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A Gradient Crystal Plasticity Theory Based on an Extended Energy Balance

2020-09-15 Technology & Engineering
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Release : 2020-09-15
Genre : Technology & Engineering
Kind : eBook
Book Rating : 251/5 ( reviews)

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Book Synopsis A Gradient Crystal Plasticity Theory Based on an Extended Energy Balance by : Prahs, Andreas

Download or read book A Gradient Crystal Plasticity Theory Based on an Extended Energy Balance written by Prahs, Andreas. This book was released on 2020-09-15. Available in PDF, EPUB and Kindle. Book excerpt: An overview of different methods for the derivation of extended continuum models is given. A gradient plasticity theory is established in the context of small deformations and single slip by considering the invariance of an extended energy balance with respect to Euclidean transformations, where the plastic slip is considered as an additional degree of freedom. Thermodynamically consistent flow rules at the grain boundary are derived. The theory is applied to a two- and a three-phase laminate.

Modeling of Dislocation - Grain Boundary Interactions in Gradient Crystal Plasticity Theories

2022-07-12 Technology & Engineering
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Release : 2022-07-12
Genre : Technology & Engineering
Kind : eBook
Book Rating : 967/5 ( reviews)

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Book Synopsis Modeling of Dislocation - Grain Boundary Interactions in Gradient Crystal Plasticity Theories by : Erdle, Hannes

Download or read book Modeling of Dislocation - Grain Boundary Interactions in Gradient Crystal Plasticity Theories written by Erdle, Hannes. This book was released on 2022-07-12. Available in PDF, EPUB and Kindle. Book excerpt: A physically-based dislocation theory of plasticity is derived within an extended continuum mechanical context. Thermodynamically consistent flow rules at the grain boundaries are derived. With an analytical solution of a three-phase periodic laminate, dislocation pile-up at grain boundaries and dislocation transmission through the grain boundaries are investigated. For the finite element implementations, numerically efficient approaches are introduced based on accumulated field variables.

Microstructure modeling and crystal plasticity parameter identification for predicting the cyclic mechanical behavior of polycrystalline metals

2023-04-04 Technology & Engineering
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Release : 2023-04-04
Genre : Technology & Engineering
Kind : eBook
Book Rating : 726/5 ( reviews)

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Book Synopsis Microstructure modeling and crystal plasticity parameter identification for predicting the cyclic mechanical behavior of polycrystalline metals by : Kuhn, Jannick

Download or read book Microstructure modeling and crystal plasticity parameter identification for predicting the cyclic mechanical behavior of polycrystalline metals written by Kuhn, Jannick. This book was released on 2023-04-04. Available in PDF, EPUB and Kindle. Book excerpt: Computational homogenization permits to capture the influence of the microstructure on the cyclic mechanical behavior of polycrystalline metals. In this work we investigate methods to compute Laguerre tessellations as computational cells of polycrystalline microstructures, propose a new method to assign crystallographic orientations to the Laguerre cells and use Bayesian optimization to find suitable parameters for the underlying micromechanical model from macroscopic experiments.

Efficient fast Fourier transform-based solvers for computing the thermomechanical behavior of applied materials

2022-10-11 Science
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Release : 2022-10-11
Genre : Science
Kind : eBook
Book Rating : 203/5 ( reviews)

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Book Synopsis Efficient fast Fourier transform-based solvers for computing the thermomechanical behavior of applied materials by : Wicht, Daniel

Download or read book Efficient fast Fourier transform-based solvers for computing the thermomechanical behavior of applied materials written by Wicht, Daniel. This book was released on 2022-10-11. Available in PDF, EPUB and Kindle. Book excerpt: The mechanical behavior of many applied materials arises from their microstructure. Thus, to aid the design, development and industrialization of new materials, robust computational homogenization methods are indispensable. The present thesis is devoted to investigating and developing FFT-based micromechanics solvers for efficiently computing the (thermo)mechanical response of nonlinear composite materials with complex microstructures.

Thermomechanical Modeling and Experimental Characterization of Sheet Molding Compound Composites

2023-06-28
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Release : 2023-06-28
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Kind : eBook
Book Rating : 327/5 ( reviews)

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Book Synopsis Thermomechanical Modeling and Experimental Characterization of Sheet Molding Compound Composites by : Lang, Juliane

Download or read book Thermomechanical Modeling and Experimental Characterization of Sheet Molding Compound Composites written by Lang, Juliane. This book was released on 2023-06-28. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this work is to model and experimentally characterize the anisotropic material behavior of SMC composites on the macroscale with consideration of the microstructure. Temperature-dependent thermoelastic behavior and failure behavior are modeled and the corresponding material properties are determined experimentally. Additionally, experimental biaxial damage investigations are performed. A parameter identification merges modeling and experiments and validates the models.

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