Vol. 16 No. 2 (2017): UIS Engineering Journal
Articles

A hierarchical h-adaptivity methodology based on element subdivision

Juan José Ródenas
Universitat Politècnica de València
Bio
José Albelda
Universitat Politècnica de València
Manuel TUR
Universitat Politècnica de València
Francisco Fuenmayor
Universitat Politècnica de València

Published 2017-05-15

Keywords

  • Adaptive Modelling,
  • hierarchical properties,
  • mesh enrichment,
  • mesh generation

How to Cite

Ródenas, J. J., Albelda, J., TUR, M., & Fuenmayor, F. (2017). A hierarchical h-adaptivity methodology based on element subdivision. Revista UIS Ingenierías, 16(2), 263–280. https://doi.org/10.18273/revuin.v16n2-2017024

Abstract

This paper presents a hierarchical h adaptive methodology for Finite Element Analysis based on the hierarchical relations between parent and child elements that come out if these elements are geometrically similar. Under this similarity condition the terms involved in the evaluation of element stiffness matrices of parent and child elements are related by a constant which is a function of the element sizes ratio (scaling factor). These relations have been the basis for the development of a hierarchical h adaptivity methodology based on element subdivision and the use of multi-point-constraints to ensure C0 continuity. The use of a hierarchical data structure significantly reduces the amount of calculations required for the mesh refinement, the evaluation of the global stiffness matrix, element stresses and element error estimation. The data structure also produces a natural reordering of the global stiffness matrix that improves the behaviour of the Cholesky factorization.

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