Computing Systems in Engineering最新文献_第5页

Performance of a finite volume CEM code on multicomputers 有限体积CEM代码在多台计算机上的性能

Computing Systems in Engineering Pub Date : 1995-06-01 DOI: 10.1016/0956-0521(95)00015-R

J.S. Shang , D.A. Calahan , B. Vikstrom

引用次数: 18

Recent advances in the p-version of the finite element method for shells 壳有限元法p-版本的最新进展

Computing Systems in Engineering Pub Date : 1995-06-01 DOI: 10.1016/0956-0521(95)00018-U

Jacob Fish, Ravi Guttal

引用次数: 8

Large-scale crystal plasticity computations of microstructural failure modes 微观结构破坏模式的大尺度晶体塑性计算

Computing Systems in Engineering Pub Date : 1995-06-01 DOI: 10.1016/0956-0521(95)00024-T

M.A. Zikry, M. Kao

{"title":"Large-scale crystal plasticity computations of microstructural failure modes","authors":"M.A. Zikry, M. Kao","doi":"10.1016/0956-0521(95)00024-T","DOIUrl":"10.1016/0956-0521(95)00024-T","url":null,"abstract":"<div><p>A computational scheme is introduced for the integration of rate-dependent multiple-slip crystal plasticity constitutive relations. Fundamental issues of accuracy, stability, and stiffness that are intrinsically related to the evolution of microstructural failure modes in metallic crystals are addressed. An adaptive finite-element methodology is introduced to classify these characteristics. A nonlinear initial value system is derived to update the plastic deformation-rate tensor. An explicit method is used in non-stiff domains, where accuracy is required. If a time-step reduction is due to stability, a harbinger of numerical stiffness, the algorithm is automatically switched to an A-stable method. A stiffness ratio is defined to measure the eigenvalue dispersion of the system. The adaptability of the proposed algorithm for the solution of a class of inelastic constitutive relations is illustrated by investigating the influence of high angle grain boundary orientations on failure in face-centered cubic (f.c.c.) bicrystals. The effects of grain boundary misorientation, dislocation densities, strain hardening, and geometrical softening on failure evolution are investigated. This study underscores the importance of understanding the origin of numerical instabilities, such that these instabilities are not mistaken for inherent material instabilities.</p></div>","PeriodicalId":100325,"journal":{"name":"Computing Systems in Engineering","volume":"6 3","pages":"Pages 225-240"},"PeriodicalIF":0.0,"publicationDate":"1995-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0956-0521(95)00024-T","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78701457","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: 17

An intelligent simulation approach to cost-time forecasting for housing modernization works 住宅现代化工程成本-时间预测的智能仿真方法

Computing Systems in Engineering Pub Date : 1995-04-01 DOI: 10.1016/0956-0521(95)00010-W

A. Retik , V.K. Marston

引用次数: 2

A mapping algorithm for domain decomposition in massively parallel finite element analysis 大规模并行有限元分析中区域分解的映射算法

Computing Systems in Engineering Pub Date : 1995-04-01 DOI: 10.1016/0956-0521(95)00013-P

Sanjeev Gupta , Martin R. Ramirez

{"title":"A mapping algorithm for domain decomposition in massively parallel finite element analysis","authors":"Sanjeev Gupta , Martin R. Ramirez","doi":"10.1016/0956-0521(95)00013-P","DOIUrl":"10.1016/0956-0521(95)00013-P","url":null,"abstract":"<div><p>A new mapping algorithm is presented for domain decomposition for the purpose of allowing researchers to conduct finite element analysis on massively parallel computers. Over the last few years, massively parallel MIMD machines such as the Intel Touchstone Delta and recently the Intel Touchstone Paragon have become increasingly popular for speeding up finite element computations. Most of these applications use domain decomposition as a first step towards conquering the problem. Many different algorithms have been developed by researchers to achieve an effective domain decomposition. Some of these methods use connectivity information only, some use coordinate information only, while others use both of them together. Some algorithms are based on assigning weights to nodes using a particular strategy while others are recursive in nature. As will be discussed in this paper, the logic employed in various algorithms works perfectly well for certain meshes to be decomposed, in certain numbers of subdomains; while it gives far from perfect results for other meshes or for same meshes to be decomposed in a different number of subdomains. The logic used in the proposed algorithm has been developed in a creative way such that it is closer to a human's natural thinking when making decisions. Fairly large meshes can be decomposed in a matter of seconds on a Sun Sparc station by the proposed algorithm. Its execution time remains almost the same for any number of subdomains.</p></div>","PeriodicalId":100325,"journal":{"name":"Computing Systems in Engineering","volume":"6 2","pages":"Pages 111-150"},"PeriodicalIF":0.0,"publicationDate":"1995-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0956-0521(95)00013-P","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74099826","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

Problem decomposition for adaptive hp finite element methods 自适应hp有限元方法的问题分解

Computing Systems in Engineering Pub Date : 1995-04-01 DOI: 10.1016/0956-0521(95)00008-N

Abani Patra, J.Tinsley Oden

引用次数: 101

Modeling with collaborating PDE solvers—Theory and practice 使用协作PDE求解器建模-理论与实践

Computing Systems in Engineering Pub Date : 1995-04-01 DOI: 10.1016/0956-0521(95)00005-K

Mo Mu , John R. Rice

引用次数: 44

Design Sensitivity Analysis and Optimization tool (DSO) for shape design applications 设计灵敏度分析和优化工具(DSO)的形状设计应用

Computing Systems in Engineering Pub Date : 1995-04-01 DOI: 10.1016/0956-0521(95)00006-L

Kuang-Hua Chang, Kyung K. Choi, Chung-Shin Tsai, Chin-Jung Chen, Brian S. Choi, Xiaoming Yu

引用次数: 49

Quasi-analytical shape prediction for direct-iterative inverse design 直接迭代反设计的准解析形状预测

Computing Systems in Engineering Pub Date : 1995-04-01 DOI: 10.1016/0956-0521(95)00014-Q

Jerry S. Brock, Wing F. Ng

引用次数: 1

Free vibration analysis and shape optimization of variable thickness plates and shells—II. Sensitivity analysis and shape optimization 变厚板壳自由振动分析及形状优化[j]。灵敏度分析和形状优化

Computing Systems in Engineering Pub Date : 1995-02-01 DOI: 10.1016/0956-0521(95)00012-O

S.M.B. Afonso, E. Hinton

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引用次数: 24