1.

Record Nr.

UNINA9910454369903321

Autore

Tovstik P. E

Titolo

Asymptotic methods in the buckling theory of elastic shells [[electronic resource] /] / Petr E. Tovstik, Andrei L. Smirnov ; edited by Peter R. Frise, Ardeshir Guran

Pubbl/distr/stampa

Singapore ; ; River Edge, N.J., : World Scientific, 2001

ISBN

1-281-93450-X

9786611934507

981-279-456-5

Descrizione fisica

1 online resource (360 p.)

Collana

Series on stability, vibration, and control of systems. Series A ; ; v. 4

Altri autori (Persone)

SmirnovAndrei L. <1956->

FrisePeter Richard <1958->

GuranA (Ardéshir)

Disciplina

624.17762

Soggetti

Shells (Engineering)

Asymptotic expansions

Differential equations - Asymptotic theory

Electronic books.

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Note generali

Description based upon print version of record.

Nota di bibliografia

Includes bibliographical references (p. 321-334) and index.

Nota di contenuto

Preface; Contents; Introduction; Basic notation; 1 Equations of Thin Elastic Shell Theory; 1.1 Elements of Surface Theory; 1.2 Equilibrium Equations and Boundary Conditions; 1.3 Errors of 2D Shell Theory of Kirchhoff-Love Type; 1.4 Membrane Stress State; 1.5 Technical Shell Theory Equations; 1.6 Technical Theory Equations in the Other Cases; 1.7 Shallow Shells; 1.8 Initial Imperfections; 1.9 Cylindrical Shells; 1.10 The Potential Energy of Shell Deformation; 1.11 Problems and Exercises; 2 Basic Equations of Shell Buckling; 2.1 Types of Elastic Shell Buckling; 2.2 The Buckling Equations

2.3 The Buckling Equations for a Membrane State2.4 Buckling Equations of the General Stress State; 2.5 Problems and Exercises; 3 Simple Buckling Problems; 3.1 Buckling of a Shallow Convex Shell; 3.2 Shallow Shell Buckling Modes; 3.3 The Non-Uniqueness of Buckling Modes; 3.4 A Circular Cylindrical Shell Under Axial Compression; 3.5 A Circular Cylindrical Shell Under External Pressure; 3.6 Estimates of



Critical Load; 3.7 Problems and Examples; 4 Buckling Modes Localized near Parallels; 4.1 Local Shell Buckling Modes; 4.2 Construction Algorithm of Buckling Modes

4.3 Buckling Modes of Convex Shells of Revolution4.4 Buckling of Shells of Revolution Without Torsion; 4.5 Buckling of Shells of Revolution Under Torsion; 4.6 Problems and Exercises; 5 Non-homogeneous Axial Compression of Cylindrical Shells; 5.1 Buckling Modes Localized near Generatrix; 5.2 Reconstruction of the Asymptotic Expansions; 5.3 Axial Compression and Bending of Cylindrical Shell; 5.4 The Influence of Internal Pressure; 5.5 Buckling of a Non-Circular Cylindrical Shell; 5.6 Cylindrical Shell with Curvature of Variable Sign; 5.7 Problems and Exercises

6 Buckling Modes Localized at a Point6.1 Local Buckling of Convex Shells; 6.2 Construction of the Buckling Mode; 6.3 Ellipsoid of Revolution Under Combined Load; 6.4 Cylindrical Shell Under Axial Compression; 6.5 Construction of the Buckling Modes; 6.6 Problems and Exercises; 7 Semi-momentless Buckling Modes; 7.1 Basic Equations and Boundary Conditions; 7.2 Buckling Modes for a Conic Shell; 7.3 Effect of Initial Membrane Stress Resultants; 7.4 Semi-Momentless Buckling Modes of Cylindrical Shells; 7.5 Problems and Exercises; 8 Effect of Boundary Conditions on Semi-momentless Modes

