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Comptes Rendus de l'Académie des Sciences - Series IIB - Mechanics最新文献

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Index par auteurs (vol. 329) 作者索引(第329卷)
Comptes Rendus de l'Académie des Sciences - Series IIB - Mechanics Pub Date : 2001-12-01 DOI: 10.1016/S1620-7742(01)01424-6
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引用次数: 0
On the sliding mode control of mechanical systems 机械系统的滑模控制
Comptes Rendus de l'Académie des Sciences - Series IIB - Mechanics Pub Date : 2001-12-01 DOI: 10.1016/S1620-7742(01)01407-6
Giorgio Bartolini , Franco Parodi , Elisabetta Punta , Tullio Zolezzi
{"title":"On the sliding mode control of mechanical systems","authors":"Giorgio Bartolini ,&nbsp;Franco Parodi ,&nbsp;Elisabetta Punta ,&nbsp;Tullio Zolezzi","doi":"10.1016/S1620-7742(01)01407-6","DOIUrl":"10.1016/S1620-7742(01)01407-6","url":null,"abstract":"<div><p>We consider the control of mechanical systems based on sliding mode control techniques. Recently developed simplex control methods are shown to converge in a finite time when applied to nonlinear systems under bounded deterministic uncertainty. Applications are considered to the control of mechanical systems in which the control action is provided by monodirectional devices.</p></div>","PeriodicalId":100302,"journal":{"name":"Comptes Rendus de l'Académie des Sciences - Series IIB - Mechanics","volume":"329 12","pages":"Pages 835-842"},"PeriodicalIF":0.0,"publicationDate":"2001-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1620-7742(01)01407-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84147522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Comportement thermomécanique d'un béton ordinaire en compression cyclée : expérience et modélisation 普通混凝土在循环压缩下的热力学行为:实验和建模
Comptes Rendus de l'Académie des Sciences - Series IIB - Mechanics Pub Date : 2001-12-01 DOI: 10.1016/S1620-7742(01)01415-5
Vincent Huon , Olivier Maisonneuve , Bruno Cousin
{"title":"Comportement thermomécanique d'un béton ordinaire en compression cyclée : expérience et modélisation","authors":"Vincent Huon ,&nbsp;Olivier Maisonneuve ,&nbsp;Bruno Cousin","doi":"10.1016/S1620-7742(01)01415-5","DOIUrl":"10.1016/S1620-7742(01)01415-5","url":null,"abstract":"<div><p>Infrared thermography observations permit to show thermal phenomena occurring on a plain concrete during a compressive test. A modelling of the thermomechanical behaviour of this materials is proposed as an extension of M. Frémond and B. Nedjar's model. It permits an interesting dialog between the experimental results and those obtained by a numerical simulation of a simple compressive test.</p></div>","PeriodicalId":100302,"journal":{"name":"Comptes Rendus de l'Académie des Sciences - Series IIB - Mechanics","volume":"329 12","pages":"Pages 889-896"},"PeriodicalIF":0.0,"publicationDate":"2001-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1620-7742(01)01415-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74825007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Méthode couplée CVFE/BE pour les calculs acoustiques en domaine non borné 无边界域声学计算的耦合CVFE/BE方法
Comptes Rendus de l'Académie des Sciences - Series IIB - Mechanics Pub Date : 2001-12-01 DOI: 10.1016/S1620-7742(01)01412-X
Christian Prax , Nadia Masse , Michel Guilbaud
{"title":"Méthode couplée CVFE/BE pour les calculs acoustiques en domaine non borné","authors":"Christian Prax ,&nbsp;Nadia Masse ,&nbsp;Michel Guilbaud","doi":"10.1016/S1620-7742(01)01412-X","DOIUrl":"10.1016/S1620-7742(01)01412-X","url":null,"abstract":"<div><p>A new method based on the flux conservation for acoustic computations in unbounded domain is presented. The domain is divided in outer and inner regions by a fictitious boundary. The inner problem is solved by a control volume finite element method while the outer flow is treated with a boundary element method. The coupling of the two sub-domains is performed using an appropriate expression for the outgoing fluxes satisfying the Sommerfeld condition. A two-dimensional configuration with a circular interface is considered to show that the method is effective. Results of this method are compared to an analytical solution and to results from the literature.</p></div>","PeriodicalId":100302,"journal":{"name":"Comptes Rendus de l'Académie des Sciences - Series IIB - Mechanics","volume":"329 12","pages":"Pages 865-872"},"PeriodicalIF":0.0,"publicationDate":"2001-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1620-7742(01)01412-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75992508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Un modèle de stratifiés 层压板的模型
