地质力学数值模拟的不连续未来

IF 0.3 Q4 ENGINEERING, GEOLOGICAL

Geotechnical Engineering Pub Date : 2001-01-01 DOI:10.1680/GENG.2001.149.1.41

P. Cundall

{"title":"地质力学数值模拟的不连续未来","authors":"P. Cundall","doi":"10.1680/GENG.2001.149.1.41","DOIUrl":null,"url":null,"abstract":"Finite-element or finite-difference methods are commonly used in geomechanics to model the response of soil or rock at an engineering site. These methods assume that the material is a continuum (although known discontinuities can be included explicitly). There are two drawbacks with continuum methods. Firstly, an appropriate stress-strain law for the material may not exist, or the law may be excessively complicated with many obscure parameters. Secondly, the natural development of cracks and rupture surfaces is not well-handled by continuum approaches. It is suggested that the future trend for numerical modelling in soil and rock may consist of the replacement of continuum methods by particle methods. Assemblies of discrete particles (bonded together to represent rock, and unbonded to represent soil) capture the complicated behaviour of actual material with simple assumptions and few parameters at the micro level. Complex overall behaviour arises as an emergent property of the assembly. The application of...","PeriodicalId":45150,"journal":{"name":"Geotechnical Engineering","volume":"149 1","pages":"41-47"},"PeriodicalIF":0.3000,"publicationDate":"2001-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1680/GENG.2001.149.1.41","citationCount":"265","resultStr":"{\"title\":\"A DISCONTINUOUS FUTURE FOR NUMERICAL MODELLING IN GEOMECHANICS\",\"authors\":\"P. Cundall\",\"doi\":\"10.1680/GENG.2001.149.1.41\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Finite-element or finite-difference methods are commonly used in geomechanics to model the response of soil or rock at an engineering site. These methods assume that the material is a continuum (although known discontinuities can be included explicitly). There are two drawbacks with continuum methods. Firstly, an appropriate stress-strain law for the material may not exist, or the law may be excessively complicated with many obscure parameters. Secondly, the natural development of cracks and rupture surfaces is not well-handled by continuum approaches. It is suggested that the future trend for numerical modelling in soil and rock may consist of the replacement of continuum methods by particle methods. Assemblies of discrete particles (bonded together to represent rock, and unbonded to represent soil) capture the complicated behaviour of actual material with simple assumptions and few parameters at the micro level. Complex overall behaviour arises as an emergent property of the assembly. The application of...\",\"PeriodicalId\":45150,\"journal\":{\"name\":\"Geotechnical Engineering\",\"volume\":\"149 1\",\"pages\":\"41-47\"},\"PeriodicalIF\":0.3000,\"publicationDate\":\"2001-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1680/GENG.2001.149.1.41\",\"citationCount\":\"265\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Geotechnical Engineering\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1680/GENG.2001.149.1.41\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"ENGINEERING, GEOLOGICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Geotechnical Engineering","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1680/GENG.2001.149.1.41","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, GEOLOGICAL","Score":null,"Total":0}

引用次数: 265

摘要

在地质力学中，有限元或有限差分方法通常用于模拟工程场地的土壤或岩石的响应。这些方法假定材料是一个连续体(尽管已知的不连续可以明确地包括在内)。连续体方法有两个缺点。首先，材料可能不存在合适的应力-应变规律，或者该规律可能过于复杂，有许多模糊的参数。其次，连续介质方法不能很好地处理裂纹和破裂面的自然发展。认为未来岩土数值模拟的趋势可能是用颗粒法取代连续介质法。离散粒子的集合(结合在一起代表岩石，分开代表土壤)用简单的假设和很少的参数在微观层面上捕捉实际材料的复杂行为。复杂的整体行为作为程序集的紧急属性而出现。的应用……

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

A DISCONTINUOUS FUTURE FOR NUMERICAL MODELLING IN GEOMECHANICS

Finite-element or finite-difference methods are commonly used in geomechanics to model the response of soil or rock at an engineering site. These methods assume that the material is a continuum (although known discontinuities can be included explicitly). There are two drawbacks with continuum methods. Firstly, an appropriate stress-strain law for the material may not exist, or the law may be excessively complicated with many obscure parameters. Secondly, the natural development of cracks and rupture surfaces is not well-handled by continuum approaches. It is suggested that the future trend for numerical modelling in soil and rock may consist of the replacement of continuum methods by particle methods. Assemblies of discrete particles (bonded together to represent rock, and unbonded to represent soil) capture the complicated behaviour of actual material with simple assumptions and few parameters at the micro level. Complex overall behaviour arises as an emergent property of the assembly. The application of...

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Geotechnical Engineering ENGINEERING, GEOLOGICAL-

CiteScore

0.50

自引率

0.00%

发文量

期刊介绍： The objectives of the Association shall be the promotion of co-operation among geotechnical societies in SE Asia; and the assistance to member societies who have limited number of members. Now there is only one combined web titled: AGSSEA-SEAGS. SEAGS & AGSSEA encourage the submission of scholarly and practice-oriented articles to its journal. The journal is published quarterly. Both sponsors of the journal, the Southeast Asian Geotechnical Society and the Association of Geotechnical Societies in Southeast Asia, promote the ideals and goals of the International Society of Soil Mechanics and Geotechhnical Engineering in fostering communications, developing insights and enabling the advancement of the geotechnical engineering discipline.