Fabio H Realpe, Yasser H Ochoa, Francisco Franco, P. J. Díaz
{"title":"Solución del problema de Kirsch mediante elementos libres de malla, utilizando funciones de interpolación de base radial","authors":"Fabio H Realpe, Yasser H Ochoa, Francisco Franco, P. J. Díaz","doi":"10.17230/INGCIENCIA.13.26.1","DOIUrl":null,"url":null,"abstract":"espanolEl problema de Kirsch publicado en 1898, es utilizado como base para corroborar la precision relativa de los metodos numericos desarrollados en la mecanica de solidos. Por esta razon se utiliza la solucion de este problema para evaluar la precision del metodo numerico Mfree con una funcion de forma utilizando los puntos radiales de interpolacion, en el metodo numerico libre de malla. El metodo de puntos radiales de interpolacion es una tecnica de interpolacion utilizada para construir funciones de forma con nodos distribuidos localmente en una formulacion debil la cual permite representar el problema como un sistema de ecuaciones. El tipo de funciones mas usuales son las funciones polinomiales o funciones de base radial MQ (RBF, radio basis functions), la cual fue utilizada por la estabilidad que presenta al momento de solucionar el problema numericamente. Para hacer la comparacion se uso la solucion analitica dada por Kirsch y la solucion numerica desarrollada en el presente trabajo, obtenido un error del 0.00899% lo que muestra que la tecnica Mfree con bases radiales de interpolacion MQ son precisas y confiables al momento de ser utilizadas como metodo numerico de analisis. EnglishThe problem of Kirsch published in 1898, is used as a basis for corroborating the relative precision of numerical methods developed in the mechanics of solids. For this reason, the solution of this problem is used to evaluate the accuracy of the Mfree numerical method with a function of form using the radial points of interpolation, in the mesh-free numerical method. The radial points of interpolation method (RPIM) is an interpolation technique used to construct form functions with locally distributed nodes in a weak formulation that allows the representation of the problem as a system of equations. The most common type of functions are the polynomial functions or MQ radial basis functions (RBF), which was used for the stability it presents at the moment of solving the problem numerically. The most common type of functions are the polynomial functions or radial basis functions (RBF), which was used for the stability it presents at the moment of solving the problem numerically. To make the comparison we used the analytical solution given by Kirsch and the numerical solution developed in the present work, obtained an error of 0.00899%, which shows that the Mfree technique with radial bases of interpolation MQ are accurate and reliable when used as a numerical method of analysis.","PeriodicalId":30405,"journal":{"name":"Ingenieria y Ciencia","volume":"13 1","pages":"11-38"},"PeriodicalIF":0.0000,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ingenieria y Ciencia","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.17230/INGCIENCIA.13.26.1","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
espanolEl problema de Kirsch publicado en 1898, es utilizado como base para corroborar la precision relativa de los metodos numericos desarrollados en la mecanica de solidos. Por esta razon se utiliza la solucion de este problema para evaluar la precision del metodo numerico Mfree con una funcion de forma utilizando los puntos radiales de interpolacion, en el metodo numerico libre de malla. El metodo de puntos radiales de interpolacion es una tecnica de interpolacion utilizada para construir funciones de forma con nodos distribuidos localmente en una formulacion debil la cual permite representar el problema como un sistema de ecuaciones. El tipo de funciones mas usuales son las funciones polinomiales o funciones de base radial MQ (RBF, radio basis functions), la cual fue utilizada por la estabilidad que presenta al momento de solucionar el problema numericamente. Para hacer la comparacion se uso la solucion analitica dada por Kirsch y la solucion numerica desarrollada en el presente trabajo, obtenido un error del 0.00899% lo que muestra que la tecnica Mfree con bases radiales de interpolacion MQ son precisas y confiables al momento de ser utilizadas como metodo numerico de analisis. EnglishThe problem of Kirsch published in 1898, is used as a basis for corroborating the relative precision of numerical methods developed in the mechanics of solids. For this reason, the solution of this problem is used to evaluate the accuracy of the Mfree numerical method with a function of form using the radial points of interpolation, in the mesh-free numerical method. The radial points of interpolation method (RPIM) is an interpolation technique used to construct form functions with locally distributed nodes in a weak formulation that allows the representation of the problem as a system of equations. The most common type of functions are the polynomial functions or MQ radial basis functions (RBF), which was used for the stability it presents at the moment of solving the problem numerically. The most common type of functions are the polynomial functions or radial basis functions (RBF), which was used for the stability it presents at the moment of solving the problem numerically. To make the comparison we used the analytical solution given by Kirsch and the numerical solution developed in the present work, obtained an error of 0.00899%, which shows that the Mfree technique with radial bases of interpolation MQ are accurate and reliable when used as a numerical method of analysis.
1898年发表的基尔希问题被用作证实固体力学中发展的数值方法相对精度的基础。因此,在无网格数值方法中,利用径向插值点的形状函数来评估Mfree数值方法的精度。径向插值点法是一种插值技术,用于构造具有局部分布节点的形状函数,其松散公式允许将问题表示为一个方程组。最常见的函数类型是多项式函数或径向基函数MQ (RBF),它被用于数值求解问题时的稳定性。要comparacion使用这个解决方案analitica基尔希和开发的解决方案numerica在本工作中,取得了0.00899%错误显示技能Mfree比如说interpolacion MQ基础是准确和可靠时被用作方法numerico分析。EnglishThe problem of Kirsch published in 1898年,is为基础履行……公司precision意大利方法发达in the mechanics of solids。因此,用这个问题的解来评估Mfree数值方法的准确性,在无网格数值方法中使用径向插值点的形式函数。径向The points of interpolation method (RPIM) is an用来construct form职能与技术interpolation locally分布式节点in a弱关乎that allows The representation of The problem as a system of equations。The most common type of are The polynomial职能履行职务或径向MQ基础职务(斐济储备银行),which was for The stability)的代表在it at The巴拉克of solving The problem numerically。The most common type of are The polynomial职能履行职务或职能基础广播(斐济储备银行),which was for The stability)的代表在it at The巴拉克of solving The problem numerically。为了进行比较,我们使用了Kirsch给出的解析解和本工作中开发的数值解,得到了0.00899%的误差,这表明带有径向插补基MQ的Mfree技术作为数值分析方法是准确可靠的。