Modeling of the Burrowing Mechanism by Razor Clam: Role of Penetration Kinematics
Modeling of the Burrowing Mechanism by Razor Clam: Role of Penetration Kinematics
复制标题
蛏子的穴居机制建模：穿透运动学的作用
DOI：
10.1061/9780784481585.053
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Tao, Junliang
中科院分区：
文献类型：
--
作者：
Huang, Sichuan;Tao, Junliang
据报道，大西洋蛏子由于其进化良好的动态穿透运动学而能够以极高的效率打洞。一般来说，周期性侵彻过程本质上是一个涉及变形侵彻体与土壤颗粒之间动态相互作用的问题。本文采用三维离散元法(DEM)建模方法对车身膨胀产生的影响区域进行了初步研究。真实的侵彻体被简化为二体结构：圆锥脚和半径随时间变化的圆柱体。为了以数学方式可视化不同膨胀条件下的影响区域，研究了样品上平均法向接触力和颗粒位移的分布。结果表明，膨胀比和膨胀率对影响区域有显着影响。此外，通过使用低膨胀比和膨胀系数可以实现低横向阻力和大影响区域。
It has been reported that the Atlantic razor clam can burrow with an extremely high efficiency due to its well-evolved dynamic penetration kinematics. In general, the periodic penetration process is essentially an issue involving dynamic interaction between a shape-changing penetrator and the soil particles. In this paper, the three-dimensional discrete element method (DEM) modeling method was used to preliminarily study the influence zone created by body expansion. The real penetrator was simplified as a two-body structure: a conical foot and a cylindrical body with a time-varying radius. To mathematically visualize the influence zone at different expansion conditions, distributions of average normal contact force and particle displacement across the sample are investigated. Results show that the expansion ratio and expanding rate have significant impact on the influence zone. Furthermore, a low lateral resisting force and large influence zone can be achieved by using a low expansion ratio and expansion coefficient.
受蛏子启发，在干燥的土壤中挖洞
影响因子：
3.2
作者：
Monica Isava;A. Winter
通讯作者：
A. Winter