Volume 4 Issue 3
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Lin HAN, Zi-ming ZHANG, Zhi-qiang NI. 2011: Application of SSOR-PCG method with improved iteration format in FEM simulation of massive concrete. Water Science and Engineering, 4(3): 317-328. doi: 10.3882/j.issn.1674-2370.2011.03.008
Citation: Lin HAN, Zi-ming ZHANG, Zhi-qiang NI. 2011: Application of SSOR-PCG method with improved iteration format in FEM simulation of massive concrete. Water Science and Engineering, 4(3): 317-328. doi: 10.3882/j.issn.1674-2370.2011.03.008
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Application of SSOR-PCG method with improved iteration format in FEM simulation of massive concrete

doi: 10.3882/j.issn.1674-2370.2011.03.008

  • College of Mechanics and Materials, Hohai University, Nanjing 210098, P. R. China

Funds:  This work was supported by the National Natural Science Foundation of China (Grant No. 50808066).
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  • Corresponding author: Lin HAN
  • Received Date: 2010-10-15
  • Rev Recd Date: 2011-01-17
    Abstract
  •  In this study, for the purpose of improving the efficiency and accuracy of numerical simulation of massive concrete, the symmetric successive over relaxation-preconditioned conjugate gradient method (SSOR-PCGM) with an improved iteration format was derived and applied to solution of large sparse symmetric positive definite linear equations in the computational process of the finite element analysis. A three-dimensional simulation program for massive concrete was developed based on SSOR-PCGM with an improved iteration format. Then, the programs based on the direct method and SSOR-PCGM with an improved iteration format were used for computation of the Guandi roller compacted concrete (RCC) gravity dam and an elastic cube under free expansion. The comparison and analysis of the computational results show that SSOR-PCGM with the improved iteration format occupies much less physical memory and can solve larger-scale problems with much less computing time and flexible control of accuracy.

     

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