Applied Mathematics and Mechanics (English Edition) ›› 2016, Vol. 37 ›› Issue (2): 151-168.doi: https://doi.org/10.1007/s10483-016-2041-9

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Quasi-optimal complexity of adaptive finite element method for linear elasticity problems in two dimensions

Chunmei LIU1, Liuqiang ZHONG2, Shi SHU3, Yingxiong XIAO4   

  1. 1. Institute for Computational Mathematics, College of Science, Hunan University of Science and Engineering, Yongzhou 425199, Hunan Province, China;
    2. School of Mathematical Sciences, South China Normal University, Guangzhou 510631, China;
    3. School of Mathematics and Computational Science, Xiangtan University, Xiangtan 411105, Hunan Province, China;
    4. College of Civil Engineering and Mechanics, Xiangtan University, Xiangtan 411105, Hunan Province, China
  • 收稿日期:2015-06-26 修回日期:2015-09-14 出版日期:2016-02-01 发布日期:2016-02-01
  • 通讯作者: Shi SHU E-mail:shushi@xtu.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Nos. 11201159, 11426102, and 11571293), the Natural Science Foundation of Hunan Province (No. 11JJ3135), the Foundation for Outstanding Young Teachers in Higher Education of Guangdong Province (No.Yq2013054), the Pearl River S&T Nova Program of Guangzhou (No. 2013J2200063), and the Construct Program of the Key Discipline in Hunan University of Science and Engineering

Quasi-optimal complexity of adaptive finite element method for linear elasticity problems in two dimensions

Chunmei LIU1, Liuqiang ZHONG2, Shi SHU3, Yingxiong XIAO4   

  1. 1. Institute for Computational Mathematics, College of Science, Hunan University of Science and Engineering, Yongzhou 425199, Hunan Province, China;
    2. School of Mathematical Sciences, South China Normal University, Guangzhou 510631, China;
    3. School of Mathematics and Computational Science, Xiangtan University, Xiangtan 411105, Hunan Province, China;
    4. College of Civil Engineering and Mechanics, Xiangtan University, Xiangtan 411105, Hunan Province, China
  • Received:2015-06-26 Revised:2015-09-14 Online:2016-02-01 Published:2016-02-01
  • Contact: Shi SHU E-mail:shushi@xtu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Nos. 11201159, 11426102, and 11571293), the Natural Science Foundation of Hunan Province (No. 11JJ3135), the Foundation for Outstanding Young Teachers in Higher Education of Guangdong Province (No.Yq2013054), the Pearl River S&T Nova Program of Guangzhou (No. 2013J2200063), and the Construct Program of the Key Discipline in Hunan University of Science and Engineering

摘要:

This paper introduces an adaptive finite element method (AFEM) using the newest vertex bisection and marking exclusively according to the error estimator without special treatment of oscillation. By the combination of the global lower bound and the localized upper bound of the posteriori error estimator, perturbation of oscillation, and cardinality of the marked element set, it is proved that the AFEM is quasi-optimal for linear elasticity problems in two dimensions, and this conclusion is verified by the numerical examples.

关键词: adaptive finite element method (AFEM), linear elasticity problem, quasioptimal complexity

Abstract:

This paper introduces an adaptive finite element method (AFEM) using the newest vertex bisection and marking exclusively according to the error estimator without special treatment of oscillation. By the combination of the global lower bound and the localized upper bound of the posteriori error estimator, perturbation of oscillation, and cardinality of the marked element set, it is proved that the AFEM is quasi-optimal for linear elasticity problems in two dimensions, and this conclusion is verified by the numerical examples.

Key words: linear elasticity problem, adaptive finite element method (AFEM), quasioptimal complexity

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