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Author: E. Macha
Publisher: Elsevier
ISBN: 008053712X
Category : Technology & Engineering
Languages : en
Pages : 289
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Book Description
This volume contains 18 papers selected from 90 presented at the Fifth International Conference on Biaxial/Multiaxial Fatigue and Fracture held in Cracow, Poland 8-12 September 1997. The papers in this book deal with theoretical, computational and experimental aspects of the multiaxial fatigue and fracture of engineering materials and structures. The papers are divided into the following four categories: 1. Proportional cyclic loading 2. Non-proportional cyclic loading 3. Variable amplitude and random loading 4. Crack growthMost papers in this publication talk about the behaviour of constructional materials and elements of machines under non-proportional loading and under variable amplitude and random loading, which are more realistic load histories met in industrial practice. Variable amplitude loading under cyclic load with basic frequency and random loading under load with a continuous band of frequency is classified here. This book gives a review of the latest world success and directions of investigations on multiaxial fatigue and fracture. More and more often publications are results of the co-operation of researchers from different laboratories and countries. Seven out of eighteen papers included here were worked out by international authors teams. This is a symptom of the times, when science and investigations know no borders.
Author: E. Macha
Publisher: Elsevier
ISBN: 008053712X
Category : Technology & Engineering
Languages : en
Pages : 289
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Book Description
This volume contains 18 papers selected from 90 presented at the Fifth International Conference on Biaxial/Multiaxial Fatigue and Fracture held in Cracow, Poland 8-12 September 1997. The papers in this book deal with theoretical, computational and experimental aspects of the multiaxial fatigue and fracture of engineering materials and structures. The papers are divided into the following four categories: 1. Proportional cyclic loading 2. Non-proportional cyclic loading 3. Variable amplitude and random loading 4. Crack growthMost papers in this publication talk about the behaviour of constructional materials and elements of machines under non-proportional loading and under variable amplitude and random loading, which are more realistic load histories met in industrial practice. Variable amplitude loading under cyclic load with basic frequency and random loading under load with a continuous band of frequency is classified here. This book gives a review of the latest world success and directions of investigations on multiaxial fatigue and fracture. More and more often publications are results of the co-operation of researchers from different laboratories and countries. Seven out of eighteen papers included here were worked out by international authors teams. This is a symptom of the times, when science and investigations know no borders.
Author: Jean-Louis Robert
Publisher:
ISBN:
Category :
Languages : fr
Pages :
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Book Description
