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论文类型：期刊论文

发表时间：2013-11-01

发表刊物：COMPUTATIONAL MATERIALS SCIENCE

收录刊物：SCIE、EI

卷号：79

页面范围：159-173

ISSN号：0927-0256

关键字：Multiscale computational method; Dynamic analysis; Numerical base functions; Heterogeneous materials

摘要：In this paper, a uniform multiscale method is developed for 3D static and dynamic analyses of heterogeneous materials based on our previous work (H. W. Zhang, H. Liu, J.K. Wu, International Journal for Numerical Methods in Engineering 93 (2013) 714-746). A new 3D multi-node coarse element is provided to simulate the complex deformation and the approach is elaborated to construct the displacement base functions numerically. For the dynamic problems, to consider the effect of the interior forces of the structure, the mode base functions are introduced for improving the computational accuracy. In addition, the orthogonality between the displacement and mode base functions indicates that this proposed multiscale method can be used for the static and dynamic analyses uniformly. Finally, several typical numerical examples are carried out to verify the validity and high efficiency of this multiscale method by comparison with the reference solutions. (C) 2013 Elsevier B. V. All rights reserved.