Engineering AnalysisPub Date : 1987-12-01Epub Date: 2003-04-03DOI: 10.1016/0264-682X(87)90042-6
S. De León, F. Paris
{"title":"Analysis of thermal stresses in plates with boundary element method","authors":"S. De León, F. Paris","doi":"10.1016/0264-682X(87)90042-6","DOIUrl":"10.1016/0264-682X(87)90042-6","url":null,"abstract":"<div><p>In this paper an integral formulation, dealing with thin plates under thermal load, is presented. The field equation is decomposed into two harmonic equations which are formulated in an integral form by application of Green Second Theorem. The domain integrals which appear in the formulation will be transformed into equivalent boundary integrals, in particular distributions of temperature as well as in a general case where this is known only in a discrete form. In this way, the main advantage of the boundary element method of reducing the dimensions of the problem, is preserved.</p><p>Two examples will be studied to prove the efficiency of the formulation proposed.</p></div>","PeriodicalId":100474,"journal":{"name":"Engineering Analysis","volume":"4 4","pages":"Pages 199-203"},"PeriodicalIF":0.0,"publicationDate":"1987-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0264-682X(87)90042-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89581462","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}
Engineering AnalysisPub Date : 1987-09-01Epub Date: 2003-04-03DOI: 10.1016/0264-682X(87)90010-4
{"title":"Vol. 29 Expert Systems in Production Engineering","authors":"","doi":"10.1016/0264-682X(87)90010-4","DOIUrl":"https://doi.org/10.1016/0264-682X(87)90010-4","url":null,"abstract":"","PeriodicalId":100474,"journal":{"name":"Engineering Analysis","volume":"4 3","pages":"Page 175"},"PeriodicalIF":0.0,"publicationDate":"1987-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0264-682X(87)90010-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136412899","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}
Engineering AnalysisPub Date : 1987-09-01Epub Date: 2003-04-03DOI: 10.1016/0264-682X(87)90002-5
Murry C. Bookman , Gordon J. Savage
{"title":"Element properties by mathematical network methods","authors":"Murry C. Bookman , Gordon J. Savage","doi":"10.1016/0264-682X(87)90002-5","DOIUrl":"10.1016/0264-682X(87)90002-5","url":null,"abstract":"<div><p>This paper investigates the formation of finite element properties by mathematical network techniques. To show the efficacy of the approach the two-dimensional, quadrilateral element is used and the element property for the constitutive characteristic is derived. The element property from network techniques is compared with that derived using standard integration techniques. The comparison includes: the number of computer operations, the form of the element property matrix, and the results when used in various problems. The main finding is that there is a simple network configuration such that the resulting element property matches the performance of the standard elements and yet is derived by about half the number of computations. Some network-finite element advancements are given.</p></div>","PeriodicalId":100474,"journal":{"name":"Engineering Analysis","volume":"4 3","pages":"Pages 135-141"},"PeriodicalIF":0.0,"publicationDate":"1987-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0264-682X(87)90002-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86029116","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}
Engineering AnalysisPub Date : 1987-09-01Epub Date: 2003-04-03DOI: 10.1016/0264-682X(87)90001-3
C. Alessandri , C.A. Brebbia
{"title":"Strength of masonry walls under static horizontal loads: boundary element analysis and experimental tests","authors":"C. Alessandri , C.A. Brebbia","doi":"10.1016/0264-682X(87)90001-3","DOIUrl":"10.1016/0264-682X(87)90001-3","url":null,"abstract":"<div><p>The Boundary Element Method is applied to the static analysis of two masonry walls previously subjected to experimental tests carried out <em>in situ</em> in two different stages. The walls were brought to the point of collapse by applying horizontal loads simulating the seismic actions and then, after being repaired by injections of cement mixtures, they were subjected to a new loading process culminating, as the first one, in the occurrence of the mechanism of collapse.