8.1 Construction Algorithm for Semi-Momentless Solutions8.2 Semi-Momentless Solutions; 8.3 Edge Effect Solutions; 8.4 Separation of Boundary Conditions; 8.5 The Effect of Boundary Conditions on the Critical Load; 8.6 Boundary Conditions and Buckling of a Cylindrical Shell; 8.7 Conic Shells Under External Pressure; 8.8 Problems and Exercises; 9 Torsion and Bending of Cylindrical and Conic Shells; 9.1 Torsion of Cylindrical Shells; 9.2 Cylindrical Shell under Combined Loading; 9.3 A Shell with Non-Constant Parameters Under Torsion; 9.4 Bending of a Cylindrical Shell

9.5 The Torsion and Bending of a Conic Shell

Sommario/riassunto

This book contains solutions to the most typical problems of thin elastic shells buckling under conservative loads. The linear problems of bifurcation of shell equilibrium are considered using a two-dimensional theory of the Kirchhoff-Love type. The explicit approximate formulas obtained by means of the asymptotic method permit one to estimate the critical loads and find the buckling modes. The solutions to some of the buckling problems are obtained for the first time in the form of explicit formulas. Special attention is devoted to the study of the shells of negative Gaussian curvature, the b



2.

Record Nr.

UNINA9910580237503321

Autore

Alves Eva Luiz A

Titolo

Anthropologie sceptique et modernité / / Sylvia Giocanti

Pubbl/distr/stampa

Lyon, : ENS Éditions, 2022

ISBN

979-1-03-620529-3

Descrizione fisica

1 online resource (286 p.)

Collana

La croisée des chemins

Altri autori (Persone)

AzarCelso

BettRichard

de NegroniBarbara

EgelNikolaus

GiocantiSylvia

Junqueira SmithPlínio

KünstlerRaphaël

LantoineJacques-Louis

PaganiniGianni

PanichiNicola

PeytavinSophie

TanigawaMasako

TinlandOlivier

VeresMáté

Soggetti

Humanities&#44; Multidisciplinary

Philosophy

Anthropology

scepticisme

homme

nature

croyance

anthropologie

scepticism

humanity

belief

anthropology

Lingua di pubblicazione

Francese

Formato

Materiale a stampa

Livello bibliografico

Monografia



Sommario/riassunto

Le scepticisme est un courant philosophique au sein duquel le doute n’est ni un malaise à surmonter, ni un artifice situé au commencement d’une enquête visant son propre dépassement, mais une manière de discourir et de se tenir dans l’existence. Qu’implique une telle position sur le plan anthropologique ? Que contrairement à ceux qui ont pensé le doute comme une préparation à la foi ou encore à la refondation de la science, il serait plus naturel de douter que de croire ? Les chapitres de ce volume examinent en quoi le doute sceptique moderne, né de sa mise en œuvre dans les Essais de Montaigne, loin d’être une disposition d’esprit négative qui conduirait au désespoir, a pu contribuer à revaloriser l’opinion et la croyance en régime d’incertitude, à réhabiliter l’imagination et les sens, tout en promouvant d’autres usages de la raison. L’ouvrage s’adresse à tous les lectrices et lecteurs qui s’intéressent au renouvellement par le doute de la conception de la philosophie, qu’il s’agisse de ses pratiques discursives comme de ses valeurs. Il invite aussi à réfléchir sur le lien entre le discours philosophique sur l’homme et les sciences de l’homme, lien que la substitution sceptique d’une anthropologie de la relation à l’approche métaphysique de l’homme a rendu possible.  Scepticism is a philosophical current in which doubt is neither a discomfort to be overcome, nor an artifice located at the beginning of an investigation aiming at its own overcoming, but a way of speaking and of standing in existence. What does such a position imply on the anthropological level? That contrary to those who have thought of doubt as a preparation for faith or for the refoundation of science, it is more natural to doubt than to believe? The chapters in this volume examine how modern sceptical doubt, born of its implementation in Montaigne's Essays, far from being a negative disposition of mind that leads to despair, has contributed to revalorizing opinion and belief in a regime of…