维普中文期刊产品整合服务
325篇 您的检索式:作者名="Cheung O"
    题名 作者 年代 出处 被引量
1Effective simulation of flexible lateral boundaries in two-and three-dimensional DEM simulations显示文摘Discrete element method (DEM) models to simulate laboratory element tests play an important role in advancing our understanding of the mechanics of granular material response, including bonded or cemented, particulate materials. Comparisons of the macro-scale response observed in a real physical test and a 'virtual' DEM-simulated test can calibrate or validate DEM models. The detailed, particle scale information provided in the DEM simulation can then be used to develop our understanding of the material behaviour. It is important to accurately model the physical test boundary conditions in these DEM simulations. This paper specifically considers triaxial tests as these tests are commonly used in soil mechanics. In a triaxial test, the test specimen of granular material is enclosed within a flexible latex membrane that allows the material to deform freely during testing, while maintaining a specified stress condition. Triaxial tests can only be realistically simulated in 3D DEM codes, however analogue, 2D, biaxial DEM simulations are also often considered as it is easier to visualize particle interactions in two dimensions. This paper describes algorithms to simulate the lateral boundary conditions imposed by the latex membrane used in physical triaxial tests in both 2D and 3D DEM simulations. The importance of carefully considering the lateral boundary conditions in DEM simulations is illustrated by considering a 2D biaxial test on a specimen of frictional unbonded disks and a 3D triaxial test on a bonded (cemented) specimen of spheres. The comparisons indicate that the lateral boundary conditions have a more significant influence on the local, particle-scale response in comparison with the overall macro-scale observations.Geraldine Cheung Catherine O'Sullivan 2008Particuology2008,6,6:17
2The impact of electronic word-of-mouth显示文摘Cheung Christy M K Lee Matthew K O Rabjohn Neil 2008Internet Research2008,,3:3
3Plates and Tanks on lastic Foundations--An Application on Finite Element Method显示文摘CHEUNG Y K Zienkiewicz O C 1965International Journal of Solids and Structures1965,1,1:2
4Activation and dysregulation of theunfolded protein response in nonalcoholic fatty liver disease显示文摘Puri P Mirshahi F Cheung O 2008Gas-troenterology2008,134,2:1
5The motivations and environmental attitudes of nature-based visitors to protected areas in Hong Kong显示文摘CHEUNG L T O FOK L 2014International Journal of Sustainable Development&World Ecology2014,21,1:1
6A theoretical model of intentional social action in online social networks 显示文摘Cheung C M K Lee M K O 2010Decision Support Systems2010,49,1:1
7Nrf2 knockout enhances intestinal tumorigenesis in Apc(min/+)mice due to attenuation of anti-oxidative stress path-way while potentiates inflammation 显示文摘CHEUNG K L LEE J H KHOR T O 2014Mol Carcinog2014,53,1:1
8Recent advances in nonalcoholic fatty liver dis- ease显示文摘Cheung O Sanya] AJ 2010Curt (3pin Ctroenteml2010,,26:1
9A study of work- family enrichment among Chinese employees: The mediating role between work support and job satisfaction显示文摘Tang S W Siu O L Cheung F 2014Applied Psychology2014,63,1:1
10A large scale genetic analysis of c-Myc-regulated gene expression patterns显示文摘O' Connell BC Cheung AF Simkevich CP 2003J Biol Chem2003,278,12:1
11Recent advances in non- alcholic fatty liver disease 显示文摘Greenfield V Cheung O Sanyal A J 2008Curt Opin Gastroenterol2008,24,3:1
12H-infinity optimization of a Variant design of the dynamic vibration absorber Re visited and new results显示文摘Cheung Y L Wong W O 2011Journal of Sound and Vi- bration2011,330,:1
13Understanding the role of gender in bloggers' switching behavior显示文摘Zhang K Z K Lee M K O Cheung C M K 2009Decision Support Systems2009,47,4:1
14Nutritional evaluation of protein concentrates isolated from two red seaweeds:Hypnea charoides and Hypnea japonica in growing rats显示文摘WONG K H CHEUNG P C K ANG P O 2004Hydrobiologia2004,512,:1
15Consumer's decision to shop online: The moderating role of positiveinformational social influence显示文摘Lee M K O Shi N Cheung C M K 2011Information Management2011,48,6:1
16Plates and tanks on elastic foundation an application of finite element method显示文摘ZEINKEIWICZ O C CHEUNG Y K 1965Journal of Solids and Structures1965,,1:1
17Effect of alpha-interferon treatment in patients with hepatitis B e antigen-positive chronic hepatitis B显示文摘Wong DKH Cheung AM O'Rourke K 1993Ann Intern Med1993,119,:1
18Detection of two porcine circovirus type 2 genotypic groups in United States swine herds显示文摘Cheung A K Lager K M Kohutyuk O I 0,,05:1
19Chylous ascites post open cholecystectomy after severe pancreatitis显示文摘Cheung CX Kelly ME E1 Tayeb O 0,,03:1
20Primary duodenalcarcinoma showing divergent growth patterns as determined by microdissection-based mutational genotyping显示文摘Cheung O Kandil H Moser AJ 2003Arch Pathol Lab Med2003,127,7:1
返回顶部 每页显示:
共17页 首页 上一页 第1页 下一页 末页 /17 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费