基于响应表面方法,优化化混凝土界面过渡区的凝聚性参数
Kai Min1, Xianfeng Pei1, Houmin Li1
1School of Engineering, Architecture and the Environment, Hubei University of Technology, Wuhan 430068, China.
Polymers
|June 19, 2024
概括
这项研究优化了-砂界面过渡区 (ITZ) 的凝聚性参数,用于混凝土疲劳分析. 优化的参数提高了模拟准确性,将结果与耐疲劳结构的实验数据保持一致.
科学领域:
- 材料科学 材料科学 材料科学
- 土木工程 土木工程是指土木工程.
- 计算力学 计算力学 计算力学
背景情况:
- 混凝土具有良好的耐久性,适用于耐疲劳结构.
- 接口过渡区 (ITZ) 对混凝土的机械性能和耐用性至关重要.
- 准确的模拟参数,砂ITZ是具有挑战性的,以实验的方式确定.
研究的目的:
- 调查砂ITZ中的凝聚性参数对混凝土在中视尺度上的疲劳行为的影响.
- 建立一种可靠的方法来确定和优化这些关键的模拟参数.
主要方法:
- 为混凝土开发一个五阶段的连贯模型.
- 应用单元分析和普拉克特-伯曼试验来确定关键的凝聚性参数.
- 使用响应表面方法优化砂ITZ凝聚性参数.
主要成果:
- 确定凝聚性参数对混凝土疲劳的主要和次要影响.
- 优化的凝聚性参数显著提高了数值模拟的准确性.
- 模拟结果与优化参数密切匹配的实验数据.
结论:
- 砂ITZ的优化凝聚性模型参数准确地代表了混凝土的疲劳行为.
- 该方法对于确定复杂材料接口的模拟参数是有效的.
- 这些发现适用于不同含量的混凝土.
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