</p><p>In the numerical analysis, carried out under the plane-stress condition, masonry is regarded as a no-tension material with infinite strength in compression and a path-dependent criterion, corresponding to an elasto-plastic material behaviour, is adopted to model the no-tension solution. Linear boundary elements and linear triangular cells are used to transform the solving boundary integral equations into linear algebraic equations. The numerical results are obtained through an iterative incremental process based on the initial stress method: at each step, the no-tension condition is enforced by computing an initial stress field which is used to iterate the solution until the state of no-tension is achieved everywhere. The nonlinear behaviour is modelled by succesively correcting the loading conditions and leaving the elastic stiffness matrix unchanged.</p><p>The B.E. results, in terms of displacement diagrams and internal stress states, are compared with the measurements and the crack patterns recorded during the experimental tests.</p></div>","PeriodicalId":100474,"journal":{"name":"Engineering Analysis","volume":"4 3","pages":"Pages 118-134"},"PeriodicalIF":0.0,"publicationDate":"1987-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0264-682X(87)90001-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88547879","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}
Engineering AnalysisPub Date : 1987-09-01Epub Date: 2003-04-03DOI: 10.1016/0264-682X(87)90004-9
Guillermo J. Creus
{"title":"Finite elastoplastic deformations: basic concepts and applications","authors":"Guillermo J. Creus","doi":"10.1016/0264-682X(87)90004-9","DOIUrl":"10.1016/0264-682X(87)90004-9","url":null,"abstract":"<div><p>The paper is concerned with the representation of isothermal mechanical behavior of an elastoplastic solid that possesses a finite elastic range and exhibits anisotropy in its plastic behavior. The state and orientation of a stress free element is described by means of irreducible rank tensors. A discussion of some difficulties usual in finite strain analysis and applications using finite elements is included.</p></div>","PeriodicalId":100474,"journal":{"name":"Engineering Analysis","volume":"4 3","pages":"Pages 148-154"},"PeriodicalIF":0.0,"publicationDate":"1987-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0264-682X(87)90004-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74774822","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}
Engineering AnalysisPub Date : 1987-09-01Epub Date: 2003-04-03DOI: 10.1016/0264-682X(87)90005-0
L. Hadjikov , V. Valeva , P. Parushev , K. Minkov , P. Dabnishki
{"title":"A joint numerical investigation of the gear stress","authors":"L. Hadjikov , V. Valeva , P. Parushev , K. Minkov , P. Dabnishki","doi":"10.1016/0264-682X(87)90005-0","DOIUrl":"10.1016/0264-682X(87)90005-0","url":null,"abstract":"<div><p>The paper presents a comparison of the Boundary Element Method (BEM) and the Finite Element Method (FEM) for three-dimensional elasticity being determined. Certain applications to the gear teeth stress analysis are discussed.</p><p>The basic equations of both methods are deduced. An approach to their joint application is given.</p><p>Some numerical experiments are carried out for a computation research of the gear stresses. The power of the <strong>BEM, FEM</strong> and joint <strong>BEM-FEM</strong> are compared in such a case. The obtained results are analysed and some <strong>BEM-FEM</strong> fields of applications in the gear stress investigation are discussed briefly.</p></div>","PeriodicalId":100474,"journal":{"name":"Engineering Analysis","volume":"4 3","pages":"Pages 155-159"},"PeriodicalIF":0.0,"publicationDate":"1987-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0264-682X(87)90005-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89427192","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}
Engineering AnalysisPub Date : 1987-09-01Epub Date: 2003-04-03DOI: 10.1016/0264-682X(87)90003-7
H. Shibaike , M. Matsumoto
{"title":"The steady periodic solution for two-dimensional simple and coupled diffusion problems using the boundary element method","authors":"H. Shibaike , M. Matsumoto","doi":"10.1016/0264-682X(87)90003-7","DOIUrl":"10.1016/0264-682X(87)90003-7","url":null,"abstract":"","PeriodicalId":100474,"journal":{"name":"Engineering Analysis","volume":"4 3","pages":"Pages 142-147"},"PeriodicalIF":0.0,"publicationDate":"1987-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0264-682X(87)90003-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84788303","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}
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