Coupled systems mechanics

  • 제8권2호
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  • Pages.111-127
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  • 2019
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  • 2234-2184(pISSN)
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  • 2234-2192(eISSN)
테크노프레스 (Techno-Press)
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ED-FEM multi-scale computation procedure for localized failure

  • Rukavina, Ivan (Universite de Technologie de Compiegne / Sorbonne Universites, Laboratoire Roberval, Centre de Recherche Royallieu) ;
  • Ibrahimbegovic, Adnan (Universite de Technologie de Compiegne / Sorbonne Universites, Laboratoire Roberval, Centre de Recherche Royallieu) ;
  • Do, Xuan Nam (Universite de Technologie de Compiegne / Sorbonne Universites, Laboratoire Roberval, Centre de Recherche Royallieu) ;
  • Markovic, Damijan (EDF, DIPNN / Direction Technique)
  • 투고 : 2019.02.23
  • 심사 : 2019.03.21
  • 발행 : 2019.04.25
⟨ 이전 논문 다음 논문 ⟩

초록

In this paper, we present a 2D multi-scale coupling computation procedure for localized failure. When modeling the behavior of a structure by a multi-scale method, the macro-scale is used to describe the homogenized response of the structure, and the micro-scale to describe the details of the behavior on the smaller scale of the material where some inelastic mechanisms, like damage or plasticity, can be defined. The micro-scale mesh is defined for each multi-scale element in a way to fit entirely inside it. The two scales are coupled by imposing the constraint on the displacement field over their interface. An embedded discontinuity is implemented in the macro-scale element to capture the softening behavior happening on the micro-scale. The computation is performed using the operator split solution procedure on both scales.

키워드

참고문헌

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  7. Ibrahimbegovic, A. and Markovic, D. (2003), "Strong coupling methods in multi-phase and multi-scale modeling of inelastic behavior of heterogeneous structures", Comput. Meth. Appl. Mech. Eng., 192(28-30), 3089-3107. https://doi.org/10.1016/S0045-7825(03)00342-6
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  12. Niekamp, R., Ibrahimbegovic, A. and Matthies, H.G. (2014), "Formulation, solution and CTL software for coupled thermomechanics systems", Coupled Syst. Mech., 3(1), 1-25. https://doi.org/10.12989/csm.2014.3.1.001
  13. Park, K.C., Felippa, C.A. and Rebel, G. (2002), "A simple algorithm for localized construction of nonmatching structural interfaces", Int. J. Numer. Meth. Eng., 53(9), 2117-2142. https://doi.org/10.1002/nme.374
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