Kinematic hardening predictions of large stress-reversals in 3-D test on loose sand

✍ Scribed by Poul V. Lade; Suresh K. Gutta; Jerry A. Yamamuro

• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 640 KB
• Volume: 36
• Category: Article
• ISSN: 0266-352X
• DOI: 10.1016/j.compgeo.2009.05.014

✦ Synopsis

A rotational kinematic hardening constitutive model with the capability of predicting the behavior of soil during 3-D stress-reversals has been developed. An existing elasto-plastic constitutive model, the Single Hardening Model, utilizing isotropic hardening serves as the basic framework in these formulations. To this framework is added the capability of handling cross-anisotropic behavior as well as the kinematic hardening mechanism to capture inherent anisotropy of the sand in addition to the large stress-reversals. The model involves thirteen parameters, which can be determined from simple laboratory experiments, such as isotropic compression, drained triaxial compression and triaxial extension tests. The results from a series of true triaxial tests with large stress-reversals performed on loose cross-anisotropic Santa Monica Beach sand are employed for comparison with predictions.