Thermodynamically consistent space-time discretization of non-isothermal mechanical systems in the framework of GENERIC

Thermodynamically consistent space-time discretization of non-isothermal mechanical systems in the framework of GENERIC
Author :
Publisher : KIT Scientific Publishing
Total Pages : 238
Release :
ISBN-10 : 9783731511175
ISBN-13 : 3731511177
Rating : 4/5 (75 Downloads)

Synopsis Thermodynamically consistent space-time discretization of non-isothermal mechanical systems in the framework of GENERIC by : Schiebl, Mark Georg

The present work addresses the design of structure-preserving numerical methods that emanate from the general equation for non-equilibrium reversible-irreversible coupling (GENERIC) formalism. Novel energy-momentum (EM) consistent time-stepping schemes in the realm of molecular dynamics are proposed. Moreover, the GENERIC-based structure-preserving numerical methods are extended to the context of large-strain thermoelasticity and thermo-viscoelasticity.

Inverse dynamics of underactuated flexible mechanical systems governed by quasi-linear hyperbolic partial differential equations

Inverse dynamics of underactuated flexible mechanical systems governed by quasi-linear hyperbolic partial differential equations
Author :
Publisher : KIT Scientific Publishing
Total Pages : 174
Release :
ISBN-10 : 9783731513360
ISBN-13 : 3731513366
Rating : 4/5 (60 Downloads)

Synopsis Inverse dynamics of underactuated flexible mechanical systems governed by quasi-linear hyperbolic partial differential equations by : Ströhle, Timo

This work is about the inverse dynamics of underactuated flexible mechanical systems governed by quasi-linear hyperbolic partial differential equations subjected to time-varying Dirichlet boundary conditions that are enforced by unknown, spatially disjunct, hence non-collocated Neumann boundary conditions.

Multi-field modeling and simulation of fiber-reinforced polymers

Multi-field modeling and simulation of fiber-reinforced polymers
Author :
Publisher : KIT Scientific Publishing
Total Pages : 176
Release :
ISBN-10 : 9783731512516
ISBN-13 : 3731512513
Rating : 4/5 (16 Downloads)

Synopsis Multi-field modeling and simulation of fiber-reinforced polymers by : Schulte, Jonathan

This work proposes a new numerical approach for analyzing the behavior of fiber-reinforced materials, which have gained popularity in various applications. The approach combines theories and methods to model the fracture behavior of the polymeric matrix and the embedded fibers separately, and includes a modified plasticity model that considers the temperature-dependent growth of voids. Tests are conducted to explore different types and sequences of failure in long fiber-reinforced polymers.

EAS Elements for Solid Mechanics - Mesh Distortion Insensitive and Hourglassing-Free Formulations with Increased Robustness

EAS Elements for Solid Mechanics - Mesh Distortion Insensitive and Hourglassing-Free Formulations with Increased Robustness
Author :
Publisher : KIT Scientific Publishing
Total Pages : 218
Release :
ISBN-10 : 9783731512714
ISBN-13 : 3731512718
Rating : 4/5 (14 Downloads)

Synopsis EAS Elements for Solid Mechanics - Mesh Distortion Insensitive and Hourglassing-Free Formulations with Increased Robustness by : Pfefferkorn, Robin

Proposed in the early 1990s, the enhanced assumed strain (EAS) method is one of the probably most successful mixed finite element methods for solid mechanics. This cumulative dissertation gives a comprehensive overview of previous publications on that method and covers recent improvements for EAS elements. In particular, we describe three key issues of standard EAS elements and develop corresponding solutions.

Hydrodynamic Fluctuations in Fluids and Fluid Mixtures

Hydrodynamic Fluctuations in Fluids and Fluid Mixtures
Author :
Publisher : Elsevier
Total Pages : 321
Release :
ISBN-10 : 9780080459431
ISBN-13 : 0080459439
Rating : 4/5 (31 Downloads)

Synopsis Hydrodynamic Fluctuations in Fluids and Fluid Mixtures by : Jose M. Ortiz de Zarate

