Microstructural Modeling and Computational Homogenization of the Physically Linear and Nonlinear Constitutive Behavior of Micro-heterogeneous Materials
Title | Microstructural Modeling and Computational Homogenization of the Physically Linear and Nonlinear Constitutive Behavior of Micro-heterogeneous Materials PDF eBook |
Author | Felix Fritzen |
Publisher | KIT Scientific Publishing |
Pages | 190 |
Release | 2014-08-22 |
Genre | Technology & Engineering |
ISBN | 3866446993 |
Engineering materials show a pronounced heterogeneity on a smaller scale that influences the macroscopic constitutive behavior. Algorithms for the periodic discretization of microstructures are presented. These are used within the Nonuniform Transformation Field Analysis (NTFA) which is an order reduction based nonlinear homogenization method with micro-mechanical background. Theoretical and numerical aspects of the method are discussed and its computational efficiency is validated.
Microstructural Modeling and Computational Homogenization of the Physically Linear and Nonlinear Constitutive Behavior of Micro-heterogeneous Materials
Title | Microstructural Modeling and Computational Homogenization of the Physically Linear and Nonlinear Constitutive Behavior of Micro-heterogeneous Materials PDF eBook |
Author | Felix Fritzen |
Publisher | |
Pages | 0 |
Release | 2011 |
Genre | |
ISBN |
Microstructure generation and micromechanical modeling of sheet molding compound composites
Title | Microstructure generation and micromechanical modeling of sheet molding compound composites PDF eBook |
Author | Görthofer, Johannes |
Publisher | KIT Scientific Publishing |
Pages | 258 |
Release | 2022-09-13 |
Genre | Technology & Engineering |
ISBN | 373151205X |
Wir präsentieren einen Algorithmus zur schnellen Erzeugung von SMC Mikrostrukturen hoher Güte, durch Verwendung einer exakten Schließung und eines quasi-zufälligen Samplings. Darüber hinaus stellen wir ein modulares Framework zur Modellierung anisotroper Schädigung vor. Unser Konzept der Extraktionstensoren und Schädigungsfunktionen ermöglicht die Beschreibung komplexer Vorgänge. Darüber hinaus schlagen wir einen ganzheitlichen Multiskalenansatz zur Bestimmung anisotroper Versagenskriterien vor. - We introduce an algorithm that allows for a fast generation of SMC composite microstructures. An exact closure approximation and a quasi-random orientation sampling ensure high fidelity. Furthermore, we present a modular framework for anisotropic damage evolution. Our concept of extraction tensors and damage-hardening functions enables the description of complex damage-degradation. In addition, we propose a holistic multiscale approach for constructing anisotropic failure criteria.
Finite element simulation of dislocation based plasticity and diffusion in multiphase materials at high temperature
Title | Finite element simulation of dislocation based plasticity and diffusion in multiphase materials at high temperature PDF eBook |
Author | Albiez, Jürgen |
Publisher | KIT Scientific Publishing |
Pages | 222 |
Release | 2019-05-22 |
Genre | Technology & Engineering |
ISBN | 3731509180 |
A single-crystal plasticity model as well as a gradient crystal plasticity model are used to describe the creep behavior of directionally solidi?ed NiAl based eutectic alloys. To consider the transition from theoretical to bulk strength, a hardening model was introduced to describe the strength of the reinforcing phases. Moreover, to account for microstructural changes due to material ?ux, a coupled diffusional-mechanical simulation model was introduced.
Efficient fast Fourier transform-based solvers for computing the thermomechanical behavior of applied materials
Title | Efficient fast Fourier transform-based solvers for computing the thermomechanical behavior of applied materials PDF eBook |
Author | Wicht, Daniel |
Publisher | KIT Scientific Publishing |
Pages | 336 |
Release | 2022-10-11 |
Genre | Science |
ISBN | 3731512203 |
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.
A dynamic and statistical analysis of the temperature- and fatigue behavior of a race power unit – The effect of different thermodynamic states
Title | A dynamic and statistical analysis of the temperature- and fatigue behavior of a race power unit – The effect of different thermodynamic states PDF eBook |
Author | Hölz, Peter |
Publisher | KIT Scientific Publishing |
Pages | 294 |
Release | 2020-07-08 |
Genre | Technology & Engineering |
ISBN | 3731509881 |
Biaxial Characterization and Mean-field Based Damage Modeling of Sheet Molding Compound Composites
Title | Biaxial Characterization and Mean-field Based Damage Modeling of Sheet Molding Compound Composites PDF eBook |
Author | Schemmann, Malte |
Publisher | KIT Scientific Publishing |
Pages | 194 |
Release | 2018-11-09 |
Genre | |
ISBN | 3731508184 |