Mesoscale Simulation Of The Mold Filling Process Of Sheet Molding Compound
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| Author | : Meyer, Nils |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 292 |
| Release | : 2022-07-12 |
| Genre | : Technology & Engineering |
| ISBN | : 3731511738 |
Sheet Molding Compounds (SMC) are discontinuous fiber reinforced composites that are widely applied due to their ability to realize composite parts with long fibers at low cost. A novel Direct Bundle Simulation (DBS) method is proposed in this work to enable a direct simulation at component scale utilizing the observation that fiber bundles often remain in a bundled configuration during SMC compression molding.
| Author | : Poppe, Christian Timo |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 332 |
| Release | : 2022-07-18 |
| Genre | : Technology & Engineering |
| ISBN | : 3731511908 |
Interdisciplinary development approaches for system-efficient lightweight design unite a comprehensive understanding of materials, processes and methods. This applies particularly to continuous fibre-reinforced plastics (CoFRPs), which offer high weight-specific material properties and enable load path-optimised designs. This thesis is dedicated to understanding and modelling Wet Compression Moulding (WCM) to facilitate large-volume production of CoFRP structural components.
| Author | : Gajek, Sebastian |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 326 |
| Release | : 2023-08-25 |
| Genre | : |
| ISBN | : 3731512785 |
We investigate deep material networks (DMN). We lay the mathematical foundation of DMNs and present a novel DMN formulation, which is characterized by a reduced number of degrees of freedom. We present a efficient solution technique for nonlinear DMNs to accelerate complex two-scale simulations with minimal computational effort. A new interpolation technique is presented enabling the consideration of fluctuating microstructure characteristics in macroscopic simulations.
| Author | : Wittemann, Florian |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 180 |
| Release | : 2022-11-18 |
| Genre | : Technology & Engineering |
| ISBN | : 3731512173 |
This work presents novel simulation techniques for injection molding of fiber reinforced polymers. These include approaches for anisotropic flow modeling, hydrodynamic forces from fluid on fibers, contact forces between fibers, a novel fiber breakage modeling approach and anisotropic warpage analysis. Due to the coupling of fiber breakage and anisotropic flow modeling, the fiber breakage directly influences the modeled cavity pressure, which is validated with experimental data.
| Author | : Thorgeirsson, Adam Thor |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 190 |
| Release | : 2024-09-03 |
| Genre | : |
| ISBN | : 3731513714 |
In this work, an extension of the federated averaging algorithm, FedAvg-Gaussian, is applied to train probabilistic neural networks. The performance advantage of probabilistic prediction models is demonstrated and it is shown that federated learning can improve driving range prediction. Using probabilistic predictions, routing and charge planning based on destination attainability can be applied. Furthermore, it is shown that probabilistic predictions lead to reduced travel time.
| Author | : Jauch, Jens |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 264 |
| Release | : 2024-03-01 |
| Genre | : |
| ISBN | : 3731513323 |
This work describes a method for weighted least squares approximation of an unbounded number of data points using a B-spline function. The method can shift the bounded B-spline function definition range during run-time. The approximation method is used for optimizing velocity trajectories for an electric vehicle with respect to travel time, comfort and energy consumption. The trajectory optimization method is extended to a driver assistance system for automated vehicle longitudinal control.
| Author | : Pinay, Julien |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 196 |
| Release | : 2024-01-16 |
| Genre | : |
| ISBN | : 3731513285 |
Ihrer Arbeit in der Originalsprache: This work aims at identifying relevant road surface characteristics to mitigate tire-road noise of free-rolling tires using a systematic approach. As using open porous roads is already known as an efficient measure to reduce tire rolling noise, this study will focus on compact road surfaces which have a low acoustic absorption. Measurements on standardized ISO 10844 test tracks and on public roads are used to study the norm's representativity and its completeness.
| Author | : Elgharbawy, Mohamed |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 268 |
| Release | : 2023-01-13 |
| Genre | : Technology & Engineering |
| ISBN | : 3731512548 |
With the further development of automated driving, the functional performance increases resulting in the need for new and comprehensive testing concepts. This doctoral work aims to enable the transition from quantitative mileage to qualitative test coverage by aggregating the results of both knowledge-based and data-driven test platforms. The validity of the test domain can be extended cost-effectively throughout the software development process to achieve meaningful test termination criteria.
| Author | : Vijay Kumar Thakur |
| Publisher | : John Wiley & Sons |
| Total Pages | : 523 |
| Release | : 2014-10-30 |
| Genre | : Technology & Engineering |
| ISBN | : 1118773985 |
The book presents emerging economic and environmentally friendly lignocellulosic polymer composites materials that are free from side effects studied in the traditional synthetic materials. This book brings together panels of highly-accomplished leading experts in the field of lignocellulosic polymers & composites from academia, government, as well as research institutions across the globe and encompasses basic studies including preparation, characterization, properties and theory of polymers along with applications addressing new emerging topics of novel issues. Provide basic information and clear understanding of the present state and the growing utility of lignocellulosic materials from different natural resources Includes contributions from world-renowned experts on lignocellulosic polymer composites and discusses the combination of different kinds of lignocellulosic materials from natural resources Discusses the fundamental properties and applications of lignocellulosic polymers in comparison to traditional synthetic materials Explores various processing/ mechanical/ physic-chemical aspects of lignocellulosic polymer composites
| Author | : Young Kwon |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 634 |
| Release | : 2007-12-04 |
| Genre | : Technology & Engineering |
| ISBN | : 0387363181 |
This book presents the state-of-the-art in multiscale modeling and simulation techniques for composite materials and structures. It focuses on the structural and functional properties of engineering composites and the sustainable high performance of components and structures. The multiscale techniques can be also applied to nanocomposites which are important application areas in nanotechnology. There are few books available on this topic.
