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In this paper a novel solid macro-element, conceived within the DMEM is introduced. The solid macro-element has the shape of an irregular hexahedron characterized by a shear deformability, defined according to a generalized strain tensor, while the other deformation parameters are lumped in zero-thickness nonlinear continuous interfaces. For the mechanical characterizations of the continuous interfaces a fiber calibration strategy is adopted, whose integration can follow any Gauss integration quadrature. The Poisson effect, not considered in the previously introduced discrete macro-elements, can now be considered according to a further generalized strain field associated to three additional degrees freedom. Some validation examples, limited to simple benchmark curved-geometry prototypes, are presented and discussed.

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A Novel Solid Element to Enrich the Discrete Macro Element Method (DMEM)

  • 会议论文

  • 发表日期：

    2026年

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  • Marcello Falco,
  • Ivo Caliò,
  • Davide Rapicavoli,
  • Francesco Cannizzaro,
  • Salvatore Caddemi

摘要

In this paper a novel solid macro-element, conceived within the DMEM is introduced. The solid macro-element has the shape of an irregular hexahedron characterized by a shear deformability, defined according to a generalized strain tensor, while the other deformation parameters are lumped in zero-thickness nonlinear continuous interfaces. For the mechanical characterizations of the continuous interfaces a fiber calibration strategy is adopted, whose integration can follow any Gauss integration quadrature. The Poisson effect, not considered in the previously introduced discrete macro-elements, can now be considered according to a further generalized strain field associated to three additional degrees freedom. Some validation examples, limited to simple benchmark curved-geometry prototypes, are presented and discussed.