Konstantin Naumenko – författare

This second part of the work on creep modeling offers readers essential guidance on practical computational simulation and analysis.

This second part of the work on creep modeling offers readers essential guidance on practical computational simulation and analysis.

This book presents a collection of contributions on advanced approaches to the mechanics of materials and mechanics of structures for high-temperature applications, such as power plant components, engines and turbochargers. The contributions highlight advanced constitutive models for high-temperature materials, as well as new approaches to the efficient modeling and analysis of engineering structures operating in high-temperature environments.

This book presents a collection of contributions on advanced approaches to the mechanics of materials and mechanics of structures for high-temperature applications, such as power plant components, engines and turbochargers.

This book presents various questions of continuum mechanical modeling in the context of experimental and numerical methods, in particular, multi-field problems that go beyond the standard models of continuum mechanics.

This book presents various questions of continuum mechanical modeling in the context of experimental and numerical methods, in particular, multi-field problems that go beyond the standard models of continuum mechanics.

This book offers a current state of the art in analysis and modeling of creep phenomena with applications to the structural mechanics. and applicationof new experimental methods, such as digital image correlation, for the analysis of inelastic deformation under multi-axial stress state.

This book offers a current state of the art in analysis and modeling of creep phenomena with applications to the structural mechanics. and applicationof new experimental methods, such as digital image correlation, for the analysis of inelastic deformation under multi-axial stress state.

This monograph presentsapproaches to characterize inelastic behavior of materials and structures athigh temperature. Starting from experimental observations, it discusses basicfeatures of inelastic phenomena including creep, plasticity, relaxation, lowcycle and thermal fatigue.The authors formulate constitutive equations to describe the inelastic responsefor the given states of stress and microstructure. They introduce evolutionequations to capture hardening, recovery, softening, ageing and damage processes.Principles of continuum mechanics and thermodynamics are presented to provide aframework for the modeling materials behavior with the aim of structuralanalysis of high-temperature engineering components.

This book presents a collection of contributions on the advanced mechanics of materials and mechanics of structures approaches, written in honor of Professor Kienzler. It covers various topics related to constitutive models for advanced materials, recent developments in mechanics of configuration forces, as well as new approaches to the efficient modeling and analysis of engineering structures.

This monograph presentsapproaches to characterize inelastic behavior of materials and structures athigh temperature.

This book presents a collection of contributions on the advanced mechanics of materials and mechanics of structures approaches, written in honor of Professor Kienzler.

"Creep Modeling for Structural Analysis" develops methods to simulate and analyze the time-dependent changes of stress and strain states in engineering structures up to the critical stage of creep rupture. The principal subjects of creep mechanics are the formulation of constitutive equations for creep in structural materials under multi-axial stress states; the application of structural mechanics models of beams, plates, shells and three-dimensional solids and the utilization of procedures for the solution of non-linear initial-boundary value problems. The objective of this book is to review some of the classical and recently proposed approaches to the modeling of creep for structural analysis applications as well as to extend the collection of available solutions of creep problems by new, more sophisticated examples.In Chapter 1, the book discusses basic features of the creep behavior in materials and structures and presents an overview of various approaches to the modeling of creep. Chapter 2 collects constitutive models that describe creep and damage processes under multi-axial stress states. Chapter 3 deals with the application of constitutive models to the description of creep for several structural materials. Constitutive and evolution equations, response functions and material constants are presented according to recently published experimental data. In Chapter 4 the authors discuss structural mechanics problems. Governing equations of creep in three-dimensional solids, direct variational methods and time step algorithms are reviewed. Examples are presented to illustrate the application of advanced numerical methods to the structural analysis. An emphasis is placed on the development and verification of creep-damage material subroutines inside the general purpose finite element codes.

"Creep Modeling for Structural Analysis" develops methods to simulate and analyze the time-dependent changes of stress and strain states in engineering structures up to the critical stage of creep rupture. The principal subjects of creep mechanics are the formulation of constitutive equations for creep in structural materials under multi-axial stress states; the application of structural mechanics models of beams, plates, shells and three-dimensional solids and the utilization of procedures for the solution of non-linear initial-boundary value problems. The objective of this book is to review some of the classical and recently proposed approaches to the modeling of creep for structural analysis applications as well as to extend the collection of available solutions of creep problems by new, more sophisticated examples.In Chapter 1, the book discusses basic features of the creep behavior in materials and structures and presents an overview of various approaches to the modeling of creep. Chapter 2 collects constitutive models that describe creep and damage processes under multi-axial stress states. Chapter 3 deals with the application of constitutive models to the description of creep for several structural materials. Constitutive and evolution equations, response functions and material constants are presented according to recently published experimental data. In Chapter 4 the authors discuss structural mechanics problems. Governing equations of creep in three-dimensional solids, direct variational methods and time step algorithms are reviewed. Examples are presented to illustrate the application of advanced numerical methods to the structural analysis. An emphasis is placed on the development and verification of creep-damage material subroutines inside the general purpose finite element codes.

Das gut eingeführte Werk Ebene Flächentragwerke erscheint nun in der 2. Auflage. Ausgehend von einer Klassifikation der Modelle ebener Flächentragwerke und den Grundgleichungen der linearen Elastizitätstheorie werden zunächst systematisch die Gleichungen für isotrope Scheiben und Platten abgeleitet. Dabei wird ein didaktisch einheitliches Konzept eingesetzt. Die Gleichungen werden in kartesischen Koordinaten, Polarkoordinaten und schiefwinkligen Koordinaten formuliert. In Ergänzung der ersten Auflage wird auch eine Plattentheorie in koordinatenfreier Schreibweise behandelt, so dass der Leser einen leichteren Zugang zu modernen Konzepten der Formulierung von Flächentragwerkstheorien erhält. Die Diskussion der Plattenmodelle nach Kirchhoff, Mindlin und von Kármán zeigt die Möglichkeiten und Grenzen dieser Strukturmodelle.Für schubstarre und schubelastische Platten mit kleinen Durchbiegungen wird auch anisotropes Materialverhalten einbezogen, und es werden die Strukturgleichungen der klassischen Laminattheorie und der Schubdeformationstheorie erster Ordnung angegeben. Es folgt ein kurzer Einblick in Theorien zur Analyse dreischichtiger Platten. Die Berücksichtigung vorgegebener Temperaturfelder erfolgt für alle Plattenmodelle im Rahmen der entkoppelten Thermoelastizität.Der Leser erhält einen umfassenden Überblick über die Anwendung bedeutsamer Strukturmodelle ebener Flächentragwerke. Die nach Aufgabenklassen geordneten zahlreichen Beispiele können als Referenzlösungen zur Testung numerischer Verfahren genutzt werden. Die Aufnahme der sogenannten Reduktionsverfahren von Wlassow und Kantorowitsch soll ihre Leistungsfähigkeit für die Ableitung einfacher und analytischer Näherungslösungen durch die Reduktion der Strukturgleichungen auf eindimensionale Formulierungen verdeutlichen.

This volume presents a collection of contributions on advanced approaches of continuum mechanics, which were written to celebrate the 60th birthday of Prof. Holm Altenbach. The contributions are on topics related to the theoretical foundations for the analysis of rods, shells and three-dimensional solids, formulation of constitutive models for advanced materials, as well as development of new approaches to the modeling of damage and fractures.

This volume presents a collection of contributions on advanced approaches of continuum mechanics, which were written to celebrate the 60th birthday of Prof.

This book discusses several mechanical and material problems that are typical for gas turbine components. The characteristics of creep resistance, crack resistance, and resistance to cyclic deformation of different alloys are given.