LA FINALITE DE CETTE THESE CONCERNE L'ESTIMATION DE LA DUREE DE VIE EN FATIGUE MULTIAXIALE SOUS CHARGEMENT ALEATOIRE. L'IDEE DE BASE, QUI EST D'ADAPTER LES CRITERES DE DUREE DE VIE ILLIMITEE ET LES METHODES DE COMPTAGE RAINFLOW A CE PROBLEME, REQUIERT DONC UNE ETUDE PREALABLE DANS CES 2 DOMAINES. D'ABORD 5 CRITERES CLASSIQUES DE FATIGUE POUR DES SOLLICITATIONS PERIODIQUES MULTIAXIALES SONT ANALYSES. UN NOUVEAU CRITERE EST FORMULE, A PARTIR DES COMPOSANTES NORMALES ET TANGENTIELLES S'EXERCANT SUR LA FACETTE CRITIQUE. LA COMPARAISON DE TOUS LES CRITERES EST ETABLIE A L'AIDE DE 100 ESSAIS DE LA LITTERATURE. NOTRE PROPOSITION EST PARTICULIEREMENT BIEN ADAPTEE AU CAS DES ESSAIS A DIRECTIONS PRINCIPALES DES CONTRAINTES FIXES. L'ANALYSE CRITIQUE DE 4 METHODES DE COMPTAGE DE TYPE RAINFLOW EST ENSUITE MENEE ET ABOUTIT A UNE NOUVELLE PROCEDURE SIMPLIFIEE. DEUX METHODES DE COMPARAISON SONT DEVELOPPEES: CUMULATIFS RAINFLOW TRAITES A L'AIDE D'UNE LOI DE DENSITE DE PROBABILITES ET DUREES DE VIE THEORIQUES AVEC APPROCHE LINEAIRE OU NON. DES SPECTRES ENREGISTRES SUR DES PIECES DE CAMION ILLUSTRENT CES DEMARCHES. UNE METHODE DE CALCUL DE LA DUREE DE VIE DANS LE CAS DE LA FATIGUE MULTIAXIALE ALEATOIRE EST PROPOSEE. VARIABLE DE COMPTAGE ET CRITERE, BASES L'UNE ET L'AUTRE SUR LA CONTRAINTE TANGENTIELLE OCTAEDRIQUE, SONT PRESENTES. LES CALAGES SONT EFFECTUES SUR LES ESSAIS DE LA PREMIERE PARTIE, UNE APPLICATION EST REALISEE SUR LES SPECTRES DE LA SECONDE
Author: Claude Bathias
Publisher: John Wiley & Sons
ISBN: 1118617223
Category : Technology & Engineering
Languages : en
Pages : 279
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Book Description
The design of mechanical structures with predictable and improved durability cannot be achieved without a thorough understanding of the mechanisms of fatigue damage and more specifically the relationships between the microstructure of materials and their fatigue properties. Written by leading researchers in the field, this book, along with the complementary books Fatigue of Materials and Structures: Fundamentals and Application to Damage and Design (both also edited by Claude Bathias and André Pineau), provides an authoritative, comprehensive and unified treatment of the mechanics and micromechanisms of fatigue in metals, polymers and composites. Each chapter is devoted to one of the major classes of materials or to different types of fatigue damage, thereby providing overall coverage of the field. This book deals with multiaxial fatigue, thermomechanical fatigue, fretting-fatigue, influence of defects on fatigue life, cumulative damage and damage tolerance, and will be an important and much used reference for students, practicing engineers and researchers studying fracture and fatigue in numerous areas of materials science and engineering, mechanical, nuclear and aerospace engineering.
Author: BIENVENU.. KENMEUGNE
Publisher:
ISBN:
Category :
Languages : fr
Pages : 288
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Book Description
LE TRAVAIL PRESENTE DANS CETTE THESE CONCERNE L'OPTIMISATION DES CRITERES DE FATIGUE EN CONTRAINTE ET UNE NOUVELLE METHODE GENERALE D'ESTIMATION DE DUREE DE VIE EN FATIGUE MULTIAXIALE D'AMPLITUDE VARIABLE. IL COMPORTE TROIS PARTIES PRINCIPALES: LA PREMIERE PARTIE TRAITE D'UN PASSAGE CONTINU ENTRE LES DEUX APPROCHES PROPOSEES PAR LE LABORATOIRE (APPROCHE GLOBALE ET CELLE DITE DU PLAN CRITIQUE), D'UNE MEILLEURE PRISE EN COMPTE DE L'INFLUENCE EN FATIGUE DES FORTES CONTRAINTES MOYENNES DE COMPRESSION, ET D'UN NOUVEAU CRITERE D'APPROCHE GLOBALE METTANT SUR UN PLAN D'EGALITE TOUS LES PLANS PHYSIQUES POSSIBLES. LA DEUXIEME PARTIE DU TRAVAIL CONCERNE L'OPTIMISATION DES TEMPS DE CALCUL DES CRITERES PAR LE BIAIS DE DIVERS ALGORITHMES DE DETERMINATION DES PARAMETRES DES CONTRAINTES ET L'OBTENTION DU PLAN CRITIQUE OU DE L'INDICE DE FATIGUE DU CRITERE, SUIVANT L'APPROCHE UTILISEE. LE TRAVAIL REALISE A PERMIS DE DIMINUER FORTEMENT LES TEMPS DE CALCUL SANS ALTERER LA PRECISION DES RESULTATS OBTENUS. LA DERNIERE PARTIE DE CETTE THESE CONSISTE A PROPOSER ET VALIDER UNE NOUVELLE METHODE D'ESTIMATION DE DUREE DE VIE EN FATIGUE MULTIAXIALE D'AMPLITUDE VARIABLE, GRACE A UNE NOUVELLE VARIABLE DE COMPTAGE DES CYCLES, PLUS PHYSIQUE QUE CELLE EMPLOYEE JUSQU'ALORS ET AMELIORANT SA REPRESENTATIVITE DU CARACTERE CYCLIQUE DES SOLLICITATIONS. CE TRAVAIL PERMET AUJOURD'HUI A LA METHODE GENERALE DU L.M.SO. D'ETRE EXPLOITABLE EN MILIEU INDUSTRIEL GRACE A UN GAIN DE PLUS DE 99% DES TEMPS DE CALCUL PAR RAPPORT A CE QUI EXISTAIT AUPARAVANT
