Koocheki K, Pietruszczak S
McMaster University, Hamilton, ON, Canada.
Math Mech Solids. 2025 Jan;30(1):73-92. doi: 10.1177/10812865231199067. Epub 2023 Oct 14.
This paper deals with mesoscale analysis of masonry structures, which involves fracture propagation in brick units as well as along the masonry joints. The brick-mortar interfaces are incorporated in standard finite elements by employing a constitutive law with embedded discontinuity. Macrocracks in bricks are modelled in a discrete way using the same methodology, without any a-priori assumptions regarding their orientation. The proposed approach is computationally efficient as it does not explicitly require the discretization of joints. The accuracy of the approximation is first assessed by comparing the solution with a detailed mesoscale model incorporating interface elements. Later, a numerical study is conducted involving simulation of various experimental tests on small masonry assemblages, as well as single-leaf masonry walls, with running bond pattern, subjected to in-plane loading. The results clearly demonstrate the predictive abilities of the proposed simplified approach.
本文探讨砌体结构的细观分析，其中涉及砖单元内部以及砌体接缝处的裂缝扩展。通过采用具有嵌入式不连续性的本构定律，将砖 - 砂浆界面纳入标准有限元中。使用相同的方法以离散方式对砖中的宏观裂缝进行建模，无需对其方向做任何先验假设。所提出的方法计算效率高，因为它不需要对接缝进行显式离散化。首先通过将该解决方案与包含界面单元的详细细观模型进行比较来评估近似精度。随后，进行了一项数值研究，涉及对具有顺砖砌筑方式的小型砌体组合以及单叶砌体墙进行面内加载的各种实验测试的模拟。结果清楚地证明了所提出的简化方法的预测能力。
