description: Miscellaneous Paper
Abstract: The formulation of constitutive relations for use in computerized analyses of free-field ground shock phenomena is based primarily on laboratory-determined material properties. These properties, as described by stress-strain relations, are not directly determined in the laboratory, but are derived through interpretation of load and deformation data measured by the experimenter. Throughout this paper, one laboratory test, the triaxial shear test, is used to illustrate the extent of interpretation required on raw data and the influence of this interpretation on recommended constitutive properties. Various techniques that have been developed to obtain stress-strain data from the triaxial test are reviewed along with current advances in measurement systems. Typical raw data are presented and calculations of axial, lateral, ard volumetric strains are made based on a variety of empirical and theoretical approaches. The results demonstrate that research and development efforts are still required in the area of material property testing in order to establish adequate confidence in the formulation of constitutive relations for ground shock calculations.
Gov't Doc #: Miscellaneous Paper S-71-9
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Miscellaneous Paper

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