Author: G. Lütjering
Publisher: Elsevier
ISBN: 008055282X
Category : Technology & Engineering
Languages : en
Pages : 755
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Book Description
The aim of the 6th International Fatigue Congress, besides covering the entire field of fatigue, was to promote the intimate connection between basic science and engineering application by the selection of appropriate session topics.Fatigue is the main cause of failure of engineering structures and components. Making reliable fatigue predictions is highly difficult because knowledge about fatigue mechanisms in all stages of the fatigue process must be developed much further. In addition, the decreasing availability of raw materials and energy resources forces engineers to continually reduce the weight of constructions. This congress presents research results also particularly for new materials, including composites. Researchers, on the other hand, are confronted with the engineering demands. Futhermore, the overwhelming development which is presently taking place in the field of computer software and hardware dealing with fatigue problems is outlined along with the directions of future developments in all areas of fatigue.Close to 300 fully peer-reviewed papers are published in the proceedings, including nearly 30 overview and keynote papers covering the various session topics. The proceedings should therefore serve as a comprehensive review of the fatigue field at the present state-of-the-art, suitable for scientists, engineers and students.
Author: C. Amzallag
Publisher: ASTM International
ISBN: 0803119852
Category : Fracture mechanics
Languages : en
Pages : 668
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Book Description
Author: Donatien Le Houédec
Publisher:
ISBN:
Category :
Languages : fr
Pages : 0
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Book Description
Author: IMechE (Institution of Mechanical Engineers)
Publisher: John Wiley & Sons
ISBN: 9781860583308
Category : Technology & Engineering
Languages : en
Pages : 554
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Book Description
This text presents the interactions from an international conference organized by the Fluid Machinery Group of the IMechE. The papers provide an up-to-date resume of compressors, refigeration, energy efficency, lubrication and sealing oils, and novel machines.
Author: Tarak Bouraoui
Publisher: Springer Nature
ISBN: 3030864464
Category : Technology & Engineering
Languages : en
Pages : 474
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Book Description
This book reports on recent findings and applications relating to structure modeling and computation, design methodology, advanced manufacturing, mechanical behavior of materials, fluid mechanics, energy, and heat transfer. Further, it highlights cutting-edge issues in biomechanics and mechanobiology, and describes simulation and intelligent techniques applied to the control of industrial processes. Chapters are based on a selection of original peer-reviewed papers presented at the 5th International Tunisian Congress on Mechanics, COTUME, which was held on March 22–24, 2021, from Hammamet, Tunisia, in hybrid format. All in all, the book offers a good balance of fundamental research and industrially relevant applications, and an in-depth analysis of the current state of the art and challenges in various subfields of mechanical engineering; it provides researchers and professionals with a timely snapshot and a source of inspiration for future research and collaborations.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 652
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Book Description
