Numerical analysis on failure behaviour of polyurethane polymer concrete at high strain rates in compression | |
Ai, Shigang ; Tang, Liqun ; Mao, Yiqi ; Liu, Yiping ; Fang, Daining | |
刊名 | computational materials science |
2013 | |
关键词 | Polyurethane polymer concrete High strain rate Numerical simulation Mesoscale model Interface failure STRENGTH ENHANCEMENT DYNAMIC BEHAVIOR MODEL PRESSURES AGGREGATE DAMAGE |
DOI | 10.1016/j.commatsci.2012.12.018 |
英文摘要 | Experimental investigation on dynamic compressive behaviour of polyurethane polymer concrete (PPC) by a Split Hopkinson Bar (SHPB) system showed that the dynamic compressive strength of PPC material increased firstly and then decreased with the increment of strain rates. In order to demonstrate the novel dynamic compressive behaviour of the PPC material, a 2D FE mode of a SHPB system is developed, the heterogeneous mesoscale model of the PPC specimen included. In the mesoscale model, the PPC sample is modelled as a three-phase composite consisting of aggregate, polyurethane polymer matrix and the aggregate/matrix interface. The aggregate is modelled as arbitrary polygon with irregular shape. The interface is assumed as a thin boundary layer around the aggregate with given geometry and mechanical properties. Numerical simulations of the PPC specimens in compression under different strain rates are performed by an explicit numerical approach based on LS-DYNA codes. Failure factures of PPC material in mesoscale level are analyzed numerically. It is found that the novel dynamic behaviour of the new composite attribute to the damage and failure features of the interface and the elastic-plastic properties of the polyurethane polymer matrix. (C) 2012 Elsevier B.V. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000314933900050&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Materials Science, Multidisciplinary; SCI(E); EI; 1; ARTICLE; 389-395; 69 |
语种 | 英语 |
内容类型 | 期刊论文 |
源URL | [http://ir.pku.edu.cn/handle/20.500.11897/154507] |
专题 | 工学院 |
推荐引用方式 GB/T 7714 | Ai, Shigang,Tang, Liqun,Mao, Yiqi,et al. Numerical analysis on failure behaviour of polyurethane polymer concrete at high strain rates in compression[J]. computational materials science,2013. |
APA | Ai, Shigang,Tang, Liqun,Mao, Yiqi,Liu, Yiping,&Fang, Daining.(2013).Numerical analysis on failure behaviour of polyurethane polymer concrete at high strain rates in compression.computational materials science. |
MLA | Ai, Shigang,et al."Numerical analysis on failure behaviour of polyurethane polymer concrete at high strain rates in compression".computational materials science (2013). |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论