...M. Rafai; M. Tafili; Y. Dong; P. J. Vardon In this study, a newly developed rate-dependent thermo-plastic constitutive model was enhanced to incorporate thermally accelerated creep and implemented into the Plaxis finite-element code, enabling the simulation of the behaviour of a well-instrumented...

..., and θ L represents the Lode angle. The friction term M f is defined as: failure granular materials numerical modelling plasticity The National Key R&D Program of China 2023YFE0120100 The National Key R&D Program of China (Grant No. 2023YFE0120100...

...Pin Zhang; Zhen-Yu Yin; Brian Sheil Elastoplastic theory is ubiquitous in engineering for modelling the mechanical behaviours of various materials such as metals and granular matter. Elastoplasticity allows computation of plastic strains and updated stresses with hardening parameters using explicit...

... the ultimate limit-state surface for a plasticity-based macroelement representation of deep foundations. The framework is used herein to investigate the horizontal efficiency of a well-documented piled foundation, and theoretical predictions are compared with results of fully coupled numerical analyses...

...G. Mortara The scope of this paper is to have an alternative to the use of an explicit plastic potential in elastoplastic models for soils. This is possible through the definition of a stress–dilatancy relationship and a simple expression for an auxiliary surface in lieu of a given expression...

...(t_{n)^k−1 + δε. ℂ* is the ‘tangent stiffness matrix’: 6 C ∗ = ∂ σ t n ∂ ε ε t n ICE Publishing: all rights reserved 2020 constitutive relations clays sands shear strength elasticity plasticity numerical}...

... is the hardening parameter, which defines the size of the yield surface; α_ij is the anisotropic variable; Λ is a plastic scalar multiplier; 〈〉 is the Macauley bracket; tr represents the trace of the matrix; e_in is the initial value of void ratio; M...

... of simulating the non-linear behaviour of granular soil–structure interface systems under three-dimensional loading conditions is proposed. The proposed constitutive model is a state-dependent elasto-plastic model, and it is formulated in the framework of two-surface plasticity and critical state soil mechanics...

... along the firm base. This paper focuses on assessing the stability of relatively flat undrained slopes using the methods of finite-element limit analysis and elastic−plastic finite-element analysis, which involve no a priori assumptions about the form or location of the critical failure mechanism...

... conditions 25 10 2018 13 01 2019 20 02 2019 ICE Publishing: all rights reserved 2019 constitutive relations numerical modelling plasticity The study of cyclic soil behaviour has attracted significant attention in the past decades. The offshore industry has...

... of the vertical plastic collapse load of a rigid shallow strip footing resting on a purely frictional material with no lateral surcharge. A comparison with results from finite-element analyses confirms the correctness of the approach. The method of characteristics, also known as the slip-line method (e.g...

...M. Mánica; A. Gens; J. Vaunat; D. F. Ruiz A cross-anisotropic formulation for elasto-plastic constitutive models based on a non-uniform scaling of the stress tensor is described. Taking advantage of the material symmetries characterising cross-anisotropy, only two scaling factors, one...

... of drilled displacement piles. This note presents an analysis of the influence of shear stress on cylindrical cavity expansion in an undrained elastic–perfectly plastic soil. The problem is formulated by assuming large strain in the plastic zone and small strain in the elastic zone around the cavity...

... in the design of plate anchors, notably in optimising the padeye location. 08 08 2013 21 08 2013 23 12 2013 ICE Publishing: all rights reserved 2014 In the force-resultant plasticity approach, the resultant forces acting on the anchor (decomposed V, H...

...N. C. Consoli; D. Foppa The adequacy of the porosity/cement ratio in predicting elastic and plastic characteristics of an artificially cemented soil under isotropic compression is examined. A number of isotropic compression tests, unconfined compression tests and characterisation tests were carried...

.... 17 12 2012 07 02 2013 09 04 2013 ICE Publishing: all rights reserved 2013 chemical properties plasticity temperature effects In classical continuum mechanics, where the continuum is allowed only for translational degrees of freedom (displacements), one may be able...

..., such that 14 5 2012 14 6 2012 21 8 2012 ICE Publishing: all rights reserved 2012 compaction constitutive relations friction numerical modelling plasticity sands The densification of granular materials is important in a wide range of situations: from repairing pot-holes...

.... For instance, DEM has interacted very little with continuum approaches based on plasticity. The present paper proposes a vision for a multiscale ‘tomography-to-simulation’ framework where artificial boundaries between characterisation and modelling campaigns across scales are diluted. As shown in Fig. 1...

... 2012 25 5 2012 12 6 2012 ICE Publishing: all rights reserved 2012 deformation plasticity sands 1 ε ˙ V = ε ˙ V ( 1 ) + ε ˙ V ( 2 ) = f 〈 Δ ε 〉 + + 〈 Δ ε 〉 − Δ t + Δ f Δ t 〈 Δ ε...

... data are essentially linear on log–log plots. Both the slopes and intercepts of these lines are simple functions of OCR. Table 1 Summary of basic properties of the tested kaolin (numbers in square brackets indicate the number of tests to determine the parameter) Plastic limit...