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Mathematical analysis and simulation of fixed point formulation of Cauchy problem in linear elasticity

Author

Listed:
  • Ellabib, Abdellatif
  • Nachaoui, Abdeljalil
  • Ousaadane, Abdessamad

Abstract

In this work, an inverse problem in linear elasticity is considered, it is about reconstructing the unknown boundary conditions on a part of the boundary based on the other boundaries. A methodology based on the domain decomposition operating mode is opted by constructing a Steklov–Poincaré kind’s operator. This allows us to reformulate our inverse problem into a fixed point one involving a Steklov kind’s operator, the existence of the fixed point problem is shown using the topological degree of Leray–Schauder. The proposed approach offers the opportunity to exploit domain decomposition methods for solving this inverse problem. Finally, a numerical study of this problem using the boundary element method is presented. The obtained numerical results show the efficiency of the proposed approach.

Suggested Citation

  • Ellabib, Abdellatif & Nachaoui, Abdeljalil & Ousaadane, Abdessamad, 2021. "Mathematical analysis and simulation of fixed point formulation of Cauchy problem in linear elasticity," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 187(C), pages 231-247.
    • Handle: RePEc:eee:matcom:v:187:y:2021:i:c:p:231-247
    DOI: 10.1016/j.matcom.2021.02.020
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    References listed on IDEAS

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    1. Ellabib, A. & Nachaoui, A., 2008. "An iterative approach to the solution of an inverse problem in linear elasticity," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 77(2), pages 189-201.
    2. Bergam, A. & Chakib, A. & Nachaoui, A. & Nachaoui, M., 2019. "Adaptive mesh techniques based on a posteriori error estimates for an inverse Cauchy problem," Applied Mathematics and Computation, Elsevier, vol. 346(C), pages 865-878.
    3. Xiong, Xiangtuan & Cao, Xiaoxiao & He, Shumei & Wen, Jin, 2016. "A modified regularization method for a Cauchy problem for heat equation on a two-layer sphere domain," Applied Mathematics and Computation, Elsevier, vol. 290(C), pages 240-249.
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