Comptes Rendus de l'Académie des Sciences - Series IIB - Mechanics Pub Date : 2001-12-01 DOI: 10.1016/S1620-7742(01)01413-1
Alberto Diaz Diaz, Jean-François Caron, Rui Pedro Carreira
{"title":"Un modèle de stratifiés","authors":"Alberto Diaz Diaz,&nbsp;Jean-François Caron,&nbsp;Rui Pedro Carreira","doi":"10.1016/S1620-7742(01)01413-1","DOIUrl":"10.1016/S1620-7742(01)01413-1","url":null,"abstract":"<div><p>A multi-particle model called <em>M4-5n</em> is proposed for the study of multi-layers having elastic and inelastic strains in the layers and non-continuous displacements at the interfaces between layers. We use Hellinger–Reissner's variational formulation to set up the model. Inelastic fields are supposed to be known in the modelling.</p></div>","PeriodicalId":100302,"journal":{"name":"Comptes Rendus de l'Académie des Sciences - Series IIB - Mechanics","volume":"329 12","pages":"Pages 873-879"},"PeriodicalIF":0.0,"publicationDate":"2001-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1620-7742(01)01413-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77211766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
Instabilités bidimensionnelles d'une couche libre cisaillée d'origine électromagnétique 电磁源自由剪切层的二维不稳定性
Comptes Rendus de l'Académie des Sciences - Series IIB - Mechanics Pub Date : 2001-12-01 DOI: 10.1016/S1620-7742(01)01414-3
Philippe Lieutaud, Marie-Christine Neel
{"title":"Instabilités bidimensionnelles d'une couche libre cisaillée d'origine électromagnétique","authors":"Philippe Lieutaud,&nbsp;Marie-Christine Neel","doi":"10.1016/S1620-7742(01)01414-3","DOIUrl":"10.1016/S1620-7742(01)01414-3","url":null,"abstract":"<div><p>The stability of a free shear layer, with one-directional velocity field, is addressed. The studied configuration is a special case among the quasi-two-dimensional motions, induced in an electro-conducting and incompressible fluid by a strong magnetic field, superimposed to electric current. The limit of unconditional stability of the shear flow is computed. When the electric current is under the threshold, every deviation from the basic state is monotonically damped. The result holds without any restriction, connected with the size of the perturbations. Patterns set on just above the unconditional stability limit, in the form of small vortices, on the slow side of the shear layer.</p></div>","PeriodicalId":100302,"journal":{"name":"Comptes Rendus de l'Académie des Sciences - Series IIB - Mechanics","volume":"329 12","pages":"Pages 881-887"},"PeriodicalIF":0.0,"publicationDate":"2001-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1620-7742(01)01414-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85311347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Realizable compressibility and conductivity in isotropic two-phase composites 各向同性两相复合材料的可实现压缩性和导电性
Comptes Rendus de l'Académie des Sciences - Series IIB - Mechanics Pub Date : 2001-12-01 DOI: 10.1016/S1620-7742(01)01410-6
Pierre Gilormini
{"title":"Realizable compressibility and conductivity in isotropic two-phase composites","authors":"Pierre Gilormini","doi":"10.1016/S1620-7742(01)01410-6","DOIUrl":"10.1016/S1620-7742(01)01410-6","url":null,"abstract":"<div><p>It is shown in a very simple manner how any bulk modulus and any conductivity of isotropic two-phase composites located between the Hashin and Shtrikman bounds can be realized exactly by suitable microstructures. The latter are assemblages of two types of composite spheres.</p></div>","PeriodicalId":100302,"journal":{"name":"Comptes Rendus de l'Académie des Sciences - Series IIB - Mechanics","volume":"329 12","pages":"Pages 851-855"},"PeriodicalIF":0.0,"publicationDate":"2001-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1620-7742(01)01410-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76184951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Quelques remarques sur la dynamique Hamiltonienne des tourbillons 关于涡旋哈密顿动力学的一些评论
