摘要
提出了计算渗流场流量的虚拟单元法,推导了虚拟单元法有限元方程,并探讨了虚拟单元法的有限元实现方法,建立了虚拟单元法求解渗流流量的理论和方法体系。二维径向渗流和平底坝基算例比较分析表明,虚拟单元法具有计算精度高及有限元实现简单并容易编写通用程序等优点。虚拟单元法与中线法计算流量具有相同的精度,但在应用上虚拟单元法有一定优势。
Virtual element method is put forward for seepage discharge calculation. The equations of finite element method about virtual element are derived; and then the finite element method disposal techniques are discussed; so that the theoretical system and application method can be well established. Based on the analysis of calculation examples of centripetal seepage problem and flat-bottomed dam foundation seepage, it is shown that the discharge calculation with virtual element method will get a high precision. Virtual element method is endowed with unique superiority in the aspects of finite element method application.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2009年第1期27-32,共6页
Rock and Soil Mechanics
基金
中国-奥地利科技合作项目(No.CN01/2007)
国家重点基础研究发展计划资助项目(No.2007CB714102)。
关键词
渗流
流量计算
虚拟单元法
中线法
seepage
discharge calculation
virtual element method
midline method
