离散元-边界元动力耦合模型
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摘要
本文提出了一种二维变形体离散元与时域边界元的耦合模型 ,这一模型可以将非连续体的模拟与无限域的模拟统一在一个模型中 ,可用于在地震波动输入条件下 ,考虑辐射阻尼的岩体边坡或地下结构等的动力稳定和变形分析 ,拓宽了离散元动力分析的领域 .算例分析表明本耦合分析模型具有较高的精度
A 2\|D dynamic model coupling the deformation block distinct element method with boundary element method in time domain is established. The model simulates the static and dynamic responses of discontinuous rock and the effects of infinite domain simultaneously. It can be used to analyze the static and dynamic stability, deformation of rocky slopes as well as the underground structures, especially when wave propagation input of earthquake and radiation damping must be taken into acciunt. The results of bench mark problems show shows that the precision of this method is high.
A 2\|D dynamic model coupling the deformation block distinct element method with boundary element method in time domain is established. The model simulates the static and dynamic responses of discontinuous rock and the effects of infinite domain simultaneously. It can be used to analyze the static and dynamic stability, deformation of rocky slopes as well as the underground structures, especially when wave propagation input of earthquake and radiation damping must be taken into acciunt. The results of bench mark problems show shows that the precision of this method is high.
引文
[ 1 ] CundallPA ,HartRD .DevelopmentofGeneralized 2 Dand 3 DDistinctElementProgramsforModellingJoint edRock [R].ITASCAConsultingGroup ,Misc.PaperSL 85 1 ,1 985.
[2 ] 鲁军 ,张楚汉 ,王光纶 ,金峰 .岩体动静力稳定分析的三维离散单元法 [J].清华大学学报 ,1 996,( 1 0 ) .
[3] ZhangChuhan ,etal.Applicationofdistinctelementmethodindynamicanalysisofhighrockslopesandblockystructures. [J]SoilDyn .Earthq.Eng. 1 997,( 1 2 ) .
[4 ] 张楚汉 .结构 -地基动力相互作用问题 [C].结构与介质相互作用理论及其应用 .南京 :河海大学出版社 ,1 993.
[5] NiwaY ,KobayashiS ,AzumaN .ApplicationofIntegralEquationMethodtoSomeGeomechanicalProblems[C].NumericalMethodinGeomechanics,1 2 0 -1 31 ,ASCE ,NewYork ,1 976
[ 6] MansurWJ,BrebbiaCA .TopicsinBoundaryElementResearch [C].Chap . 4 ,Springer VerlagWorldPub lishingCompany ,87-1 2 3,1 985.
[7] 金峰 ,张楚汉 ,王光纶 .有阻尼的时域边界元方法 [J].力学学报 ,1 997,2 9( 1 5) .
[8] 任允涛 .各向同性与各向异性介质波动问题边界元法及其工程应用 [D].北京 :清华大学 ,1 996年 .
[9] 贾伟伟 .离散元 -边界元动力耦合模型研究及其工程应用 [D].北京 :清华大学 ,1 999年
[2 ] 鲁军 ,张楚汉 ,王光纶 ,金峰 .岩体动静力稳定分析的三维离散单元法 [J].清华大学学报 ,1 996,( 1 0 ) .
[3] ZhangChuhan ,etal.Applicationofdistinctelementmethodindynamicanalysisofhighrockslopesandblockystructures. [J]SoilDyn .Earthq.Eng. 1 997,( 1 2 ) .
[4 ] 张楚汉 .结构 -地基动力相互作用问题 [C].结构与介质相互作用理论及其应用 .南京 :河海大学出版社 ,1 993.
[5] NiwaY ,KobayashiS ,AzumaN .ApplicationofIntegralEquationMethodtoSomeGeomechanicalProblems[C].NumericalMethodinGeomechanics,1 2 0 -1 31 ,ASCE ,NewYork ,1 976
[ 6] MansurWJ,BrebbiaCA .TopicsinBoundaryElementResearch [C].Chap . 4 ,Springer VerlagWorldPub lishingCompany ,87-1 2 3,1 985.
[7] 金峰 ,张楚汉 ,王光纶 .有阻尼的时域边界元方法 [J].力学学报 ,1 997,2 9( 1 5) .
[8] 任允涛 .各向同性与各向异性介质波动问题边界元法及其工程应用 [D].北京 :清华大学 ,1 996年 .
[9] 贾伟伟 .离散元 -边界元动力耦合模型研究及其工程应用 [D].北京 :清华大学 ,1 999年
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