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A unified critical state constitutive model for cyclic behavior of silty sands
Abstract The cyclic behavior of silty sands is complex in that it depends not only on packing density and confining pressure but also on fines content. How to properly model the behavior is emerging as an active area of research in geomechanics and engineering. This paper presents an attempt to formulate a critical state-based constitutive model for describing the cyclic loading behavior of sand with varying fines content. Based on several important experimental findings from recent studies, a unified characterization of the state-dependent elastic modulus and plastic hardening modulus is proposed such that only one set of elastic and hardening parameters is required for sand with varying fines content. By comparing with systematic experimental data, it is shown that the model can produce reasonably good predictions for undrained cyclic responses of silty sands under a range of void ratios, effective confining stresses and fines contents. In particular, the model successfully predicts the experimentally observed variations of sand behavior with fines content under cyclic loading.
A unified critical state constitutive model for cyclic behavior of silty sands
Abstract The cyclic behavior of silty sands is complex in that it depends not only on packing density and confining pressure but also on fines content. How to properly model the behavior is emerging as an active area of research in geomechanics and engineering. This paper presents an attempt to formulate a critical state-based constitutive model for describing the cyclic loading behavior of sand with varying fines content. Based on several important experimental findings from recent studies, a unified characterization of the state-dependent elastic modulus and plastic hardening modulus is proposed such that only one set of elastic and hardening parameters is required for sand with varying fines content. By comparing with systematic experimental data, it is shown that the model can produce reasonably good predictions for undrained cyclic responses of silty sands under a range of void ratios, effective confining stresses and fines contents. In particular, the model successfully predicts the experimentally observed variations of sand behavior with fines content under cyclic loading.
A unified critical state constitutive model for cyclic behavior of silty sands
Wei, Xiao (author) / Chen, Yuan (author) / Yang, Jun (author)
2020-07-16
Article (Journal)
Electronic Resource
English
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