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- W2309226905 abstract "Finite element methods have been used in the past for yield pillar analysis. One difficulty in this area is the simulation of stress decrease after pillar yielding. In the past, usually a strategy of reducing the Young’s modulus was employed because there is no satisfactory material model that is able to describe the post-failure strain-softening properties of the rock material. Most conventional plastic models are conceived for either strain-hardening or perfectly-plastic. In this paper, a constitutive model with strain-softening named Concrete model is used to study the behavior of yield pillars. The basic material characteristics of the concrete model are: (1) tensile failure at a relative small maximum principal tensile stress; (2) compression crushing failure at high compression; and (3) strain softening from crushing failure to an ultimate strain at which the material fails completely. The model is very suitable for application to geo-material such as rock and soil. The concept of applying yield pillar is demonstrated by obtaining pressure arch over the yield pillars. Comparisons were made among the stress distributions obtained by concrete and other plastic models." @default.
- W2309226905 created "2016-06-24" @default.
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- W2309226905 date "1994-01-01" @default.
- W2309226905 modified "2023-09-27" @default.
- W2309226905 title "Finite Element Analysis of Yield Pillars in Thick Seam Mine Using concrete model" @default.
- W2309226905 hasPublicationYear "1994" @default.
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