波动数值模拟中人工透射边界的实现技术
|
摘要
对局部场地动力反应的有限元方法及其边界问题的处理技术进行了研究,基于ABAQUS有限元软件开发了用于局部场地反应数值模拟的人工透射边界的子程序,通过对均匀半空间的波动问题的分析,验证了局部场地动力反应分析模型和边界处理技术的可行性。算例结果表明,基于ABAQUS有限元软件建立的地震波输入方式和透射边界的用户子程序对于局部场地动力反应分析具有良好的适用性。所提方法可用于二维局部不规则、不均匀和非线性场地的地震波散射问题。
Numerical simulation of local site dynamic response was studied by finite element method considering on transmitting artificial boundary condition in this paper.A new program used for seismic response of two-dimension local uneven field is developed based on ABAQUS finite-element software.Wave motion problem of homogeneous half space was analyzed.It proves that the analysis model and boundary processing used in local site dynamic response developed in this paper are feasible.The user subroutine for transmitting boundary condition is excellent to solve the dynamic response by the simulation of the infinite field effect.The numerical examples show that the incident style of earthquake waves and the subroutine of transmitting boundary condition based on ABAQUS can be efficiently applied to local site dynamic analysis.The method can be applied to scattering of earthquake waves of 2-D irregular,uneven and nonlinear local site.
Numerical simulation of local site dynamic response was studied by finite element method considering on transmitting artificial boundary condition in this paper.A new program used for seismic response of two-dimension local uneven field is developed based on ABAQUS finite-element software.Wave motion problem of homogeneous half space was analyzed.It proves that the analysis model and boundary processing used in local site dynamic response developed in this paper are feasible.The user subroutine for transmitting boundary condition is excellent to solve the dynamic response by the simulation of the infinite field effect.The numerical examples show that the incident style of earthquake waves and the subroutine of transmitting boundary condition based on ABAQUS can be efficiently applied to local site dynamic analysis.The method can be applied to scattering of earthquake waves of 2-D irregular,uneven and nonlinear local site.
引文
[1]Alterman Z S,F C Jr Karal.Propagation of Elastic Waves in Layered Media by Finite Difference Methods[J].Bulletin of the Seismological Soci-ety of America,1968,58:367-398.
[2]廖振鹏.近场波动的有限元模拟[J].地震工程与工程振动,1984,4(2):1-14.
[3]廖振鹏.工程波动理论导论(第二版)[M].北京:地震出版社,2002.
[4]Givoli D.Numerical Methods for Problems in Infinite Domains[M].Elservier,Ametserdam,1992.
[5]廖振鹏,周正华,张艳红.波动数值模拟中透射边界的稳定实现[J].地球物理学报,2002,45(4):533-545.
[6]庄茁.ABAQUS非线性有限元分析与实例[M].北京:科学出版社,2005.
[7]ABAQUS Inc.ABAQUS User Subroutines Reference Manual[R].2008.
[8]Wolf J P.Dynamic Soil-Structure Interaction[M].Englewood Cliffs:Prentice-Hall,1985.
[2]廖振鹏.近场波动的有限元模拟[J].地震工程与工程振动,1984,4(2):1-14.
[3]廖振鹏.工程波动理论导论(第二版)[M].北京:地震出版社,2002.
[4]Givoli D.Numerical Methods for Problems in Infinite Domains[M].Elservier,Ametserdam,1992.
[5]廖振鹏,周正华,张艳红.波动数值模拟中透射边界的稳定实现[J].地球物理学报,2002,45(4):533-545.
[6]庄茁.ABAQUS非线性有限元分析与实例[M].北京:科学出版社,2005.
[7]ABAQUS Inc.ABAQUS User Subroutines Reference Manual[R].2008.
[8]Wolf J P.Dynamic Soil-Structure Interaction[M].Englewood Cliffs:Prentice-Hall,1985.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心