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使用统计损害理论的泡轻质混凝土的构成性损害模型
Zhong Zhou1, Yidi Zheng1, Guiqiu Xie2
1School of Civil Engineering, Central South University, Changsha 410075, China.
Materials (Basel, Switzerland)
|September 9, 2023
概括
这项研究引入了一种新的泡轻质混凝土的统计损伤模型,这对于理解土木工程应用中的内部孔隙损伤至关重要. 该模型准确地预测了压力下的材料行为,有助于结构设计.
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
- 机械工程 机械工程
背景情况:
- 泡轻质混凝土为土木工程提供了出色的性能.
- 有限的研究存在于这种材料的内部孔隙损伤.
- 了解毛孔损伤对于准确的机械分析至关重要.
研究的目的:
- 建立泡轻质混凝土的统计损害构成模型.
- 为了解释骨折损伤和孔内强度的不均分布.
- 为分析微观机械行为和结构设计提供一种工具.
主要方法:
- 基于统计损害理论和韦布尔函数开发了一个损害构成模型.
- 通过三轴压缩试验确定模型参数.
- 根据现有的实验数据验证了模型的合理性.
主要成果:
- 拟议模型的理论计算与实验结果一致.
- 该模型准确地反映了峰值应力和应变值.
- 它有效地描述了整体压力-应变发展规律.
- 在0.3 MPa限制压力和700 kg·m−3密度下达到最佳适应.
结论:
- 统计损害构成模型非常适用于泡轻质混凝土.
- 该模型对于微观机械分析具有意义.
- 它为土木工程中的结构设计提供了宝贵的见解.
- 这项研究解决了在内部毛孔损伤下了解材料行为的关键差距.
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