纤维金属矩阵复合材料 (MMCs) 的同质化中的概率相对
1Research Head of Civil Engineering, Geodesy & Transportation, Department of Structural Mechanics, Lodz University of Technology, 93-590 Lodz, Poland.
Materials (Basel, Switzerland)
|September 28, 2023
概括
本研究分析了使用有限元素方法 (FEM) 模拟的金属矩阵复合材料 (MMC) 同质化中的不确定性传播. 结果量化了不确定性对有效材料属性的影响,有助于可靠性评估.
科学领域:
- 材料科学 材料科学 材料科学
- 计算力学 计算力学 计算力学
- 机械工程 机械工程
背景情况:
- 纤维金属矩阵复合材料 (MMC) 的同质化需要精确的不确定性分析.
- 了解不确定性传播对于可靠的材料性质预测至关重要.
研究的目的:
- 为了进行纤维性MMCs的同质化不确定性传播分析.
- 评估不确定性对有效材料张力元件的影响.
主要方法:
- 在ABAQUS.US中使用有限元法 (FEM) 平面应变分析.
- 采用响应函数方法进行概率分析.
- 在MAPLE中使用符号代数来推导不确定性测量 (预期值,标准偏差,相对值).
主要成果:
- 量化不确定性传播影响到MMC的有效物质张力器组件.
- 用于不确定性测量的衍生符号表达式.
- 对比了各种模型,包括库尔巴克-莱布勒测量.
结论:
- 开发的方法有效量化了MMC同质化的不确定性.
- 这些发现支持通过测量极端反应与允许值之间的距离来评估可靠性.
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