This book deals with density, temperature, velocity and concentration fluctuations in fluids and fluid mixtures. The book first reviews thermal fluctuations in equilibrium fluids on the basis of fluctuating hydrodynamics. It then shows how the method of fluctuating hydrodynamics can be extended to deal with hydrodynamic fluctuations when the system is in a stationary nonequilibrium state. In contrast to equilibrium fluids where the fluctuations are generally short ranged unless the system is close to a critical point, fluctuations in nonequilibrium fluids are always long-ranged encompassing the entire system. The book provides the first comprehensive treatment of fluctuations in fluids and fluid mixtures brought out of equilibrium by the imposition of a temperature and concentration gradient but that are still in a macroscopically quiescent state. By incorporating appropriate boundary conditions in the case of fluid layers, it is shown how fluctuating hydrodynamics affects the fluctuations close to the onset of convection. Experimental techniques of light scattering and shadowgraphy for measuring nonequilibrium fluctuations are elucidated and the experimental results thus far reported in the literature are reviewed.· Systematic exposition of fluctuating hydrodynamics and its applications· First book on nonequilibrium fluctuations in fluids· Fluctuating Boussinesq equations and nonequilibrium fluids· Fluid layers and onset of convection· Rayleigh scattering and Brillouin scattering in fluids· Shadowgraph technique for measuring fluctuations· Fluctuations near hydrodynamic instabilities

Computational Contact Mechanics

Computational Contact Mechanics
Author :
Publisher : Springer Science & Business Media
Total Pages : 252
Release :
ISBN-10 : 9783211772980
ISBN-13 : 3211772987
Rating : 4/5 (80 Downloads)

Synopsis Computational Contact Mechanics by : Peter Wriggers

Topics of this book span the range from spatial and temporal discretization techniques for contact and impact problems with small and finite deformations over investigations on the reliability of micromechanical contact models over emerging techniques for rolling contact mechanics to homogenization methods and multi-scale approaches in contact problems.

Statistical Mechanics of Lattice Systems

Statistical Mechanics of Lattice Systems
Author :
Publisher : Cambridge University Press
Total Pages : 643
Release :
ISBN-10 : 9781107184824
ISBN-13 : 1107184827
Rating : 4/5 (24 Downloads)

Synopsis Statistical Mechanics of Lattice Systems by : Sacha Friedli

A self-contained, mathematical introduction to the driving ideas in equilibrium statistical mechanics, studying important models in detail.

Exergy Method

Exergy Method
Author :
Publisher : WIT Press
Total Pages : 189
Release :
ISBN-10 : 9781853127533
ISBN-13 : 1853127531
Rating : 4/5 (33 Downloads)

Synopsis Exergy Method by : Jan Szargut

The exergy method makes it possible to detect and quantify the possibilities of improving thermal and chemical processes and systems. The introduction of the concept thermo-ecological cost (cumulative consumption of non-renewable natural exergy resources) generated large application possibilities of exergy in ecology. This book contains a short presentation on the basic principles of exergy analysis and discusses new achievements in the field over the last 15 years. One of the most important issues considered by the distinguished author is the economy of non-renewable natural exergy. Previously discussed only in scientific journals, other important new problems highlighted include: calculation of the chemical exergy of all the stable chemical elements, global natural and anthropogenic exergy losses, practical guidelines for improvement of the thermodynamic imperfection of thermal processes and systems, development of the determination methods of partial exergy losses in thermal systems, evaluation of the natural mineral capital of the Earth, and the application of exergy for the determination of a pro-ecological tax.A basic knowledge of thermodynamics is assumed, and the book is therefore most appropriate for graduate students and engineers working in the field of energy and ecological management.

Continuum Mechanics and Thermodynamics

Continuum Mechanics and Thermodynamics
Author :
Publisher : Cambridge University Press
Total Pages : 373
Release :
ISBN-10 : 9781107008267
ISBN-13 : 1107008263
Rating : 4/5 (67 Downloads)

Synopsis Continuum Mechanics and Thermodynamics by : Ellad B. Tadmor

Treats subjects directly related to nonlinear materials modeling for graduate students and researchers in physics, materials science, chemistry and engineering.

A History of Thermodynamics

A History of Thermodynamics
Author :
Publisher : Springer Science & Business Media
Total Pages : 336
Release :
ISBN-10 : 9783540462279
ISBN-13 : 3540462279
Rating : 4/5 (79 Downloads)

Synopsis A History of Thermodynamics by : Ingo Müller

This book offers an easy to read, all-embracing history of thermodynamics. It describes the long development of thermodynamics, from the misunderstood and misinterpreted to the conceptually simple and extremely useful theory that we know today. Coverage identifies not only the famous physicists who developed the field, but also engineers and scientists from other disciplines who helped in the development and spread of thermodynamics as well.