| 地铁地下结构抗震分析并行计算显式与隐式算法比较 |
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| 引用本文： | 陈国兴,陈磊,景立平,龙慧.地铁地下结构抗震分析并行计算显式与隐式算法比较[J].铁道学报,2011(11):111-118. |
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| 作者姓名： | 陈国兴 陈磊 景立平 龙慧 |
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| 作者单位： | 南京工业大学岩土工程研究所;中国地震局工程力学研究所; |
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| 基金项目： | 国家自然科学基金(90715018); 国家公益性行业(地震)科研专项(200808022); 江苏省高校自然科学重大基础研究项目(08KJA560001) |
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| 摘 要： | 基于EM64T硬件构架、双路Intel Xeon处理器、Linux操作系统、64位ABAQUS软件、千兆以太网络为集群子网络构建的32CPU并行计算集群平台,对有限元并行计算中心差分显式算法与Hilber-Hughes-Taylor隐式算法的计算精度和效率以及ABAQUS软件中设置黏弹性人工边界计算精度进行比较验证。结果表明:显式与隐式算法计算精度基本相当,但显式算法计算效率远高于隐式算法。对地铁地下结构三维和二维非线性地震反应分析有限元并行计算显式和隐式算法进行对比研究,结果表明:对于自由度数为387 426的地铁车站结构三维非线性地震反应分析,8、16、32CPU并行计算显式和隐式算法耗时比依次为21.89%、23.10%、4.32%;对于自由度数为10 516的地铁车站结构二维非线性地震反应分析,1、2、4CPU并行计算隐式和显式算法计算耗时比依次为41.4%、45.3%、51.8%;多CPU并行计算显式算法适合求解大规模数值计算问题,多CPU并行计算隐式算法适合求解小规模数值计算问题。
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| 关 键 词： | 地铁地下结构 动力非线性 并行计算 显式算法 隐式算法 |
Comparison of Implicit and Explicit Finite Element Methods with Parallel Computing for Seismic Response Analysis of Metro Underground Structures |
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| CHEN Guo-xing,CHEN Lei,JING Li-pin,LONG Hui.Comparison of Implicit and Explicit Finite Element Methods with Parallel Computing for Seismic Response Analysis of Metro Underground Structures[J].Journal of the China railway Society,2011(11):111-118. |
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| Authors: | CHEN Guo-xing CHEN Lei JING Li-pin LONG Hui |
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| Institution: | CHEN Guo-xing1,CHEN Lei1,JING Li-pin2,LONG Hui1(1.Institute of Geotechnical Engineering,Nanjing University of Technology,Nanjing 210009,China,2.Institute of Engineering Mechanics,China Earthquake Administration,Harbin 150080,China) |
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| Abstract: | The computing platform is based on the EM64T hardware framework,dual-path Intel Xeon processor,and Gigabit Ethernet subsystem which contains 32 CPUs and configures 64-bit ABAQUS applications and Linux operating system.The calculation precisions and efficiency of the explicit finite element method which uses the central difference method and the implicit finite element method which uses the Hilber-Hughes-Taylor method are verified,the precisions with the viscous-spring artificial boundaries are verified simu... |
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| Keywords: | metro underground structures nonlinear dynamics parallel computing explicit finite element method implicit finite element method |
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