@Article{cmes.2022.020260,
AUTHOR = {Chengya Hua, Leihua Yao, Chenguang Song, Qihang Ni, Dongfang Chen},
TITLE = {A New Criterion for Defining Inhomogeneous Slope Failure Using the Strength Reduction Method},
JOURNAL = {Computer Modeling in Engineering \& Sciences},
VOLUME = {132},
YEAR = {2022},
NUMBER = {2},
PAGES = {413--434},
URL = {http://www.techscience.com/CMES/v132n2/48311},
ISSN = {1526-1506},
ABSTRACT = {A new variational method treating the system as a whole with rigorous mathematical and physical derivation
was presented in this paper. Combined with classical and engineering examples, variational energy expressions
of slopes were derived. In addition, the calculation programs were written in the FISH language set in FLAC3D
(fast Lagrangian analysis of continua in three dimensions) software. Factors of safety (FOSs) of the models were
determined by the variational method based on the strength reduction method (SRM) and then compared with
other criteria or methods. The result showed that the variational method reflected the process of slope plasticity and
failure uniformly and was feasible to analyze the stability of inhomogeneous slopes. The method was applicable to
both two-dimensional and three-dimensional heterogeneous slopes. The small error with other criteria or methods
also showed the accuracy of this method. This method unified other criteria, avoided the artificial error of other
criteria, and provided a logical derivation for the instability of heterogeneous slope. This method considered the
system as a whole and avoided the shortcomings of the general method of one-sided instability analysis. The
proposed method is of great significance as it considers the coupling effect of stress and strain of materials and
gives the mechanical basis for the instability of complex slopes.},
DOI = {10.32604/cmes.2022.020260}
}