The numerical implementation of advanced plastic damage models has been challenging
due to the diverse computational difficulties caused by material nonlinearity. In this study …

Desiccation crack is a significant factor contributing to numerous engineering and
environmental disasters. Under complex climate conditions, soils undergo not only seasonal …

A robust and concise implicit stress integration algorithm of elastoplastic models is
presented. It does not require the loading/unloading estimation and analytical derivation …

Hydraulic fracturing in combination with horizontal well has been widely used to stimulate
shale oil and gas from reservoirs. Numerical simulation of hydraulic fracturing is a great …

The small-strain stiffness of frozen soils is important for the constructions of geotechnical
structures in cold regions and artificial ground freezing engineering. The variation in the …

This study formulated the Cam-clay model, an elastoplastic constitutive model for fully
remolded and normally consolidated clay, using the multiplicative decomposition of the …

Numerical challenges, incorporating non-uniqueness, non-convexity, undefined gradients,
and high curvature, of the positive level sets of yield function are encountered in stress …

The accuracy of a constitutive model for confined concrete largely relies on its capability to
capture concrete's dilatancy behavior. In this paper, a non-orthogonal flow rule (NFR) is …

The nonlocal integral method typically requires a very high computing cost to search
neighborhood integration points for calculating the nonlocal variable, which limits its …

A simple single bounding surface constitutive model is developed to predict the undrained
behaviors of saturated clays under cyclic loads. The new model does not involve complex …