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- W2673428723 abstract "Summary This paper introduces sequential limit analysis (SLA) as a method for modelling large plastic deformations of purely cohesive materials such as undrained clay. The method involves solving a series of consecutive small‐deformation plastic collapse problems using finite element limit analysis, thus ensuring high levels of accuracy, efficiency, and robustness. The techniques needed to develop an SLA implementation for two‐dimensional (plane strain) problems are described in detail, including model geometry updating routines, treatment of rigid bodies, interfaces and boundaries, and periodic remeshing and interpolation of field variables. A simple total stress‐based constitutive model is used to account for strain softening and strain rate effects. Extensive verifications and validations are performed using analytical solutions and physical model test results, comparing both collapse loads and failure mechanisms, to demonstrate the effectiveness of the SLA approach. Additional solution quality checks on the bracketing discrepancy between lower‐bound and upper‐bound limit analysis solutions, and on the incompressibility of the rigid‐plastic material, are also presented." @default.
- W2673428723 created "2017-06-30" @default.
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- W2673428723 date "2017-06-23" @default.
- W2673428723 modified "2023-10-07" @default.
- W2673428723 title "Modelling large plastic deformations of cohesive soils using sequential limit analysis" @default.
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- W2673428723 doi "https://doi.org/10.1002/nag.2700" @default.
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