点击次数：

论文类型：期刊论文

发表时间：2015-07-01

发表刊物：ACTA OCEANOLOGICA SINICA

收录刊物：CSCD、SCIE、PKU、ISTIC、Scopus

卷号：34

期号：7

页面范围：105-115

ISSN号：0253-505X

关键字：principal stress axes rotation; constitutive model; hollow torsional shear experiment

摘要：Principal stress axes rotation influences the stress-strain behavior of sand under wave loading. A constitutive model for sand, which considers principal stress orientation and is based on generalized plasticity theory, is proposed. The new model, which employs stress invariants and a discrete memory factor during reloading, is original because it quantifies model parameters using experimental data. Four sets of hollow torsion experiments were conducted to calibrate the parameters and predict the capability of the proposed model, which describes the effects of principal stress orientation on the behavior of sand. The results prove the effectiveness of the proposed calibration method.