Simulation of damage mechanisms in weave reinforced materials based on multiscale modeling
Simulation of damage mechanisms in weave reinforced materials based on multiscale modeling

Author: Naake, Dominik Robert

Publisher: KIT Scientific Publishing

Published: 2020-09-18

Total Pages: 304

ISBN-13: 3731510057

DOWNLOAD EBOOK

A weave reinforced composite material with a thermoplastic matrix is investigated by using a multiscale chain to predict the macroscopic material behavior. A large-strain framework for constitutive modeling with focus on material non-linearities, i.e. plasticity and damage is defined. The ability of the geometric and constitutive models to predict the deformation and failure behavior is demonstrated by means of selected examples.

Fiber-dependent injection molding simulation of discontinuous reinforced polymers
Fiber-dependent injection molding simulation of discontinuous reinforced polymers

Author: Wittemann, Florian

Publisher: KIT Scientific Publishing

Published: 2022-11-18

Total Pages: 180

ISBN-13: 3731512173

DOWNLOAD EBOOK

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.

Process simulation of wet compression moulding for continuous fibre-reinforced polymers
Process simulation of wet compression moulding for continuous fibre-reinforced polymers

Author: Poppe, Christian Timo

Publisher: KIT Scientific Publishing

Published: 2022-07-18

Total Pages: 332

ISBN-13: 3731511908

DOWNLOAD EBOOK

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.

Stochastic Range Estimation Algorithms for Electric Vehicles using Data-Driven Learning Models
Stochastic Range Estimation Algorithms for Electric Vehicles using Data-Driven Learning Models

Author: Scheubner, Stefan

Publisher: KIT Scientific Publishing

Published: 2022-06-03

Total Pages: 190

ISBN-13: 3731511665

DOWNLOAD EBOOK

This work aims at improving the energy consumption forecast of electric vehicles by enhancing the prediction with a notion of uncertainty. The algorithm itself learns from driver and traffic data in a training set to generate accurate, driver-individual energy consumption forecasts.

Mesoscale simulation of the mold filling process of Sheet Molding Compound
Mesoscale simulation of the mold filling process of Sheet Molding Compound

Author: Meyer, Nils

Publisher: KIT Scientific Publishing

Published: 2022-07-12

Total Pages: 292

ISBN-13: 3731511738

DOWNLOAD EBOOK

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.

Trajectory optimization based on recursive B-spline approximation for automated longitudinal control of a battery electric vehicle
Trajectory optimization based on recursive B-spline approximation for automated longitudinal control of a battery electric vehicle

Author: Jauch, Jens

Publisher: KIT Scientific Publishing

Published: 2024-03-01

Total Pages: 264

ISBN-13: 3731513323

DOWNLOAD EBOOK

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.

Road Condition Estimation with Data Mining Methods using Vehicle Based Sensors
Road Condition Estimation with Data Mining Methods using Vehicle Based Sensors

Author: Masino, Johannes

Publisher: KIT Scientific Publishing

Published: 2021-03-31

Total Pages: 234

ISBN-13: 3731510049

DOWNLOAD EBOOK

The work provides novel methods to process inertial sensor and acoustic sensor data for road condition estimation and monitoring with application in vehicles, which serve as sensor platforms. Furthermore, methods are introduced to combine the results from various vehicles for a more reliable estimation.

Experimental investigation and process simulation of the compression molding process of Sheet Molding Compound (SMC) with local reinforcements
Experimental investigation and process simulation of the compression molding process of Sheet Molding Compound (SMC) with local reinforcements

Author: Hohberg, Martin

Publisher: KIT Scientific Publishing

Published: 2022-04-05

Total Pages: 216

ISBN-13: 3731510073

DOWNLOAD EBOOK

In this book, a new three-dimensional approach for the process simulation of SMC is developed. This approach takes into account both, the core layer that is dominated by the extensional viscosity and the thin lubrication layer. In order to transfer the information from the process to the structure simulation, a CAE chain is further developed. In addition, a new rheological tool is developed to analyze flow behavior experimentally and to provide the required material parameters.

Manufacturing-constrained multi-objective optimization of local patch reinforcements for discontinuous fiber reinforced composite parts
Manufacturing-constrained multi-objective optimization of local patch reinforcements for discontinuous fiber reinforced composite parts

Author: Fengler, Benedikt

Publisher: KIT Scientific Publishing

Published: 2021-03-31

Total Pages: 200

ISBN-13: 3731510065

DOWNLOAD EBOOK

In this work, contributes to the optimization of local continuous fiber reinforcement patches, under consideration of manufacturing constraints. This approach requires specific optimization strategies. Therefore, an multi-objective optimization strategy for the placement of local reinforcement patches, under consideration of manufacturing constraints, has been developed. During the multi objective optimization, structural and process related objectives are considered.

Experimental investigation of relevant road surface descriptors for tire-road noise measurements on low-absorbing road surfaces
Experimental investigation of relevant road surface descriptors for tire-road noise measurements on low-absorbing road surfaces

Author: Pinay, Julien

Publisher: KIT Scientific Publishing

Published: 2024-01-16

Total Pages: 196

ISBN-13: 3731513285

DOWNLOAD EBOOK

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.