Comptes Rendus de l'Académie des Sciences - Series IIB - Mechanics Pub Date : 2001-12-01 DOI: 10.1016/S1620-7742(01)01417-9
Stéphane Decossin , Vadim Pavlov
{"title":"Quelques remarques sur la dynamique Hamiltonienne des tourbillons","authors":"Stéphane Decossin ,&nbsp;Vadim Pavlov","doi":"10.1016/S1620-7742(01)01417-9","DOIUrl":"10.1016/S1620-7742(01)01417-9","url":null,"abstract":"<div><p>This work deals with the determination of a general formulation of the Hamiltonian approach applicable to an arbitrary distribution of vorticity. The numerical results display the importance of the respect of the laws of conservation. A model which guarantees the respect of them is presented.</p></div>","PeriodicalId":100302,"journal":{"name":"Comptes Rendus de l'Académie des Sciences - Series IIB - Mechanics","volume":"329 12","pages":"Pages 901-906"},"PeriodicalIF":0.0,"publicationDate":"2001-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1620-7742(01)01417-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73310666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Conditions aux limites absorbantes sur des frontières libres 自由边界上的吸收边界条件
Comptes Rendus de l'Académie des Sciences - Series IIB - Mechanics Pub Date : 2001-12-01 DOI: 10.1016/S1620-7742(01)01411-8
Azeddine Kourta, Renaud Sauvage
{"title":"Conditions aux limites absorbantes sur des frontières libres","authors":"Azeddine Kourta,&nbsp;Renaud Sauvage","doi":"10.1016/S1620-7742(01)01411-8","DOIUrl":"10.1016/S1620-7742(01)01411-8","url":null,"abstract":"<div><p>To ensure the exit of vortices from an open computational domain, new boundary conditions for compressible Navier–Stokes equations, called ‘absorbing conditions’, are introduced. They use a layer around computational domain which eliminates nonphysical perturbations. They are compared to three kinds of boundary conditions based on characteristic relations. Computations of two test cases show the best behaviours of the new boundary conditions. These last ones involve a very small perturbation and can be used to solve aeroacoustic problems.</p></div>","PeriodicalId":100302,"journal":{"name":"Comptes Rendus de l'Académie des Sciences - Series IIB - Mechanics","volume":"329 12","pages":"Pages 857-864"},"PeriodicalIF":0.0,"publicationDate":"2001-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1620-7742(01)01411-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77567891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Adoucissement d'un superalliage base nickel sous-vieilli en fatigue oligocyclique 低循环疲劳下镍基高温合金的软化
Comptes Rendus de l'Académie des Sciences - Series IIB - Mechanics Pub Date : 2001-12-01 DOI: 10.1016/S1620-7742(01)01409-X
Véronique Ferney
{"title":"Adoucissement d'un superalliage base nickel sous-vieilli en fatigue oligocyclique","authors":"Véronique Ferney","doi":"10.1016/S1620-7742(01)01409-X","DOIUrl":"10.1016/S1620-7742(01)01409-X","url":null,"abstract":"<div><p>Like most of the alloys containing shearable precipitates, the under-aged Waspaloy hardens in low-cycle fatigue to a maximum stress and presents a subsequent softening period. Although this phenomenon is known to be due to repeated precipitate shearing by dislocations, the softening corresponds to a decrease of the kinematic hardening. Microscopic observations lead to understand the physical origin of the softening and the importance of the reversibility.</p></div>","PeriodicalId":100302,"journal":{"name":"Comptes Rendus de l'Académie des Sciences - Series IIB - Mechanics","volume":"329 12","pages":"Pages 843-850"},"PeriodicalIF":0.0,"publicationDate":"2001-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1620-7742(01)01409-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87946035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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