Abstract
A new macroscopic plasticity model for non-cohesive granular materials, with the focus on coarse-sized materials (railway ballast), is presented. The corresponding incremental relations are reformulated in the space of stress invariants that is extended with the internal (hardening) variables and the corresponding dissipative stresses. The model is calibrated using data from Conventional Triaxial Compression (CTC) tests. A function evaluation method is used for the optimization. A “multi-vector” strategy for choosing the appropriate start vector is proposed.
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References
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© 2001 Kluwer Academic Publishers
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Jacobsson, L., Runesson, K. (2001). Integration and Calibration of a Plasticity Model for Granular Materials. In: Ehlers, W. (eds) IUTAM Symposium on Theoretical and Numerical Methods in Continuum Mechanics of Porous Materials. Solid Mechanics and Its Applications, vol 87. Springer, Dordrecht. https://doi.org/10.1007/0-306-46953-7_30
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DOI: https://doi.org/10.1007/0-306-46953-7_30
Publisher Name: Springer, Dordrecht
Print ISBN: 978-0-7923-6766-6
Online ISBN: 978-0-306-46953-4
eBook Packages: Springer Book Archive