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Proposal of Empirical Homogenization of Masonry Wall Made of AAC Masonry Units
| Content Provider | Scilit |
|---|---|
| Author | Jasiński, Radosław Grzyb, Krzysztof |
| Copyright Year | 2020 |
| Description | Journal: Iop Conference Series: Materials Science and Engineering The article presents an own validation procedure of numerical FEM model of masonry wall made of autoclaved aerated concrete (AAC) masonry units. Empirical calibration of masonry’s mechanical parameters was carried out in the standard tests of the compressed and diagonally compressed wall. In the numerical calculations, an elastic-plastic material model with degradation was used. This model in the compression phase uses the Menetrey-William (M-W-3) plasticity surface and in a tensioning state, the Rankine criterion is used. In the first stage, axially compressed walls were analysed. Fracture energy was changed, leaving the remaining parameters unchanged. The relation between the load – vertical and horizontal strains was compared. In the second stage, the calibration involved changing the tensile strength of the wall in diagonally compression test. The relationship between shear stresses and form strain angle was compared. Satisfactory convergence in the range of maximum stresses and significant differences in terms of form strains were obtained. In the third stage, the modulus of elasticity was calibrated, the results of laboratory tests and numerical calculations were compared. The best convergence in terms of maximum tangential stress and scratch morphology was obtained in the model in which the tensile strength was reduced by 80%. The reliability of the proposed validation method was additionally verified on wall models of larger dimensions. The article is a continuation of the author’s considerations regarding the author’s validation method of the FEM masonry model. |
| Related Links | https://iopscience.iop.org/article/10.1088/1757-899X/960/2/022084/pdf |
| ISSN | 17578981 |
| e-ISSN | 1757899X |
| DOI | 10.1088/1757-899x/960/2/022084 |
| Journal | Iop Conference Series: Materials Science and Engineering |
| Issue Number | 2 |
| Volume Number | 960 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 2020-12-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: Iop Conference Series: Materials Science and Engineering Characterization and Testing of Materials Diagonally Compression |
| Content Type | Text |
| Resource Type | Article |
