Sudhanva Kusuma Chandrashekhara (Author), Dejan Zupan (Author)

Abstract

In this paper, we propose a novel computational formulation capable of solving the problem of material softening and the emerging localisation of strains in spatial frame-like structure, a common phenomenon for brittle heterogeneous materials. This study adopts the embedded strong discontinuity approach within our original velocity-based framework. The velocity-based formulation is thus enhanced with additional capabilities of detection of critical load level and critical cross-section and introduction of the jump-like variables at the level of velocities and angular velocities to enable more realistic description of strain localisation. A modified consistency condition is derived using the method of weighted residuals in complete accordance with the theoretical concept of strong discontinuity. One of the key advantages of the proposed method is its computational efficiency, which is preserved even after detecting cross-sectional singularities and handling post-critical localised strains. The numerical examples show the effectiveness and robustness of the proposed approach.

Keywords

gradbeništvo;vključene nezveznosti;mehčanje materiala;prostorske rotacije;post-kritična analiza;lokalizacija deformacij;civil engineering;embedded discontinuity;material softening;three-dimensional rotations;post-critical analysis;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FGG - Faculty of Civil and Geodetic Engineering
UDC: 624.04:624.072
COBISS: 200643843 Link will open in a new window
ISSN: 0045-7949
Views: 98
Downloads: 18
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Other data

Secondary language: Slovenian
Secondary keywords: gradbeništvo;vključene nezveznosti;mehčanje materiala;prostorske rotacije;postkritična analiza;lokalizacija deformacij;
Type (COBISS): Article
Pages: str. 1-16
Issue: ǂVol. ǂ301, art. 107464
Chronology: sept. 2024
DOI: 10.1016/j.compstruc.2024.107464
ID: 24518451