在厚壁圆柱体周围的应力分布,由岩石构成模型提出
1Shanxi Coal Transportation and Marketing Group Dongda Energy Co., Ltd., Shanxi, China.
PloS one
|August 15, 2024
概括
一个新的构成模型使用四个参数和三个方程模拟了岩石应力-应变曲线. 该模型通过分析厚壁圆柱体中的应力分布来帮助岩石工程设计.
科学领域:
- 地质技术工程 地质技术工程
- 岩石机械学 岩石机械学
- 材料科学 材料科学 材料科学
背景情况:
- 岩石工程结构需要精确模拟静态负载下的非线性应力-应变行为.
- 现有的模型可能缺乏效率或需要许多参数来准确模拟.
研究的目的:
- 提出一种新的构成模型来模拟岩石的非线性应力-应变曲线.
- 使用拟议的模型,分析围绕厚壁圆柱体的应力分布.
- 调查模型参数对应力分布的影响.
主要方法:
- 基于弹性模量 (E) 随着纵向裂增长而减少的构成方程.
- 该模型使用三个方程和四个参数 (A,k0,C,e).
- 应用了构成方程来分析厚壁圆柱体中的应力分布.
主要成果:
- 参数A影响塑性区域范围和最大触角应力.
- 参数C主要影响最大触角应力的大小.
- 参数 εs 影响塑性区域范围和最大触角应力,而 k0 影响最大触角应力大小.
- 结果与布雷模型有相似之处,但由于不同的应力-应变曲线形状,在道周围的应力分布上有所不同.
结论:
- 拟议的构成模型为模拟岩石应力-应变曲线提供了一种有效的方法.
- 该模型提供了关于岩石工程应用中的应力分布的见解.
- 该研究强调了参数选择对于精确应力分析的重要性.
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