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https://hdl.handle.net/11681/11228
Title: | An elastic-viscoplastic constitutive model for earth materials |
Authors: | Baladi, George Y. Rohani, Behzad |
Keywords: | Elastic-viscoplastic constitutive relationship Rate-dependent material properties Soil constitutive models Stress-strain relations Mathematical models Numerical models Continuum mechanics Soil mechanics Viscoelasticity |
Publisher: | Structures Laboratory (U.S.) Engineer Research and Development Center (U.S.) |
Series/Report no.: | Technical report (U.S. Army Engineer Waterways Experiment Station) ; SL-82-10. |
Description: | Technical Report Abstract: It has long been recognized that the stress-strain-strength properties of most geological materials under high-intensity dynamic loading conditions differ considerably from those related to relatively low-intensity static loadings. Thus realistic solutions to soil dynamic boundary-value problems require the use of constitutive models that can account for the dependency of the stress-strain-strength properties of earth materials to the various rates of loading or deformation being applied. This report describes the development of a three-dimensional elastic-viscoplastic work-hardening constitutive relationship for earth materials. The constitutive relationship is capable of reproducing the hysteretic behavior of the material under both hydrostatic and deviatoric states of stress; it also accounts for shear-induced volume change and the effect of superimposed hydrostatic stress on shearing response. The capability of the constitutive relationship for simulating the time-dependent response of earth materials is examined; an example fit for a clayey sand is given based on static laboratory triaxial shear and static and dynamic uniaxial strain test results. |
Rights: | Approved for public release; distribution is unlimited. |
URI: | http://hdl.handle.net/11681/11228 |
Appears in Collections: | Technical Report |
Files in This Item:
File | Description | Size | Format | |
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TR-SL-82-10.pdf | 4.9 MB | Adobe PDF | View/Open |