人类分析-一个基于DEM的数值方法
Rajat Mishra1, Sagar Kumar Deb1, Swasti Chakrabarty2
1Advanced Materials Processing Research Group, Indian Institute of Technology Gandhinagar, Palaj, Gujarat, India.
概括
这项研究使用离散元素建模来模拟人类的,分析粒子形状和特性如何影响食物分解. 计算方法为了解这个复杂的消化过程提供了有效的实验替代方案.
科学领域:
- 生物力学 生物力学
- 计算机建模 计算建模
- 食品科学 食品科学 食品科学
背景情况:
- 是消化过程的关键初始阶段,涉及食物碎片化和混合.
- 由于许多参数,对口的实验分析是复杂和低效的.
- 像离散元素数值建模这样的计算技术提供了高效的解决方案.
研究的目的:
- 使用数值建模模拟人类的过程.
- 分析食过程中食物颗粒的碎片化和分布.
- 为了研究粒子特征对结果的影响.
主要方法:
- 采用离散元件方法 (DEM) 进行数值模拟.
- 使用了Tavares和Ab-T10破裂模型与Gaudin Schumann和不完整的Beta碎片分布模型.
- 整合了数值软化因子和粘附力,以建模弹性-塑料行为和水分含量.
主要成果:
- 分析了粒子形状 (球形,多面体,面圆柱体),尺寸 (面积比) 和方向 (垂直,水平) 对断裂和碎片分布的影响.
- 通过多个参数证明了DEM在模拟口方面的有效性.
- 量化了材料特性 (如弹性-塑性行为和水分含量) 对食物颗粒碎片化的影响.
结论:
- 离散元件方法 (DEM) 提供了一个强大的工具来模拟和分析人类的过程.
- 颗粒的特性显著影响时的食物碎片化和分布.
- 数字建模推进了我们对消化过程中的生物机械过程的理解.
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