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p‐version of the generalized FEM using mesh‐based handbooks with applications to multiscale problems
Theofanis Strouboulis Lin Zhang Ivo Babuka 《International journal for numerical methods in engineering》2004,60(10):1639-1672
In this paper, we analyse the p‐convergence of a new version of the generalized finite element method (generalized FEM or GFEM) which employs mesh‐based handbook functions which are solutions of boundary value problems in domains extracted from vertex patches of the employed mesh and are pasted into the global approximation by the partition of unity method (PUM). We show that the p‐version of our GFEM is capable of achieving very high accuracy for multiscale problems which may be impossible to solve using the standard FEM. We analyse the effect of the main factors affecting the accuracy of the method namely: (a) The data and the buffer included in the handbook domains, and (b) The accuracy of the numerical construction of the handbook functions. We illustrate the robustness of the method by employing as model problem the Laplacian in a domain with a large number of closely spaced voids. Similar robustness can be expected for problems of heat‐conduction and elasticity set in domains with a large number of closely spaced voids, cracks, inclusions, etc. Copyright © 2004 John Wiley & Sons, Ltd. 相似文献
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对于无实测流量资料的中小流域,常常借助本流域及邻近流域雨量站的资料,通过暴雨途径计算设计洪水。《贵州省暴雨洪水计算实用手册》及《贵州省暴雨洪水计算实用手册(修订本)》是目前贵州省中小流域无资料地区设计洪水计算的基本方法之一。文章阐述了《手册》的计算原理及其应用,并根据多年实践经验,针对软件应用中的一些问题提出处理意见。 相似文献
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李盛 《电子产品可靠性与环境试验》2008,26(1):60-67
对TL 9000标准要求部分3.0版与4.0版之间的变化情况进行了归纳,并对变化的部分进行了解释,既有助于企业正确使用新版标准,同时也有利于使用人员了解新标准的内容. 相似文献
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This annual publication (2003) updates readers about the major classes of psychotropic medications. It reviews some 14 groups of interventions: antidepressants, electroconvulsive therapy, antipsychotics (neuroleptics), antiparkinsonian agents, anxiolytic agents, hypnotics/sedatives, mood stabilizers, psychostimulants, cognition enhancers, sex-drive depressants, drugs of abuse, treatment of substance use disorders, new unapproved treatment of psychiatric disorders, and herbal and natural products. Following the body of the text, there appears a Glossary, Suggested Readings, an Index of Drugs, and some helpful Patient Information Sheets. Psychotherapists will find this a useful, and state-of-the-art text. Although the information provided can be obtained through a wide range of competing sources, it is the organization, formulation, and patient information features that make this text relatively unique. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
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在此针对企业党建工作的需求,运用B/S结构设计了电子党员手册系统,拟搭建企业党建工作信息平台,实现企业党建工作资料从纸质向电子的转化。论述了电子手册的具体功能和详细的设计思路,并对系统自动生成电子手册的核心代码进行了解析。系统的成功运行,促进了企业党建工作的信息化和规范化,提高了工作效率,为企业的党建工作管理提供了科学依据。 相似文献