Intragranular deformation patterning through non convex rate dependent strain gradient crystal plasticity

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2012-12-03

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Yalçınkaya, Tuncay

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A rate dependent strain gradient crystal plasticity framework is presented where the displacement and the plastic slip fields are considered as primary variables. These coupled fields are determined on a global level by solving simultaneously the linear momentum balance and the slip evolution equation, which is derived in a thermodynamically consistent manner. The formulation is based on the 1D theory presented in Yalcinkaya et al. (2011), where the patterning of plastic slip is obtained in a system with non-convex energetic hardening through a phenomenological double-well plastic potential. In the current multi-dimensional multi-slip analysis the non-convexity enters the framework through a latent hardening potential presented in Ortiz and Repettto (1999) where the microstructure evolution is obtained explicitly via a lamination procedure. The current study aims the implicit evolution of deformation patterns due to the incorporated physically based non-convex potential.

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https://hdl.handle.net/11511/33060

DOI

https://doi.org/10.1002/pamm.201210389

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Department of Aerospace Engineering, Conference / Seminar

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Citation Formats

T. Yalçınkaya, “Intragranular deformation patterning through non convex rate dependent strain gradient crystal plasticity,” 2012, vol. 12, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/33060.