AN ELASTO-VISCOPLASTIC MODEL FOR SOFT SEDIMENTARY ROCK BASED ON TIJ CONCEPT AND SUBLOADING YIELD SURFACE

DOI IR NDL Digital Collections HANDLE Web Site 1 Citations 25 References

Bibliographic Information

Other Title
  • Elasto Viscoplastic Model for Soft Sedimentary Rock Based on Tij Concept and Subloading Yield Surface

Search this article

Abstract

In this paper, an elasto-viscoplastic constitutive model with strain softening is developed for soft sedimentary rock using a newly proposed evolution equation for subloading yield surface originally invented by Hashiguchi (1980). In the model, associated flow rule is adopted and tij concept, which can take into consideration the influence of intermediate stress on deformation and strength of geomaterials, is used. In the model, as is the same as Cam-clay model, plastic volumetric strain is used as hardening parameter, which is widely accepted by the researchers who specialize in the constitutive model for geomaterials. The application of the model to the experimental results of soft sedimentary rock indicates that the model not only can describe the time dependency, such as strain rate dependency and creep, but also the strain softening behavior of geologic materials. The material parameters involved in the model have clear physical meanings and can be easily determined with triaxial compression tests and creep tests.

Journal

Citations (1)*help

See more

References(25)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top