Exploring the contact types within mixtures of different shapes at the steady state by DEM.pdfVIP

下载本文档

4
0
约4.08万字
约 9页
2017-03-16 发布于天津
举报
版权申诉

Exploring the contact types within mixtures of different shapes at the steady state by DEM.pdf

1、有哪些信誉好的足球投注网站（book118）网站文档一经付费（服务费），不意味着购买了该文档的版权，仅供个人/单位学习、研究之用，不得用于商业用途，未经授权，严禁复制、发行、汇编、翻译或者网络传播等，侵权必究。。
2、本站所有内容均由合作方或网友上传，本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺！文档内容仅供研究参考，付费前请自行鉴别。如您付费，意味着您自己接受本站规则且自行承担风险，本站不退款、不进行额外附加服务；查看《如何避免下载的几个坑》。如果您已付费下载过本站文档，您可以点击这里二次下载。
3、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等，请点击“版权申诉”（推荐），也可以打举报电话：400-050-0827(电话支持时间：9:00-18:30)。
4、该文档为VIP文档，如果想要下载，成为VIP会员后，下载免费。
5、成为VIP后，下载本文档将扣除1次下载权益。下载后，不支持退款、换文档。如有疑问请联系我们。
6、成为VIP后，您将拥有八大权益，权益包括：VIP文档下载权益、阅读免打扰、文档格式转换、高级专利检索、专属身份标志、高级客服、多端互通、版权登记。
7、VIP文档为合作方或网友上传，每下载1次，网站将根据用户上传文档的质量评分、类型等，对文档贡献者给予高额补贴、流量扶持。如果你也想贡献VIP文档。上传文档

Exploring the contact types within mixtures of different shapes at the steady state by DEM.pdf

Powder Technology 301 (2016) 440–448 Contents lists available at ScienceDirect Powder Technology journal homepage: /locate/powtec Exploring the contact types within mixtures of different shapes at the steady state by DEM Y. Yang a,b,?, Y.M. Cheng c, J.A. Wang d a Department of Civil Engineering, Chu Hai College of Higher Education, Hong Kong, China b State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xu Zhou, China c Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China d School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing, China article info Article history: Received 8 March 2016 Received in revised form 23 May 2016 Accepted 9 June 2016 Available online 18 June 2016 Keywords: Granular materials Contact types Shape mixtures Discrete element method abstract A series of numerical tests on the quasi-static deformation of dense granular media by the discrete element method (DEM) are performed to investigate the behaviour of mixtures of shapes that are composed of round and nonconvex (elongate) particles. Four representative contact types, which are classi?ed into circle-circle contacts (CC), circle-elongate contacts (CE), simple elongate-elongate contacts (EE1) and multiple elongate-elongate contacts (EEm), are studied with respect to the macroscopic granular mechanical responses. It is found that the contact force ratio (K) of these four contacts can be considered to explain the variation of the steady friction angle. Another interesting ?nding is that the probability density function (PDF) of friction mobilisation (Im) for the CE contacts is insensitive at the mixture of 30%–60% elongated particles. However, the PDF curves of the normalised contact forces of EE1 and EEm show a nearly linear increasing relationship with the increased percentage of Elongated particles. It should be point out that th