在混凝土中裂传播的周动力学分析,考虑随机聚合物分布
Bin Geng1, Ze Li2, Yigong Zhao1
1Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming, 650500, Yunnan, China.
Scientific reports
|February 5, 2025
概括
这项研究引入了一种新的方法,使用周动力学 (PD) 理论来分析混凝土裂传播,考虑随机聚合物分布. 边界损伤比率 (BDR) 量化了对断裂行为的总体影响.
科学领域:
- 土木工程 土木工程是指土木工程.
- 材料科学 材料科学 材料科学
- 计算力学 计算力学 计算力学
背景情况:
- 混凝土的断裂行为是由聚合物质和分布来决定的.
- 传统的裂传播研究往往忽略了总分布的不确定性.
- 周动力学 (PD) 理论为模拟异质材料提供了一个框架.
研究的目的:
- 为了研究随机聚合物分布对混凝土裂传播的影响,使用周动力学 (PD).
- 引入和验证边界损伤比率 (BDR) 作为对骨折的总体影响的量化衡量标准.
- 建立在不确定的聚合条件下分析混凝土裂纹传播的新方法.
主要方法:
- 使用周动力学 (PD) 理论来建模混凝土.
- 结合随机分布函数来表示总体几何和位置.
- 使用随机分布的聚合物模拟裂传播.
- 建议和计算边界损害比率 (BDR).
主要成果:
- 聚合物的尺寸和位置在很大程度上决定了混凝土裂传播路径.
- 边界损坏比率 (BDR) 有效地表明混凝土分级质量和总体指导效应.
- 聚合物大小和BDR表现出韦布尔分布,较大的聚合物与较小的形状参数相关.
结论:
- 随机聚合物分布是混凝土断裂力学中的一个关键因素.
- 该BDR提供了一种新的定量工具,用于评估对裂纹传播的总体影响.
- 这种基于PD的方法提供了更现实的模拟混凝土故障机制.
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