任意多边形骨料混凝土细观模型的建立与数值模拟

摘要/Abstract

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多维度评价

doi:10.6040/j.issn.1672-3961.0.2023.306

摘要： 基于Python-ABAQUS二次开发平台,设计了建立任意多边形混凝土细观结构模型的算法,实现骨料分布、粒径、边数、凹凸性、直曲性的全随机生成;利用布尔运算,实现骨料界面过渡区的快速生成,提出一种适用于任何基体区域形状和骨料形态的算法,可以快速完成骨料投放过程中骨料与基体的位置关系判断以及骨料与骨料之间的侵入判断。在所建模型的基础上,采用CDP(concrete damaged plasticity)模型,研究混凝土静态下的应力-应变关系与细观破坏特征,进一步验证该模型在数值模拟混凝土力学性能方面的可靠性,对于分析不同荷载作用下混凝土的失效机理具有重要意义。

关键词: 多边形骨料, 细观随机模型, 布尔运算, CDP模型, 数值模拟

中图分类号:

TU528

义扬,肖映雄,余科. 任意多边形骨料混凝土细观模型的建立与数值模拟[J]. 山东大学学报 (工学版), 2025, 55(1): 97-107.

YI Yang, XIAO Yingxiong, YU Ke. Establishment and numerical simulation of mesoscopic models of concrete with arbitrary polygonal aggregates[J]. Journal of Shandong University(Engineering Science), 2025, 55(1): 97-107.

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