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Fracture mechanics has established itself as an important
discipline of growing interest to those working to assess the
safety, reliability and service life of engineering structures and
materials. In order to calculate the loading situation at cracks
and defects, nowadays numerical techniques like finite element
method (FEM) have become indispensable tools for a broad range of
applications. The present monograph provides an introduction to the
essential concepts of fracture mechanics, its main goal being to
procure the special techniques for FEM analysis of crack problems,
which have to date only been mastered by experts. All kinds of
static, dynamic and fatigue fracture problems are treated in two-
and three-dimensional elastic and plastic structural components.
The usage of the various solution techniques is demonstrated by
means of sample problems selected from practical engineering case
studies. The primary target group includes graduate students,
researchers in academia and engineers in practice.
Today, multi-functional materials such as
piezoelectric/ferroelectric ceramics, magneto-strictive and shape
memory alloys are gaining increasing applications as sensors,
actuators or smart composite materials systems for emerging high
tech areas. The stable performance and reliability of these smart
components under complex service loads is of paramount practical
importance. However, most multi-functional materials suffer from
various mechanical and/or electro-magnetical degra-dation
mechanisms as fatigue, damage and fracture. Therefore, this
exciting topic has become a challenge to intensive international
research, provoking the interdisciplinary approach between solid
mechanics, materials science and physics. This book summarizes the
outcome of the above mentioned IUTAM-symposium, assembling
contributions by leading scientists in this area. Particularly, the
following topics have been addressed: (1) Development of
computational methods for coupled electromechanical field analysis,
especially extended, adaptive and multi-level finite elements. (2)
Constitutive modeling of non-linear smart material behavior with
coupled electric, magnetic, thermal and mechanical fields,
primarily based on micro-mechanical models. (3) Investigations of
fracture and fatigue in piezoelectric and ferroelectric ceramics by
means of process zone modeling, phase field simulation and
configurational mechanics. (4) Reliability and durability of
sensors and actuators under in service loading by alternating
mechanical, electrical and thermal fields. (5) Experimental methods
to measure fracture strength and to investigate fatigue crack
growth in ferroelectric materials under electromechanical loading.
(6) New ferroelectric materials, compounds and composites with
enhanced strain capabilities.
Today, multi-functional materials such as
piezoelectric/ferroelectric ceramics, magneto-strictive and shape
memory alloys are gaining increasing applications as sensors,
actuators or smart composite materials systems for emerging high
tech areas. The stable performance and reliability of these smart
components under complex service loads is of paramount practical
importance. However, most multi-functional materials suffer from
various mechanical and/or electro-magnetical degra-dation
mechanisms as fatigue, damage and fracture. Therefore, this
exciting topic has become a challenge to intensive international
research, provoking the interdisciplinary approach between solid
mechanics, materials science and physics. This book summarizes the
outcome of the above mentioned IUTAM-symposium, assembling
contributions by leading scientists in this area. Particularly, the
following topics have been addressed: (1) Development of
computational methods for coupled electromechanical field analysis,
especially extended, adaptive and multi-level finite elements. (2)
Constitutive modeling of non-linear smart material behavior with
coupled electric, magnetic, thermal and mechanical fields,
primarily based on micro-mechanical models. (3) Investigations of
fracture and fatigue in piezoelectric and ferroelectric ceramics by
means of process zone modeling, phase field simulation and
configurational mechanics. (4) Reliability and durability of
sensors and actuators under in service loading by alternating
mechanical, electrical and thermal fields. (5) Experimental methods
to measure fracture strength and to investigate fatigue crack
growth in ferroelectric materials under electromechanical loading.
(6) New ferroelectric materials, compounds and composites with
enhanced strain capabilities.
Fur die Gewahrleistung der technischen Sicherheit, Lebensdauer und
Zuverlassigkeit technischer Konstruktionen (Bauteile, Anlagen)
spielt die bruchmechanische Bewertung von rissartigen Fehlern eine
zunehmende Rolle. Um die Beanspruchungssituation an Rissen zu
berechnen, werden heutzutage in verstarktem Masse numerische
Methoden wie die FEM eingesetzt. Das vorliegende Fachbuch stellt
die wesentlichen bruchmechanischen Konzepte vor, vermittelt
schwerpunktmassig die speziellen Techniken zur FEM-Analyse von
Rissproblemen, die bisher nur Spezialisten vorbehalten waren, und
gibt anhand zahlreicher Beispiele effektive Anleitung zur Loesung
praktischer Aufgaben. Das Buch richtet sich an Studenten im
Hauptstudium, Doktoranden und Ingenieure aus dem Maschinenbau,
Bauingenieurwesen, Werkstoffwissenschaften sowie Luft- und
Raumfahrt, die auf den Gebieten Technische Mechanik,
Festigkeitsnachweis, sicherheitstechnische Bewertung, Bruchmechanik
und Werkstofftechnik tatig sind.
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