,THE HP-VERSION OF BEM-FAST CONVERGENCE, ADAPTIVITY AND EFFICIENT PRECONDITIONING

来源 :计算数学(英文版) | 被引量 : 0次 | 上传用户:hacker888888
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
In this survey paper we report on recent developments of the hp-version of the boundary element method(BEM).As model problems we consider weakly singular and hypersingular integral equations of the first kind on a planar,open surface.We show that the Galerkin solutions (computed with the hp-version on geometric meshes) converge exponentially fast towards the exact solutions of the integral equations.An hp-adaptive algorithm is given and the implementation of the hp-version BEM is discussed together with the choice of efficient preconditioners for the ill-conditioned boundary element stiffness matrices.We also comment on the use of the hp-version BEM for solving Signorini contact problems in linear elasticity where the contact conditions are enforced only on the discrete set of Gauss-Lobatto points.Numerical results are presented which underline the theoretical results.
其他文献
成功的课堂教学离不开巧妙地设疑.那么,如何设疑才能既精当而又有深度?总的来说,主要取决于教师对教材的把握高度和深度.教者要熟悉文章的思路和布局,对教材的重难点、关键处
In this work, we propose an efficient numerical method for computing the electrostatic interaction between two like-charged spherical particles which is goveed
A new mixed Legendre-Hermite interpolation is introduced. Some approximation results are established. Mixed Legendre-Hermite pseudospectral method is proposed f
一、传统蒙学重视蒙童的人格养成教育rn我国的蒙学教育,非常重视对蒙童的人格养成教育.“蒙以养正,圣功也.”这句出自的名言,被移用到蒙学教育上,意思是,蒙童时代应培养纯正
In this paper, we consider lower order rectangular finite element methods for the singularly perturbed Stokes problem. The model problem reduces to a linear Sto
背诵是传统蒙学教学中最常用、最悠久的教学方法,可是这一传统现在几乎被完全抛弃了,语文教学改革与继承并不矛盾,今天继承传统蒙学教学中优良的教学方法还是非常必要的.
被称为“中国当代少年诺贝尔奖”的“全球华人少年美文写作征文大赛”,连续两届金奖空缺.著名作家贾平凹在扬州决赛评卷现场直言:“强调让学生说自己的话,不限主题,不限文体,
“只有在实验室中才能够诞生物理学家”,这句话道出了实验在物理学中的重要地位.实验是物理学的基础,在初中物理课堂上,实验更是能够培养学生思维能力和动手实践能力的重要手
大豆是高蛋白质、高脂肪和高效益的经济作物。近年来其生产发展极为迅速。种植区逐渐向高寒山区延伸和扩展,为了搞好高寒山区大豆生产,首先应抓好高寒山区大豆品种的开发和
In this paper,we will prove the derivative of tetrahedral quadratic finite element approximation is superapproximate to the derivative of the quadratic Lagrange