简单的hypo-sand:一个简单的hypoplastic模型用于颗粒材料和SPH实施
Shun Wang1,2, Hong-Jie Fang1,2, Xuan Kang3
1State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan, China.
Acta geotechnica
|July 26, 2024
概括
一个新的低塑性模型使用7个参数来模拟颗粒物质的行为. 这种模型准确地捕捉了各种低和高应变率场景中的土壤力学.
科学领域:
- 地质技术工程 地质技术工程
- 计算力学 计算力学 计算力学
- 材料科学 是一种材料科学.
背景情况:
- 精确的颗粒材料建模对于地质工程应用至关重要.
- 现有的模型往往需要许多参数或与复杂的行为作斗争.
- 需要有效且强大的土壤力学构成模型.
研究的目的:
- 介绍一种用于颗粒材料的新型低塑性模型.
- 开发一个计算效率高的数值实现.
- 在各种负载条件下验证模型的预测能力.
主要方法:
- 用7个材料参数制定一个简单的低塑性构成模型.
- 使用显式集成和应力校正算法进行数值实现.
- 在光滑粒子水力学 (SPH) 框架内应用.
主要成果:
- 该模型成功地捕获了颗粒状材料的关键机械行为.
- 模拟显示了三轴和简单剪切测试在低张力率的准确预测.
- 该模型有效地复制复杂的现象,如颗粒崩,刚性透和高应变率的山体滑坡.
结论:
- 拟议的低可塑性模型为模拟土壤行为提供了一个节但强大的工具.
- 数字方法确保了计算效率和稳定性.
- 这个模型为地质技术分析和设计提供了宝贵的进步.
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